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Sample records for alec christie julian

  1. Sir Alec Clegg

    ERIC Educational Resources Information Center

    Brighouse, Tim

    2008-01-01

    This article is a personal view of the career of Sir Alec Clegg. It outlines some of Clegg's achievements in the West Riding, and why he was so influential on those that he worked with. Finally, it retells one of Alec Clegg's favourite stories "The fable of Fred".

  2. President of Council-Sir Alec

    ScienceCinema

    None

    2016-07-12

    En décembre 1983 le président de l'Association du Personnel du Cern a suggéré d'inviter le président du conseil à une réunion du personnel dans le but d'améliorer la communication entre le conseil et le personnel. Le DG H.schopper remercie le président du conseil, Sir Alec, d'avoir accepté l'invitation malgré ses nombreux occupations.

  3. Corpus Christi, Texas

    NASA Technical Reports Server (NTRS)

    1992-01-01

    This near vertical view of the south Texas coast shows the city of Corpus Christi (28.0N, 97.0W) and Corpus Christi Bay. Mustang Island and the Gulf of Mexico are seen in the Southeast corner of the view. The Nueces River flows into the bay from the west. The light toned squiggly lines in Corpus Christi Bay are mud trails caused by shrimp boats dragging their nets along the shallow bottom of the bay.

  4. 130. Julian Price Memorial Park. Fortyseven acre Julian Price Lake ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    130. Julian Price Memorial Park. Forty-seven acre Julian Price Lake created by an impoundment. Looking west. - Blue Ridge Parkway, Between Shenandoah National Park & Great Smoky Mountains, Asheville, Buncombe County, NC

  5. The man behind the DNA fingerprints: an interview with Professor Sir Alec Jeffreys

    PubMed Central

    2013-01-01

    In this interview we talk with Professor Sir Alec Jeffreys about DNA fingerprinting, his wider scientific career, and the past, present and future of forensic DNA applications. The podcast with excerpts from this interview is available at: http://www.biomedcentral.com/biome/alec-jeffreys. PMID:24245655

  6. H. Julian Allen

    NASA Technical Reports Server (NTRS)

    1957-01-01

    H. Julian Allen stands beside the observation window of the 8 x 7 foot test section of the NACA Ames Unitary Plan Wind Tunnel. H. Julian Allen is best known for his 'Blunt Body Theory' of aerodynamics, a design technique for alleviating the severe re-entry heating problem which was then delaying the development of ballistic missiles. His findings revolutionized the fundamental design of ballistic missle re-entry shapes. Subsequently, applied research led to applications of the 'blunt' shape to ballistic missles and spacecraft which were intended to re-enter the Earth's atmosphere. This application led to the design of ablative heat shields that protected the Mercury, Gemini and Apollo astronauts as their space capsules re- entered the Earth's atmosphere. 'Harvey' Allen as he was called by most, was not only a brilliant scientist and aeronautical engineer but was also admired for his kindness, thoughtfulness and sense of humor. Among his many other accomplishments, Harvey Allen served as Center Director of the NASA Ames Research Center from 1965 to 1969. He died of a heart attack on January 29, 1977 at the age of 66.

  7. Tribute to Julian Schwinger

    NASA Astrophysics Data System (ADS)

    Kohn, Walter

    It is a melancholy privilege for me to take part in this symposium in honor of my venerated teacher, Julian Schwinger. All of us here know that his brilliant scientific insights and methodologies have l deep imprints across the entire spectrum of theoretical physics, both pure and applied. No doubt his most outstanding work was his monumental relativistically covariant renormalization theory of quantum electrodynamics; other areas which he substantially reshaped include quantum gauge theories, whose significance he was one of the first to realize; nuclear physics — beginning with his first papers written as a teenager and in which he offered perhaps the first comprehensive lecture course; the theory of waveguides, a powerful reformulation during World War II in terms of tensor Green's functions and variational principles; scattering theory; particle accelerators; and, very broadly, the structure of elementary particle theory…

  8. 77 FR 2448 - Special Local Regulation; HITS Triathlon; Corpus Christi Bayfront, Corpus Christi, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-18

    ... SECURITY Coast Guard 33 CFR Part 100 RIN 1625-AA08 Special Local Regulation; HITS Triathlon; Corpus Christi Bayfront, Corpus Christi, TX AGENCY: Coast Guard, DHS. ACTION: Temporary Final rule. SUMMARY: The Coast Guard is establishing a temporary Special Local Regulation in the Corpus Christi Bayfront area...

  9. Julian Schwinger — Personal Recollections

    NASA Astrophysics Data System (ADS)

    Martin, Paul C.

    We're gathered here today to salute Julian Schwinger, a towering figure of the golden age of physics — and a kind and gentle human being. Even at our best universities, people with Julian's talent and his passion for discovery and perfection are rare — so rare that neither they nor the rest of us know how to take best advantage of their genius. The failure to find a happier solution to this dilemma in recent years has concerned many of us. It should not becloud the fact that over their lifetimes, few physicists, if any, have surmounted this impedance mismatch more effectively than Julian, conveying not only knowledge but lofty values and aspirations directly and indirectly to thousands of physicists…

  10. 33 CFR 110.75 - Corpus Christi Bay, Tex.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Corpus Christi Bay, Tex. 110.75... ANCHORAGE REGULATIONS Special Anchorage Areas § 110.75 Corpus Christi Bay, Tex. (a) South area. Southward of... said breakwater; and eastward of the Corpus Christi sea wall....

  11. How Has the Environment Influenced Christy's Growth?

    ERIC Educational Resources Information Center

    Roberts, Blair E.

    Defining environment as both the physical space and the people who are in it, this paper explored the effects of environment on a first-grade child. Urie Bronfenbrenner's theories on the effects of physical environment on children provided a conceptual foundation during the observation of Christy, a student at Lawrence School in Brookline,…

  12. Developing Readers: Lessons from Agatha Christie.

    ERIC Educational Resources Information Center

    Mackey, Margaret

    1991-01-01

    Reminds readers that looking at individual authors rather than dealing in generalizations is a very meaningful approach to increasing an understanding of how reading works by making sense of the text. Discusses how Agatha Christie's writing follows very predictable patterns and may provide useful experiences for novice readers. (MG)

  13. Moral Mondays and the Defense of Public Education: The Fusion Movement against ALEC-Influenced Legislation in North Carolina

    ERIC Educational Resources Information Center

    Marshall, Catherine; Tichnor-Wagner, Ariel; Johnson, Mark

    2017-01-01

    A barrage of pro-privatization policies that cascaded into North Carolina education statutes during the 2013-2014 legislative session helped spark a series of organized protests known as the Moral Monday Movement. Powerful and strategic policy networks, such as the American Legislative Exchange Council (ALEC), have made privatization and…

  14. 33 CFR 165.808 - Corpus Christi Ship Channel, Corpus Christi, TX, safety zone.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... departures of loaded LPG vessels via a Marine Safety Information Broadcast Notice to Mariners. ... established as safety zones during specified conditions: (1) For incoming tank vessels loaded with Liquefied... Christi Ship Channel to the LPG receiving facility. The safety zone remains in effect until the LPG...

  15. 33 CFR 165.808 - Corpus Christi Ship Channel, Corpus Christi, TX, safety zone.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... departures of loaded LPG vessels via a Marine Safety Information Broadcast Notice to Mariners. ... established as safety zones during specified conditions: (1) For incoming tank vessels loaded with Liquefied... Christi Ship Channel to the LPG receiving facility. The safety zone remains in effect until the LPG...

  16. 33 CFR 165.808 - Corpus Christi Ship Channel, Corpus Christi, TX, safety zone.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... departures of loaded LPG vessels via a Marine Safety Information Broadcast Notice to Mariners. ... established as safety zones during specified conditions: (1) For incoming tank vessels loaded with Liquefied... Christi Ship Channel to the LPG receiving facility. The safety zone remains in effect until the LPG...

  17. 77 FR 34034 - Corpus Christi Liquefaction, LLC; Cheniere Corpus Christi Pipeline, L.P.; Notice of Intent To...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-08

    ....; Notice of Intent To Prepare an Environmental Assessment for the Planned Corpus Christi LNG Terminal and... assessment (EA) that will discuss the environmental impacts of the planned Corpus Christi LNG Terminal and... (LNG) export and import terminal, and a natural gas transmission pipeline in Nueces and San...

  18. ARM Madden-Julian Oscillation Investigation Experiment

    SciTech Connect

    Long, Chuck

    2014-03-29

    Results of the ARM Madden-Julian Oscillation (MJO) Investigation Experiment (AMIE) field campaign are contributing significantly to concurrent national and international research efforts addressing questions about how the MJO initiates and changes as it passes phenomenon differs in observations versus models.

  19. ARM Madden-Julian Oscillation Investigation Experiment

    ScienceCinema

    Long, Chuck

    2016-07-12

    Results of the ARM Madden-Julian Oscillation (MJO) Investigation Experiment (AMIE) field campaign are contributing significantly to concurrent national and international research efforts addressing questions about how the MJO initiates and changes as it passes phenomenon differs in observations versus models.

  20. The Making of Two Readers: Agatha Christie and Jack London.

    ERIC Educational Resources Information Center

    Baghban, Marcia

    1990-01-01

    Looks at the lives of two well-known writers to explore how diverse experiences produce literate adults. Discusses Agatha Christie and Jack London who used reading and writing to earn a living and to gain international reputations. (MG)

  1. RadNet Air Data From Corpus Christi, TX

    EPA Pesticide Factsheets

    This page presents radiation air monitoring and air filter analysis data for Corpus Christi, TX from EPA's RadNet system. RadNet is a nationwide network of monitoring stations that measure radiation in air, drinking water and precipitation.

  2. Initiation of the Madden-Julian Oscillation

    ScienceCinema

    None

    2016-07-12

    Many storms around the world have roots in the Indian Ocean, where they are churned up by the atmospheric process called the Madden-Julian Oscillation (MJO). PNNL is working to unlock the secrets of the MJO, particularly how it initiates in the Indian Ocean every 30-60 days. Better prediction of the MJO will help resource managers, weather forecasters and people worldwide better prepare for its effects.

  3. Initiation of the Madden-Julian Oscillation

    SciTech Connect

    2015-12-14

    Many storms around the world have roots in the Indian Ocean, where they are churned up by the atmospheric process called the Madden-Julian Oscillation (MJO). PNNL is working to unlock the secrets of the MJO, particularly how it initiates in the Indian Ocean every 30-60 days. Better prediction of the MJO will help resource managers, weather forecasters and people worldwide better prepare for its effects.

  4. Madden-Julian Variability in Coupled Models

    SciTech Connect

    Sperber, K R; Gualdi, S; Li, W; Slingo, J M

    2001-12-12

    The Madden-Julian Oscillation (MJO) is a dominant mode of tropical variability (Madden and Julian 1971, 1972). It is manifested on a timescale of {approx}30-70 days through large-scale circulation anomalies which occur in conjunction with eastward propagating convective anomalies over the eastern hemisphere. Recent evidence has suggested that an interactive ocean may be important for the simulation of the Madden-Julian Oscillation (Flatau et al. 1997, Sperber et al. 1997, Waliser et al. 1999, Inness et al. 2002). As part of an initiative to the CLIVAR Working Group on Coupled Modeling, we examine ocean-atmosphere GCMs to ascertain the degree to which they can represent the 4-dimensional space-time structure of the MJO. The eastward propagation of convection is also examined with respect to the surface fluxes and SST, and we compare and contrast the behavior over the Indian Ocean and the western Pacific. Importantly, the results are interpreted with respect to systematic error of the mean state.

  5. Percy Julian, Robert Robinson, and the Identity of Eserethole

    ERIC Educational Resources Information Center

    Ault, Addison

    2008-01-01

    The Nova production "Percy Julian--Forgotten Genius" included the very public disagreement between Percy Julian, an unknown American chemist, and Robert Robinson, possibly the best known organic chemist of the day, as to the identity of "eserethole", the key intermediate for the synthesis of the alkaloid physostigmine. The Nova production,…

  6. 76 FR 31821 - Amendment of Class D Airspace; Corpus Christi, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-02

    ... Federal Aviation Administration 14 CFR Part 71 Amendment of Class D Airspace; Corpus Christi, TX AGENCY... amends Class D airspace within the Corpus Christi, TX, area by updating the geographic coordinates for... the geographic coordinates, within Class D airspace, of the Cabaniss NOLF, Corpus Christi, TX,...

  7. 76 FR 49285 - Amendment of Class D Airspace; Corpus Christi, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-10

    ... Federal Aviation Administration 14 CFR Part 71 Amendment of Class D Airspace; Corpus Christi, TX AGENCY... Register June 2, 2011, ] amending Class D airspace at Cabaniss Navy Outlying Field (NOLF), Corpus Christi... Cabaniss NOLF, Corpus Christi, TX (76 FR 31821, Docket No. FAA-2010-1171). Subsequent to publication,...

  8. 40 CFR 81.136 - Corpus Christi-Victoria Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Corpus Christi-Victoria Intrastate Air... Air Quality Control Regions § 81.136 Corpus Christi-Victoria Intrastate Air Quality Control Region. The Corpus Christi-Victoria Intrastate Air Quality Control Region (Texas) consists of the...

  9. Beginning Again: A Response to Rosen and Christie

    ERIC Educational Resources Information Center

    Doecke, Brenton; Breen, Lisa

    2013-01-01

    Genre theory has been around for a long time now. The exchange between Michael Rosen and Frances Christie recently featured in "Changing English" is the latest in a series of exchanges between advocates of genre and their critics over the past three decades or so. Our aim in this response-essay is not to weigh up the merits of the cases…

  10. 33 CFR 165.809 - Security Zones; Port of Port Lavaca-Point Comfort, Point Comfort, TX and Port of Corpus Christi...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Lavaca-Point Comfort, Point Comfort, TX and Port of Corpus Christi Inner Harbor, Corpus Christi, TX. 165... Lavaca-Point Comfort, Point Comfort, TX and Port of Corpus Christi Inner Harbor, Corpus Christi, TX. (a) Location. The following area is designated as a security zone: all waters of the Corpus Christi...

  11. VIEW OF THE INTERSECTION OF JULIAN AVE AND MONTHAN STREET. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF THE INTERSECTION OF JULIAN AVE AND MONTHAN STREET. THE WATERS OF THE PEARL HARBOR CHANNEL ARE IN THE BACKGROUND AT LEFT. VIEW FACING NORTH. - Hickam Field, Hickam Historic Housing, Honolulu, Honolulu County, HI

  12. H. Julian Allen with Blunt Body Theory

    NASA Technical Reports Server (NTRS)

    1957-01-01

    H. Julian Allen is best known for his 'Blunt Body Theory' of aerodynamics, a design technique for alleviating the severe re-entry heating problem which was then delaying the development of ballistic missiles. His findings revolutionized the fundamental design of ballistic missle re-entry shapes. Subsequently, applied research led to applications of the 'blunt' shape to ballistic missles and spacecraft which were intended to re-enter the Earth's atmosphere. This application led to the design of ablative heat shields that protected the Mercury, Gemini and Apollo astronauts as their space capsules re- entered the Earth's atmosphere. 'Harvey' Allen as he was called by most, was not only a brilliant scientist and aeronautical engineer but was also admired for his kindness, thoughtfulness and sense of humor. Among his many other accomplishments, Harvey Allen served as Center Director of the NASA Ames Research Center from 1965 to 1969. He died of a heart attack on January 29, 1977 at the age of 66.

  13. Morphologic Response to a New Inlet, Packery Channel, Corpus Christi, Texas

    DTIC Science & Technology

    2007-01-01

    terminology, Aransas Pass (shared with Aransas Bay to the north) on the north side and Corpus Christi Pass on the south side, in the SSE corner (Fig...1 and Fig. 2). Dredging of Aransas Pass started in 1912, and its re-direction into Corpus Christi Bay in 1924 caused Corpus Christi Pass to slowly...rather than the 23-mile (37 km) transit to Aransas Pass. The North Padre Island (Packery Channel), Nueces County, Texas, Storm Damage Reduction

  14. A Conversation with Robert F. Christy Part II

    NASA Astrophysics Data System (ADS)

    Lippincott, Sara

    2006-12-01

    Robert F. Christy, Institute Professor of Theoretical Physics Emeritus at Caltech, recalls his wartime work at Los Alamos on the critical assembly for the plutonium bomb (“the Christy bomb”); the Alamogordo test, July 16, 1945; the postwar concerns of ALAS (Association of Los Alamos Scientists); his brief return to the University of Chicago and move to Caltech; friendship with and later alienation from Edward Teller; work with Charles and Tommy Lauritsen and William A. Fowler in Caltech’s Kellogg Radiation Laboratory; Freeman Dyson’s Orion Project; work on the meson and RR Lyrae stars; fellowship at Cambridge University; 1950s Vista Project at Caltech; his opposition to the Strategic Defense Initiative; and his post-retirement work for the National Research Council’s Committee on Dosimetry and on inertial-confinement fusion.

  15. A Conversation with Robert F. Christy Part I

    NASA Astrophysics Data System (ADS)

    Lippincott, Sara

    2006-09-01

    Robert F. Christy, Institute Professor of Theoretical Physics Emeritus at Caltech, recalls his childhood in British Columbia; his undergraduate years at the University of British Columbia; his graduate work with J. Robert Oppenheimer at Berkeley; and his work on the Manhattan Project, first with Enrico Fermi at the Metallurgical Laboratory of the University of Chicago and then as a member of the Theoretical Division at Los Alamos.

  16. 33 CFR 334.800 - Corpus Christi Bay, Tex.; seaplane restricted area, U.S. Naval Air Station, Corpus Christi.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE DANGER ZONE AND... follows: Beginning at a point on the south shore of Corpus Christi Bay at the “North Gate” of the U.S...′41.6″ 97°15′33.3″ thence to a point on shore at latitude 27°40′44.9″ N.; thence along the shore...

  17. 33 CFR 334.800 - Corpus Christi Bay, Tex.; seaplane restricted area, U.S. Naval Air Station, Corpus Christi.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE DANGER ZONE AND... follows: Beginning at a point on the south shore of Corpus Christi Bay at the “North Gate” of the U.S...′41.6″ 97°15′33.3″ thence to a point on shore at latitude 27°40′44.9″ N.; thence along the shore...

  18. Giants of the past: Percy Lavon Julian (1899-1975) a forgotten pioneer in soy

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The common thread running through African American chemist Percy Lavon Julian's life is one about outstanding achievements in the face of great obstacles. Racial oppression forced Julian to repeatedly pick up broken fragments of chance and turn them into opportunity. Percy Julian was a luminary in...

  19. 78 FR 44523 - Reorganization of Foreign-Trade Zone 122 Under Alternative Site Framework; Corpus Christi, Texas

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-24

    ...; Corpus Christi, Texas Pursuant to its authority under the Foreign-Trade Zones Act of June 18, 1934, as... establishment or reorganization of zones; Whereas, the Port of Corpus Christi Authority, grantee of Foreign..., Kleberg and Bee Counties, Texas, within and adjacent to the Corpus Christi Customs and Border...

  20. Teaching Margery and Julian in Anthology-Based Survey Courses

    ERIC Educational Resources Information Center

    Petersen, Zina

    2006-01-01

    Recognizing that many of us teach the medieval English women mystics Margery Kempe and Julian of Norwich in survey courses, this essay attempts to put these writers in context for teachers who may have only a passing familiarity with the period. Focusing on passages of their writings found in the Longman and Norton anthologies of British…

  1. 129. Julian Price Memorial Park. Price Lake Dam. A concrete ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    129. Julian Price Memorial Park. Price Lake Dam. A concrete slab bridge crosses the top of the dam impounding a forty-seven acre lake. Looking west. - Blue Ridge Parkway, Between Shenandoah National Park & Great Smoky Mountains, Asheville, Buncombe County, NC

  2. EFFECTS OF CORPUS CHRISTI BAY SEDIMENTS ON SURVIVAL, GROWTH AND REPRODUCTION OF THE MYSID, MYSIDOPSIS BAHIA

    EPA Science Inventory

    The study described here examined effects on mortality, growth, reproduction, and behavior of Americamysis bahi exposed under extended static conditions to bedded sediments from Corpus Christi Bay.

  3. TOMORROW: EPA Recognizing Gulf Guardian Award Winners in Corpus Christi, TX

    EPA Pesticide Factsheets

    DALLAS - (July 29, 2015) The U.S. Environmental Protection Agency's (EPA) Gulf of Mexico Program will hold the 13 th annual Gulf Guardians Awards ceremony in Corpus Christi, TX, this Thursday, July 30.

  4. Evaluation of pore-water samplers at a drainage ditch, Installation Restoration Site 4, Naval Air Station Corpus Christi, Corpus Christi, Texas, 2005–06

    USGS Publications Warehouse

    Vroblesky, Don A.; Casey, Clifton C.

    2007-01-01

    The U.S. Geological Survey, in cooperation with the Naval Facilities Engineering Command Southeast, used innovative sampling methods to investigate ground-water contamination by chlorobenzenes beneath a drainage ditch on the southwestern side of Installation Restoration Site 4, Naval Air Station Corpus Christi, Corpus Christi, Texas, during 2005-06. The drainage ditch, which is a potential receptor for ground-water contaminants from Installation Restoration Site 4, intermittently discharges water to Corpus Christi Bay. This report evaluates a new type of pore-water sampler developed for this investigation to examine the subsurface contamination beneath the drainage ditch. The new type of pore-water sampler appears to be an effective approach for long-term monitoring of ground water in the sand and organic-rich mud beneath the drainage ditch.

  5. Guiding future research on the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Schultz, Colin

    2013-05-01

    Much as the recurrent variations of the El Niño-Southern Oscillation (ENSO) affect climate and drive strong interannual variability across the planet, the Madden-Julian Oscillation (MJO)—a months-long, semireliable cycle—affects everything from the Indian monsoon to Pacific hurricanes to North American snowfall. Unlike the better known ENSO, which is seen primarily as an interannual oscillation in equatorial Pacific Ocean surface ocean temperatures, MJO is characterized by a transient cycle in Indian Ocean and western Pacific atmospheric behavior—a semiregular shift in tropical convection and large-scale atmospheric circulation patterns.

  6. 76 FR 68188 - Valero Refining-Texas, L.P. v. Port of Corpus Christi Authority of Nueces County, TX; Notice of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-03

    ... of Corpus Christi Authority of Nueces County, TX; Notice of Filing of Complaint and Assignment Notice... Refining-Texas, L.P., hereinafter ``Complainant,'' against the Port of Corpus Christi Authority of...

  7. When Will It Be ...?: U.S. Naval Observatory Sidereal Time and Julian Date Calculators

    NASA Astrophysics Data System (ADS)

    Chizek Frouard, Malynda R.; Lesniak, Michael V.; Bartlett, Jennifer L.

    2017-01-01

    Sidereal time and Julian date are two values often used in observational astronomy that can be tedious to calculate. Fortunately, the U.S. Naval Observatory (USNO) has redesigned its on-line Sidereal Time and Julian Date (JD) calculators to provide data through an Application Programming Interface (API). This flexible interface returns dates and times in JavaScript Object Notation (JSON) that can be incorporated into third-party websites or applications.Via the API, Sidereal Time can be obtained for any location on Earth for any date occurring in the current, previous, or subsequent year. Up to 9999 iterations of sidereal time data with intervals from 1 second to 1095 days can be generated, as long as the data doesn’t extend past the date limits. The API provides the Gregorian calendar date and time (in UT1), Greenwich Mean Sidereal Time, Greenwich Apparent Sidereal Time, Local Mean Sidereal Time, Local Apparent Sidereal Time, and the Equation of the Equinoxes.Julian Date can be converted to calendar date, either Julian or Gregorian as appropriate, for any date between JD 0 (January 1, 4713 BCE proleptic Julian) and JD 5373484 (December 31, 9999 CE Gregorian); the reverse calendar date to Julian Date conversion is also available. The calendar date and Julian Date are returned for all API requests; the day of the week is also returned for Julian Date to calendar date conversions.On-line documentation for using all USNO API-enabled calculators, including sample calls, is available (http://aa.usno.navy.mil/data/docs/api.php).For those who prefer using traditional data input forms, Sidereal Time can still be accessed at http://aa.usno.navy.mil/data/docs/siderealtime.php, and the Julian Date Converter at http://aa.usno.navy.mil/data/docs/JulianDate.php.

  8. 76 FR 55909 - CITGO Refining and Chemicals Company L.P. v. Port of Corpus Christi Authority of Nueces County...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-09

    ... From the Federal Register Online via the Government Publishing Office FEDERAL MARITIME COMMISSION CITGO Refining and Chemicals Company L.P. v. Port of Corpus Christi Authority of Nueces County, Texas... ``Complainant,'' against the Port of Corpus Christi Authority of Nueces County, Texas (PCCA)...

  9. Hydrodynamic characterization of Corpus Christi Bay through modeling and observation.

    PubMed

    Islam, Mohammad S; Bonner, James S; Edge, Billy L; Page, Cheryl A

    2014-11-01

    Christi Bay is a relatively flat, shallow, wind-driven system with an average depth of 3-4 m and a mean tidal range of 0.3 m. It is completely mixed most of the time, and as a result, depth-averaged models have, historically, been applied for hydrodynamic characterization supporting regulatory decisions on Texas coastal management. The bay is highly stratified during transitory periods of the summer with low wind conditions. This has important implications on sediment transport, nutrient cycling, and water quality-related issues, including hypoxia which is a key water quality concern for the bay. Detailed hydrodynamic characterization of the bay during the summer months included analysis of simulation results of 2-D hydrodynamic model and high-frequency (HF) in situ observations. The HF radar system resolved surface currents, whereas an acoustic Doppler current profiler (ADCP) measured current at different depths of the water column. The developed model successfully captured water surface elevation variation at the mouth of the bay (i.e., onshore boundary of the Gulf of Mexico) and at times within the bay. However, large discrepancies exist between model-computed depth-averaged water currents and observed surface currents. These discrepancies suggested the presence of a vertical gradient in the current structure which was further substantiated by the observed bi-directional current movement within the water column. In addition, observed vertical density gradients proved that the water column was stratified. Under this condition, the bottom layer became hypoxic due to inadequate mixing with the aerated surface water. Understanding the disparities between observations and model predictions provides critical insights about hydrodynamics and physical processes controlling water quality.

  10. Statistical forecasts of the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Jones, C.; Carvalho, L.; Higgins, W.; Waliser, D.; Schemm, J.-K.

    2003-04-01

    Tropical intraseasonal convective anomalies (TICA) play a significant role in the coupled ocean-atmosphere system and the Madden-Julian Oscillation (MJO) is the primary mode of this variability. The two main aspects investigated in this study are: 1) differences in predictive skill of TICA events with different eastward propagation characteristics; 2) differences in predictive skill of TICA events occurring in different phases of El Niño/Southern Oscillation (ENSO). Twenty two years of outgoing longwave radiation (OLR) is used to identify eastward propagating convective anomalies. A statistical forecast model based on lagged linear regression of the first two principal components from a combined empirical orthogonal function (EOF) analysis of intraseasonally filtered OLR, zonal wind components at 200 hPa and 850 hPa anomalies is developed. The forecast model shows useful skill out to about 25 days when validated against filtered anomalies. The presentation will also discuss the statistical forecast skill in real-time.

  11. Investigation of ground-water contamination at a drainage ditch, Installation Restoration Site 4, Naval Air Station Corpus Christi, Corpus Christi, Texas, 2005–06

    USGS Publications Warehouse

    Vroblesky, Don A.; Casey, Clifton C.

    2007-01-01

    The U.S. Geological Survey, in cooperation with the Naval Facilities Engineering Command Southeast, used newly developed sampling methods to investigate ground-water contamination by chlorobenzenes beneath a drainage ditch on the southwestern side of Installation Restoration Site 4, Naval Air Station Corpus Christi, Corpus Christi, Texas, during 2005-06. The drainage ditch, which is a potential receptor for ground-water contaminants from Installation Restoration Site 4, intermittently discharges water to Corpus Christi Bay. This report uses data from a new type of pore-water sampler developed for this investigation and other methods to examine the subsurface contamination beneath the drainage ditch. Analysis of ground water from the samplers indicated that chlorobenzenes (maximum detected concentration of 160 micrograms per liter) are present in the ground water beneath the ditch. The concentrations of dissolved oxygen in the samples (less than 0.05-0.4 milligram per liter) showed that the ground water beneath and near the ditch is anaerobic, indicating that substantial chlorobenzene biodegradation in the aquifer beneath the ditch is unlikely. Probable alternative mechanisms of chlorobenzene removal in the ground water beneath the drainage ditch include sorption onto the organic-rich sediment and contaminant depletion by cattails through uptake, sorption, and localized soil aeration.

  12. [How the Feast of Corpus Christi at the psychiatric hospital of Sarthe became a historical event].

    PubMed

    Guillemain, Hervé

    2010-01-01

    Can the historian, passionate about archives, build a historical narrative based mainly on the memories of nurses? Could the caregivers, who are themselves players in the history of psychiatry write it? When the former hears the individual accounts of the latter, history is written. The history of the Feast of Corpus Christi at the psychiatric hospital of Le Mans.

  13. Factors associated with birth defects in the region of Corpus Christi, Texas

    EPA Science Inventory

    In recent years, the Birth Defects Epidemiology & Surveillance Branch of the Texas Department of State Health Services (DSHS) has documented a high prevalence of certain birth defects in the Corpus Christi, TX region. We conducted a case-control study to evaluate associations...

  14. IMPACT OF STORM-WATER OUTFALLS ON SEDIMENT QUALITY IN CORPUS CHRISTI BAY, TEXAS, USA

    EPA Science Inventory

    To determine the quality of sediments and extent of contaminant impacts, a Sediment Quality Triad (SQT) study was conducted at 36 sites in the Corpus Christi Bay, Texas, USA, system. Fifteen of the 36 sites were located near storm-water outfalls, but 13 other sites (i.e., industr...

  15. 75 FR 43886 - Proposed Amendment of Class E Airspace; Corpus Christi, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-27

    ..., Nueces County Airport, TX (Lat. 27 46'43'' N., long. 97 41'26'' W.) Corpus Christi VORTAC, TX (Lat. 27 54... within a 6.3-mile radius of Nueces County Airport, and within a 7.6-mile radius of Aransas County...

  16. 75 FR 13453 - Proposed Amendment of Class E Airspace; Corpus Christi, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-22

    ..., Nueces County Airport, TX (Lat. 27 46'43'' N., long. 97 41'26'' W.) Corpus Christi VORTAC, TX (Lat. 27 54...Campbell Airport, and within a 6.3-mile radius of Nueces County Airport, and within a 7.6-mile radius...

  17. The heliocentric system from the Orphic Hymns and the Pythagoreans to emperor Julian

    NASA Astrophysics Data System (ADS)

    Theodossiou, Efstratios; Dacanalis, Aris; Dimitrijević, Milan, S.; Mantarakis, Petros

    The evolution of the heliocentric theory in the antiquity has been analyzed, from the first seeds in the Orphic Hymns to the emperor Julian, also called "the Apostate" in the 4th century A.D. In particular the Orphic Hymns, views of Pythagoreans, as well as the heliocentric ideas of Philolaus of Croton, Icetas, Ecphantus, Heraclides of Pontos, Anaximander, Seleucus of Seleucia, Aristarchus of Samos and Emperor Julian were analyzed.

  18. Madden-Julian Oscillation impacts on tropical African precipitation

    NASA Astrophysics Data System (ADS)

    Zaitchik, Benjamin F.

    2017-02-01

    The Madden-Julian Oscillation (MJO) is the dominant mode of sub-seasonal climate variability in the global tropics. As such it represents an opportunity for intra-seasonal rainfall prediction and, perhaps, for explaining dynamics that underlie longer term variability and trends. This opportunity is of substantial interest for tropical Africa, where rainfall variability has significant impacts on agriculture, energy, and natural ecosystems. The objective of this review paper is to inventory and assess the state of knowledge of MJO influence on African rainfall. A number of studies have identified statistical links between MJO and sub-seasonal rainfall variability in West, East, and Southern Africa. The proposed mechanisms to explain this influence differ by region and by season, and they often involve multiscale interactions between local precipitation processes and MJO-associated atmospheric dynamics. Dynamically-based forecast systems have some skill in predicting MJO evolution to time horizons of 3-4 weeks, and some can capture teleconnections to Africa. On longer time scales, there is evidence that MJO activity both modulates and is modulated by the El Niño Southern Oscillation and the Indian Ocean Dipole. The implications of these interactions for MJO connections to Africa require further research, as does the potential for trends in MJO behavior and impacts on Africa under global climate change.

  19. Does the Madden-Julian Oscillation influence aerosol variability?

    NASA Astrophysics Data System (ADS)

    Tian, Baijun; Waliser, Duane E.; Kahn, Ralph A.; Li, Qinbin; Yung, Yuk L.; Tyranowski, Tomasz; Geogdzhayev, Igor V.; Mishchenko, Michael I.; Torres, Omar; Smirnov, Alexander

    2008-06-01

    We investigate the modulation of aerosols by the Madden-Julian Oscillation (MJO) using multiple, global satellite aerosol products: aerosol index (AI) from the Total Ozone Mapping Spectrometer (TOMS) on Nimbus-7, and aerosol optical thickness (AOT) from the Moderate Resolution Imaging Spectroradiometer (MODIS) on Terra and Aqua and the Advanced Very High Resolution Radiometer (AVHRR) on NOAA satellites. A composite MJO analysis indicates that large variations in the TOMS AI and MODIS/AVHRR AOT are found over the equatorial Indian and western Pacific Oceans where MJO convection is active, as well as the tropical Africa and Atlantic Ocean where MJO convection is weak but the background aerosol level is high. A strong inverse linear relationship between the TOMS AI and rainfall anomalies, but a weaker, less coherent positive correlation between the MODIS/AVHRR AOT and rainfall anomalies, were found. The MODIS/AVHRR pattern is consistent with ground-based Aerosol Robotic Network data. These results indicate that the MJO and its associated cloudiness, rainfall, and circulation variability systematically influence the variability in remote sensing aerosol retrieval results. Several physical and retrieval algorithmic factors that may contribute to the observed aerosol-rainfall relationships are discussed. Preliminary analysis indicates that cloud contamination in the aerosol retrievals is likely to be a major contributor to the observed relationships, although we cannot exclude possible contributions from other physical mechanisms. Future research is needed to fully understand these complex aerosol-rainfall relationships.

  20. Tracking Pulses of the Madden-Julian Oscillation

    SciTech Connect

    Yoneyama, Kunio; Zhang, Chidong; Long, Charles N.

    2013-12-13

    An international field campaign aiming at atmospheric and oceanic processes associated with the Madden-Julian Oscillation (MJO) was conducted in and around the tropical Indian Ocean (IO) during October 2011 - March 2012. The objective of the field campaign was to collect observations urgently needed to expedite the progress of understanding the key processes of the MJO, focusing on its initiation but also including propagation and maturation, and ultimately to improve skills of numerical simulation and prediction of the MJO. Primary targets of the field campaign include interaction of atmospheric deep convection with its environmental moisture, evolution of cloud populations, and air-sea interaction. Several MJO events were captured by ground-based, airborne, and oceanic instruments with advanced observing technology. Numerical simulations and real-time forecasts were integrated components of the field campaign in its design and operation. Observations collected during the campaign provide unprecedented opportunities to reveal detailed processes of the MJO and to assist evaluation, improvement and development of weather and climate models. The data policy of the campaign encourages the broad research community to use the field observations to advance the MJO study.

  1. Julian Huxley, Uca pugnax and the allometric method.

    PubMed

    Packard, Gary C

    2012-02-15

    The allometric method, which often is attributed to Julian Huxley, entails fitting a straight line to logarithmic transformations of the original bivariate data and then back-transforming the resulting equation to form a power function in the arithmetic scale. Development of the technique was strongly influenced by Huxley's own research on growth by the enlarged 'crusher' claw in male fiddler crabs (Uca pugnax). Huxley reported a discontinuity in the log-log plot of chela mass vs body mass, which he interpreted as an abrupt change in relative growth of the chela at about the time crabs attain sexual maturity. My analysis of Huxley's arithmetic data indicates, however, that the discontinuity was an artifact caused by logarithmic transformation and that dynamics of growth by the crusher claw do not change at any point during development. Arithmetic data are well described by a power function fitted by nonlinear regression but not by one estimated by back-transforming a line fitted to logarithms. This finding and others like it call into question the continued reliance on the allometric method in contemporary research.

  2. Building on Julian Tudor Hart's example of anticipatory care.

    PubMed

    Watt, Graham; O'Donnell, Catherine; Sridharan, Sanjeev

    2011-01-01

    The prevention and delay of chronic disease is an increasing priority in all advanced health-care systems, but sustainable, effective and equitable approaches remain elusive. In a famous pioneering example in the UK, Julian Tudor Hart combined reactive and anticipatory care within routine consultations in primary medical care, while applying a population approach to delivery and audit. This approach combined the structural advantages of UK general practice, including universal coverage and the absence of user fees, with his long-term commitment to individual patients, and was associated with a 28% reduction in premature mortality over a 25-year period. The more recent, and comprehensively evaluated Scottish National Health Service demonstration project, 'Have a Heart Paisley', took a different approach to cardiovascular prevention and health improvement, using population screening for ascertainment, health coaches and referral to specific health improvement programmes for diet, smoking and exercise. We draw from both examples to construct a conceptual framework for anticipatory care, based on active ingredients, programme pathways and whole system approaches. While the strengths of a family practice approach are coverage, continuity, co-ordination and long-term relationships, the larger health improvement programme offered additional resources and expertise. As theory and evidence accrue, the challenge is to combine the strengths of primary medical care and health improvement, in integrated, sustainable systems of anticipatory care, addressing the heterogeneity of individual needs and solutions, while achieving high levels of coverage, continuity, co-ordination and outcome.

  3. Modulation of Atlantic Aerosols by the Madden-Julian Oscillation

    NASA Technical Reports Server (NTRS)

    Tian, B.; Waliser, D. E.; Kahn, Ralph A.; Wong, S.

    2010-01-01

    Much like the better-known EI Nino-Southern Oscillation, the Madden-Julian Oscillation (MJO) is a global-scale atmospheric phenomenon. The MJO involves periodic, systematic changes in the distribution of clouds and precipitation over the western Pacific and Indian oceans, along with differences in wind intensity over even more extensive areas, including the north and subtropical Atlantic Ocean. The lead authors of this paper developed a sophisticated mathematical technique for mapping the spatial and temporal behavior of changes in the atmosphere produced by the MJO. In a previous paper, we applied this technique to search for modulation of airborne particle amount in the eastern hemisphere associated with the "wet" (cloudy) vs. "dry" phases of the MJO. The study used primarily AVHRR, MODIS, and TOMS satellite-retrieved aerosol amount, but concluded that other factors, such as cloud contamination of the satellite signals, probably dominated the observed variations. The current paper looks at MJO modulation of desert dust transport eastward across the Atlantic from northern Africa, a region much less subject to systematic cloud contamination than the eastern hemisphere areas studied previously. In this case, a distinct aerosol signal appears, showing that dust is transported westward much more effectively during the MJO phase that favors westward-flowing wind, and such transport is suppressed when the MJO reduces these winds. Aside form the significant achievement in identifying such an effect, the result implies that an important component of global dust transport can be predicted based on the phase of the MJO. As a consequence, the impact of airborne dust on storm development in the Atlantic, and on dust deposition downwind of the desert sources, can also be predicted and more accurately modeled.

  4. Does the Madden-Julian Oscillation Influence Aerosol Variability?

    NASA Astrophysics Data System (ADS)

    Tian, B.; Waliser, D. E.; Kahn, R. A.; Li, Q.; Yung, Y. L.; Tyranowski, T.; Geogdzhayev, I. V.; Mishchenko, M. I.; Torres, O.; Smirnov, A.

    2007-12-01

    We investigate the modulation of aerosols by the Madden-Julian Oscillation (MJO) using satellite-based global aerosol products, including aerosol index (AI) from the Total Ozone Mapping Spectrometer (TOMS) on Nimbus-7, and aerosol optical thickness (AOT) from the Moderate Resolution Imaging Spectroradiometer (MODIS) on Terra and Aqua and the Advanced Very High Resolution Radiometer (AVHRR) on NOAA satellites. A composite analysis is performed for boreal winter, and the global pentad rainfall data from the NOAA Climate Prediction Center (CPC) Merged Analysis of Precipitation (CMAP) are used to identify MJO events. The MJO composites exhibit large variations in the TOMS AI and MODIS/AVHRR AOT over the equatorial Indian and western Pacific Oceans where MJO convection is active, as well as the tropical Africa and Atlantic Ocean where MJO convection is relatively weak but the background aerosol level is relatively high. A strong inverse linear relationship between the TOMS AI and rainfall anomalies, but a weaker, less coherent positive correlation between the MODIS/AVHRR AOT and rainfall anomalies, were found. The Aerosol Robotic Network AOT pattern at Kaashidoo (73.5°E, 4.9°N) and Nauru (167°E, 0.5°S) is more consistent with MODIS and AVHRR. These results indicate a connection between the MJO, its associated rainfall and circulation variability, and the observed aerosol variations. Several physical and non-physical factors that may contribute to the observed aerosol-rainfall relationship, such as aerosol humidification effect, wet deposition, surface wind speed, phytoplankton, different sensor sensitivities (absorbing versus non-absorbing aerosols and upper versus lower tropospheric aerosols), sampling issue, and cloud contamination, are discussed. However, a clear causal explanation for the observed patterns remains elusive. Further investigation is needed to unravel this complex aerosol-rainfall relationship.

  5. The life cycle of the Madden-Julian oscillation

    NASA Technical Reports Server (NTRS)

    Hendon, Harry H.; Salby, Murry L.

    1994-01-01

    A composite life cycle of the Madden-Julian oscillation (MJO) is constructed from the cross covariance between outgoing longwave radiation (OLR), wind, and temperature. To focus on the role of convection, the composite is based on episodes when a discrete signal in OLR is present. The composite convective anomaly possesses a predominantly zonal wavenumber 2 structure that is confined to the eastern hemisphere. There, it propagates eastward at about 5 m/s and evolves through a systematic cycle of amplification and decay. Unlike the convective anomaly, the circulation anomaly is not confined to the eastern hemisphere. The circulation anomaly displays characteristics of both a forced response, coupled to the convective anomaly as it propagates across the eastern hemisphere, and a radiating response, which propagates away from the convective anomaly into the western hemisphere at about 10 m/s. The forced response appears as a coupled Rossby-Kelvin wave while the radiating response displays predominantly Kelvin wave features. When it is amplifying, the convective anomaly is positively correlated to the temperature perturbation, which implies production of eddy available potential energy (EAPE). A similar correlation between upper-tropospheric divergence and temperature implies conversion of EAPE to eddy kinetic energy during this time. When it is decaying, temperature has shifted nearly into quadrature with convection, so their correlation and production of EAPE are then small. The same correspondence to the amplification and decay of the disturbance is mirrored in the phase relationship between surface convergence and anomalous convection. The correspondence of surface convergence to the amplification and decay of the convective anomaly suggests that frictional wave- Conditional Instability of the Second Kind (CISK) plays a key role in generating the MJO.

  6. 78 FR 37792 - Mario Julian Martinez-Bernache, Inmate Number #95749-279, CI Big Spring, Corrections Institution...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-24

    ... Bureau of Industry and Security Mario Julian Martinez-Bernache, Inmate Number 95749-279, CI Big Spring... 15, 2012, in the U.S. District Court, Southern District of Texas, Mario Julian Martinez-Bernache (``Martinez-Bernache'') was convicted of violating Section 38 of the Arms Export Control Act (22 U.S.C....

  7. Simplified metrics for the identification of the Madden-Julian oscillation in models

    SciTech Connect

    Sperber, Kenneth R.; Kim, Daehyun

    2012-07-01

    We propose simplified metrics to evaluate the fidelity with which the Madden–Julian oscillation (MJO) is simulated in climate models. These metrics are based on lag correlation analysis of principal component time series (PCs). The PCs are obtained by projecting simulated 20–100 day bandpass filtered daily outgoing longwave radiation onto the two leading empirical orthogonal functions of observed MJO variability. The simplified MJO metrics, the maximum positive correlation and time lag at which it occurs, provide consistent information relative to more complex diagnostics developed by the Madden–Julian Oscillation Working Group (CLIVAR MJOWG) and by Kim et al.

  8. A trio-interaction theory for Madden-Julian oscillation

    NASA Astrophysics Data System (ADS)

    Wang, Bin; Liu, Fei; Chen, Guosen

    2016-12-01

    The Madden-Julian oscillation (MJO) is the dominant mode of tropical atmospheric intraseasonal variability and a primary source of predictability for global sub-seasonal prediction. Understanding the origin and perpetuation of the MJO has eluded scientists for decades. The present paper starts with a brief review of progresses in theoretical studies of the MJO and a discussion of the essential MJO characteristics that a theory should explain. A general theoretical model framework is then described in an attempt to integrate the major existing theoretical models: the frictionally coupled Kelvin-Rossby wave, the moisture mode, the frictionally coupled dynamic moisture mode, the MJO skeleton, and the gravity wave interference, which are shown to be special cases of the general MJO model. The last part of the present paper focuses on a special form of trio-interaction theory in terms of the general model with a simplified Betts-Miller (B-M) cumulus parameterization scheme. This trio-interaction theory extends the Matsuno-Gill theory by incorporating a trio-interaction among convection, moisture, and wave-boundary layer (BL) dynamics. The model is shown to produce robust large-scale characteristics of the observed MJO, including the coupled Kelvin-Rossby wave structure, slow eastward propagation ( 5 m/s) over warm pool, the planetary (zonal) scale circulation, the BL low-pressure and moisture convergence preceding major convection, and amplification/decay over warm/cold sea surface temperature (SST) regions. The BL moisture convergence feedback plays a central role in coupling equatorial Kelvin and Rossby waves with convective heating, selecting a preferred eastward propagation, and generating instability. The moisture feedback can enhance Rossby wave component, thereby substantially slowing down eastward propagation. With the trio-interaction theory, a number of fundamental issues of MJO dynamics are addressed: why the MJO possesses a mixed Kelvin-Rossby wave structure

  9. Madden Julian Oscillation impacts on global ocean surface waves

    NASA Astrophysics Data System (ADS)

    Marshall, Andrew G.; Hendon, Harry H.; Durrant, Tom H.; Hemer, Mark A.

    2015-12-01

    We assess the impact of the tropical Madden Julian Oscillation (MJO) on global ocean wind waves using 30 years of wave data from a wave model hindcast that is forced with high resolution surface winds from the NCEP-CFSR reanalysis. We concentrate on the boreal winter season when the MJO has its greatest amplitude and is potentially a source of predictable wave impacts at intra-seasonal lead times. Statistically significant anomalies in significant wave height (Hs), peak wave period (Tp) and zonal wave energy flux (CgE) are found to covary with the intra-seasonal variation of surface zonal wind induced by the MJO as it traverses eastward from the western tropical Indian Ocean to the eastern tropical Pacific. Tp varies generally out of phase with Hs over the life cycle of the MJO, indicating that these MJO-wave anomalies are locally wind-generated rather than remotely generated by ocean swell. Pronounced Hs anomalies develop on the northwest shelf of Australia, where the MJO is known to influence sea level and surface temperatures, and in the western Caribbean Sea and Guatemalan-Panama Seas with enhanced wave anomalies apparent in the vicinity of the Tehuantepec and Papagayo gaps. Significant wave anomalies are also detected in the North Pacific and North Atlantic oceans in connection with the MJO teleconnection to the extratropics via atmospheric wave propagation. The impact in the north Atlantic stems from induction of the high phase of the North Atlantic Oscillation (NAO) about 1 week after MJO convection traverses the Indian Ocean, and the low phase of the NAO about one week after suppressed convection traverses the Indian Ocean. Strong positive Hs anomalies maximize on the Northern European coast in the positive NAO phase and vice versa for the negative NAO phase. The MJO also influences the occurrence of daily low (below the 5th percentile) and high (above the 95th percentile) wave conditions across the tropics and in the North Pacific and North Atlantic

  10. From a Dual to a Tri-Partite School System: The Origins and Development of Educational Segregation in Corpus Christi, Texas.

    ERIC Educational Resources Information Center

    San Miguel, Guadalupe, Jr.

    1979-01-01

    Describes how the Corpus Christi public school system adapted around 1900 to that region's changing social and economic conditions. Contends that the public schools reflected the peculiar form of racial segregation that became established in Corpus Christi and reflected the local society's caste-like structure which separated Blacks, Whites, and…

  11. Estimated sediment deposition in Lake Corpus Christi, Texas, 1972-85

    USGS Publications Warehouse

    Leibbrand, Norman F.

    1987-01-01

    Some difference was found in comparison of the results of the U.S. Geological Survey (Water Resources Division) study and the McCaughan and Etheridge Consulting Engineers study. Total sediment outflow from Lake Corpus Christi was estimated at 177 acre-feet (dry) by the Geological Survey and 1,070 acre-feet (dry) by McCaughan and Etheridge Consulting Engineers. This difference may be due to construction of a new dam, completed in 1958, that is higher and inundated the old dam.

  12. The ethnobotany of Christ's Thorn Jujube (Ziziphus spina-christi) in Israel

    PubMed Central

    Dafni, Amots; Levy, Shay; Lev, Efraim

    2005-01-01

    This article surveys the ethnobotany of Ziziphus spina-christi (L.) Desf. in the Middle East from various aspects: historical, religious, philological, literary, linguistic, as well as pharmacological, among Muslims, Jews, and Christians. It is suggested that this is the only tree species considered "holy" by Muslims (all the individuals of the species are sanctified by religion) in addition to its status as "sacred tree " (particular trees which are venerated due to historical or magical events related to them, regardless of their botanical identity) in the Middle East. It has also a special status as "blessed tree" among the Druze. PMID:16270941

  13. Maps showing textural characteristics of benthic sediments in the Corpus Christi Bay estuarine system, south Texas

    USGS Publications Warehouse

    Shideler, Gerald L.; Stelting, Charles E.; McGowen, Joseph H.

    1981-01-01

    Corpus Christi Bay is a heavily used estuary on the south Texas coast in the northwest Gulf of Mexico (fig. 1).  The Bay is stressed by diverse activities which could substantially affect its ecosystem.  Such activities include shipping, resource production (oil, gas, and construction aggregate), commercial and sport fishing, and recreation.  Shipping activities alone have had a substantial impact on the bay.  For example, the past maintenance of navigation channels has required extensive dredging and spoil disposal within the estuarine system.  Numerous subaqueous spoil disposal sites and subaerial spoil banks are present throughout the bay (fig. 1), and the selection of future spoil disposal sites is becoming a critical local problem.  As activities in the bay increase, the need for effective environmental management becomes increasingly important, and effective management necessitates a good understanding of the bay's physical characteristics.  The objective of this study is to provide detailed information about the textural composition of bottom sediments within the estuarine system, information which could be used in making environmental-management decisions.  Visual descriptions of bottom sediments in Corpus Christi Bay and adjacent areas have been presented by McGowen and Morton (1979).  Additionally, a study of the textures of sediments on the Inner Continental Shelf adjacent to the bay has been presented by Shideler and Berryhill (1977).

  14. 33 CFR 3.40-35 - Sector Corpus Christi Marine Inspection Zone and Captain of the Port Zone.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    .... The boundaries of Sector Corpus Christi's Marine Inspection Zone and Captain of the Port Zone start at the junction of the sea and the east bank of the Colorado River at latitude 28°35′44″ N, longitude 95... southwest along the northern boundary of Wharton County, TX; thence northwest along the eastern and...

  15. 33 CFR 3.40-35 - Sector Corpus Christi Marine Inspection Zone and Captain of the Port Zone.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    .... The boundaries of Sector Corpus Christi's Marine Inspection Zone and Captain of the Port Zone start at the junction of the sea and the east bank of the Colorado River at latitude 28°35′44″ N, longitude 95... southwest along the northern boundary of Wharton County, TX; thence northwest along the eastern and...

  16. 33 CFR 3.40-35 - Sector Corpus Christi Marine Inspection Zone and Captain of the Port Zone.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    .... The boundaries of Sector Corpus Christi's Marine Inspection Zone and Captain of the Port Zone start at the junction of the sea and the east bank of the Colorado River at latitude 28°35′44″ N, longitude 95... southwest along the northern boundary of Wharton County, TX; thence northwest along the eastern and...

  17. 33 CFR 3.40-35 - Sector Corpus Christi Marine Inspection Zone and Captain of the Port Zone.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    .... The boundaries of Sector Corpus Christi's Marine Inspection Zone and Captain of the Port Zone start at the junction of the sea and the east bank of the Colorado River at latitude 28°35′44″ N, longitude 95... southwest along the northern boundary of Wharton County, TX; thence northwest along the eastern and...

  18. 33 CFR 3.40-35 - Sector Corpus Christi Marine Inspection Zone and Captain of the Port Zone.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    .... The boundaries of Sector Corpus Christi's Marine Inspection Zone and Captain of the Port Zone start at the junction of the sea and the east bank of the Colorado River at latitude 28°35′44″ N, longitude 95... southwest along the northern boundary of Wharton County, TX; thence northwest along the eastern and...

  19. Surface Wind and Upper-Ocean Variability Associated with the Madden-Julian Oscillation Simulated by the Coupled Ocean-Atmosphere Mesoscale Prediction System

    DTIC Science & Technology

    2013-07-01

    Madden- Julian Oscillation Simulated by the Coupled Ocean-Atmosphere Mesoscale Prediction System 0601153N 73-4347-22-5 Toshiaki Shinoda, Tommy G...unlimited. Simulation of surface wind and upper-ocean variability associated with the Madden - Julian oscillation (MJO) by a regional coupled model, the...based on the comparison with the spatial variation of surface forcing fields. Indian Ocean, diurnal effects, Madden- Julian oscillation, coupled

  20. Large-Scale Oceanic Variability Associated with the Madden-Julian Oscillation during the CINDY/DYNAMO Field Campaign from Satellite Observations

    DTIC Science & Technology

    2013-04-29

    dynamical ocean feedback mechanism for the Madden- Julian oscillation. Quart. J. Roy. Meteorol. Soc. 2010,136, 740-754. 42. McCreary , J.P.; Kundu, P.K...Variability Associated with the Madden- Julian Oscillation During the CINDY/DYNAMO Field Campaign from Satellite Observations 5a. CONTRACT NUMBER 5b...measurements based on the comparison with in-situ observations. 15. SUBJECT TERMS Indian Ocean, Madden- Julian Oscillation, CINDY/DYNAMO, aquarius

  1. Conceptual ecosystem model of the Corpus Christi Bay National Estuary Program study area. Final report

    SciTech Connect

    Montagna, P.A.; Li, J.; Street, G.T.

    1996-01-01

    This report developed a conceptual ecosystem model, both pictorial and narrative, of the Corpus Christi Bay National Estuary Program (CCBNEP) study area. The model demonstrates ecosystem linkages at all trophic levels and substrate types, and provides a conceptual framework with which to assess ecological and environmental impacts (both episodic and cumulative) associated with external influences. The model is based on current scientific consensus regarding the modeling of estuarine ecosystem components, and data and information regarding these relationships within the study area. The model was developed to two levels of detail: (1) a detailed model suitable for the scientific and technical community; and, (2) a simple model suitable for use in CCBNEP public documents and management conference deliberations.

  2. Hydrogeochemical and stream sediment reconnaissance basic data for Corpus Christi NTMS quadrangle, Texas

    SciTech Connect

    Not Available

    1980-05-31

    Results of a reconnaissance geochemical survey of the Corpus Christi Quadrangle, Texas, are reported. Field and laboratory data are presented for 119 groundwater samples and 57 stream sediment samples. Also included is a brief discussion on the geology and hydrology of the quadrangle. Groundwater data indicate that uranium concentrations above the 85th percentile occur primarily in a trend in western Nueces County. With one exception, waters in the trend are produced from the Evangeline aquifer and have high values for selenium and strontium. Owing to urbanization, low topographic relief, and the presence of Recent-to-Pleistocene surface material, stream sediment data were found to be less than optimum for the determination of the potential for uranium mineralization, and variation in uranium concentrations between units may simply reflect lithologic differences.

  3. The influence of coastal wetlands on hurricane surge in Corpus Christi, TX

    NASA Astrophysics Data System (ADS)

    Ferreira, C.; Irish, J. L.; Olivera, F.

    2010-12-01

    The State of Texas has historically faced hurricane-related damage episodes, with Ike being the most recent example. It is expected that, in the future, hurricanes will intensify due to climate change causing greater surges, while the attenuating effect of wetlands on storm surges will also be modified due to sea level rise changes in wetland vegetation type and spatial location. Numerical analysis of storm surges is an important instrument to predict and simulate flooding extent and magnitude in coastal areas. Most operational surge models account for the influence of wetlands and other vegetation by momentum loss due to friction at the bottom and by reduction of imposed wind stress. A coupled hydrodynamic model (ADCIRC) and wave model (SWAN) was employed, and wetlands were characterized using Manning’s n, surface canopy, and surface roughness. The wetlands parameters were developed from: 1) the National Land Cover Dataset (NLCD) 1992 and 2001; 2) the National Wetlands Inventory (NWI) 2001. The calibrated coupled model for two historical hurricanes, Bret and Beulah, was used to simulate the storm surge for each scenario. Preliminary results for the sensitivity analyses, for hurricane Bret, comparing the scenarios with parameters developed from NLCD and NWI datasets with four hypothetical scenarios considering very high and low Manning’s n and wind stress (surface canopy) values showed that, for areas inside Nueces Bay, the storm surge high could vary up to four times depending on the parameter selection, for areas inside Corpus Christi Bay, the storm surge high varied around three times and behind the barrier island the storm surge high variation was less than three times. This study is a first step for an evaluation of the impact that sea level rise, climate changed wetlands, wetlands restoration, land use change, and wetlands degradation have on hurricane related surge elevation and extent in the city of Corpus Christi.

  4. Simulated Madden-Julian Oscillation structure and sea-surface temperature dependence within an aquaplanet model

    NASA Astrophysics Data System (ADS)

    Colon, Edward

    The response of simulated Madden-Julian Oscillations to changes in sea surface temperature climatologies, turbulent surface flux parameterizations, moisture time tendency parameterizations, and air-sea couplings is examined with the use of an aquaplanet model. The intent of this study is to determine the contribution of individual proposed mechanisms to the generation of variability at intraseasonal (30--60 days) timescales. Among the theoretical frameworks tested are Conditional Instability of the Second Kind (CISK) which is a class of scale interaction invoking a feedback between large-scale circulation and cumulus-scale convection, Wind Induced Surface Heat Exchange (WISHE) which asserts that condensational heating and adiabatic cooling in the atmosphere always balance which nullifies CISK so that the primary forcing for the Madden-Julian Oscillation is evaporative moisture fluxes induced by perturbations in easterly surface winds preceding the bulk of convection, and Air-Sea Convective Intraseasonal Interactions (ASCII) which consider the interactive couplings between surface wind magnitude and direction, ocean mixing layer depth, surface latent heat flux anomalies, and cloud shielding effects to create a zonally asymmetric boundary layer water vapor distribution induced by elevated sea surface temperatures to the east of the propagating convective mode and enhanced evaporative fluxes to the west which act to hinder rapid forward progression of the wave. A series of numerical experiments were conducted in which one or more of the model representations of these mechanism were suppressed and the resulting behavior of the simulated Madden Julian Oscillation was evaluated relative to its spatial and temporal structure. It was found that the suppression of WISHE lowered the variability of the simulated Madden Julian Oscillation by a factor of ˜80 while the suppression of the moisture feedback which is driven by difference in surface layer water vapor content had

  5. Seasonal Change in Nearshore and Channel Morphology at Packery Channel, A New Inlet Serving Corpus Christi, Texas

    DTIC Science & Technology

    2011-01-01

    Channel enjoy a variety of activities including fishing, boating, swimming, snorkeling, and kayaking . Consistently strong wind and a weaker longshore...south of Bob Hall Pier. Fish Pass is an artificial inlet that opened in 1978 and began closing naturally soon after construction with complete closure...the Corpus Christi Water Exchange Pass. Rapid natural closure of the Fish Pass created doubt about the stability of the planned inlet at Packery

  6. Geologic map of the Julian 7.5' quadrangle, San Diego County, California

    USGS Publications Warehouse

    Todd, Victoria R.

    2015-01-01

    Jurassic plutons in the Julian quadrangle underwent synkinematic metamorphism with the result that plutonic contacts and foliation are concordant with those in the surrounding metamorphosed country rocks. Foliation in Jurassic plutons consists of the planar orientation of recrystallized mineral grains and aggregates; deformation textures include augen gneiss, mylonitic gneiss, and mylonite. Structural studies indicate that a significant part of this deformation took place in the Cretaceous and, therefore, the regional foliation in this part of the batholith clearly postdates intrusion of many Cretaceous plutons.

  7. Distribution, abundance, and resting microhabitat of burbot on Julian's Reef, southwestern Lake Michigan

    USGS Publications Warehouse

    Edsall, Thomas A.; Kennedy, Gregory W.; Horns, William H.

    1993-01-01

    We used a remotely operated submersible vehicle equipped with a color video camera to videotape the lake bed and document the distribution and abundance of burbot Lota lota on a 156-hectare portion of Julian's Reef in southwestern Lake Michigan. The substrates and bathymetry of the study area had been mapped recently by side-scan sonar. Burbot density determined from videotapes covering 6,900 m2 of lake bed at depths of 23-41 m averaged 139 individuals/ hectare (range, 0-571/hectare). This density was substantially higher than the highest burbot density (59-95/hectare) reported in the literature. Burbot were present on the lake bed at depths of 23-36 m, but were most abundant near the crest of the reef at 23-28 m, where the water temperature was 8-13°C, their preferred summer temperature range. Substrates in that temperature range on the reef were bedrock, bedrock ridges, and bedrock and rubble. Burbot were most abundant on the bedrock and rubble. Small fish and macroinvertebrates typically eaten by burbot elsewhere in western Lake Michigan were distributed on the reef according to their summer preferred temperatures and were not seen in abundance where burbot density was highest. We saw no lake trout Salvelinus namaycush on Julian's Reef, although large numbers of juvenile lake trout have been stocked there annually and temperatures on the reef were in the preferred summer temperature range for lake trout.

  8. Distribution, abundance, and resting microhabitat of burbot on Julian's Reef, southwestern Lake Michigan

    USGS Publications Warehouse

    Edsall, Thomas A.; Kennedy, Gregory W.; Horns, William H.

    1993-01-01

    We used a remotely operated submersible vehicle equipped with a color video camera to videotape the lake bed and document the distribution and abundance of burbot Lota lotaon a 156-hectare portion of Julian's Reef in southwestern Lake Michigan. The substrates and bathymetry of the study area had been mapped recently by side-scan sonar. Burbot density determined from videotapes covering 6,900 m2 of lake bed at depths of 23–41 m averaged 139 individuals/ hectare (range, 0–571/hectare). This density was substantially higher than the highest burbot density (59–95/hectare) reported in the literature. Burbot were present on the lake bed at depths of 23–36 m, but were most abundant near the crest of the reef at 23–28 m, where the water temperature was 8–13°C, their preferred summer temperature range. Substrates in that temperature range on the reef were bedrock, bedrock ridges, and bedrock and rubble. Burbot were most abundant on the bedrock and rubble. Small fish and macroinvertebrates typically eaten by burbot elsewhere in western Lake Michigan were distributed on the reef according to their summer preferred temperatures and were not seen in abundance where burbot density was highest. We saw no lake trout Salvelinus namaycush on Julian's Reef, although large numbers of juvenile lake trout have been stocked there annually and temperatures on the reef were in the preferred summer temperature range for lake trout.

  9. Atmospheric Radiation Measurement Madden-Julian Oscillation Investigation Experiment Field Campaign Report

    SciTech Connect

    Long, Chuck

    2016-07-01

    Every 30–90 days during the Northern Hemisphere winter, the equatorial tropical atmosphere experiences pulses of extraordinarily strong deep convection and rainfall. This phenomenon is referred to as the Madden–Julian Oscillation, or MJO, named after the scientists who identified this cycle. The MJO significantly affects weather and rainfall patterns around the world (Zhang 2013). To improve predictions of the MJO—especially about how it forms and evolves throughout its lifecycle—an international group of scientists collected an unprecedented set of observations from the Indian Ocean and western Pacific region from October 2011 through March 2012 through several coordinated efforts. The coordinated field campaigns captured six distinct MJO cycles in the Indian Ocean. The rich set of observations capturing several MJO events from these efforts will be used for many years to study the physics of the MJO. Here we highlight early research results using data from the Atmospheric Radiation Measurement (ARM) Madden-Julian Oscillation Investigation Experiment (AMIE), sponsored by the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Climate Research Facility.

  10. Impact of storm-water outfalls on sediment quality in Corpus Christi Bay, Texas, USA

    SciTech Connect

    Carr, R.S.; Montagna, P.A.; Biedenbach, J.M.; Kalke, R.; Kennicutt, M.C.; Hooten, R.; Cripe, G.

    2000-03-01

    To determine the quality of sediments and extent of contaminant impacts, a Sediment Quality Triad (SQT) study was conducted at 36 sites in the Corpus Christi Bay, Texas, USA, system. Fifteen of the 36 sites were located near storm-water outfalls, but 13 other sites (i.e., industrial and domestic outfalls, oil field-produced water discharges, and dredging activity) and eight reference sites were also evaluated. Sediment samples were collected and analyzed for physical-chemical characteristics, contaminant concentrations (metals, polycyclic aromatic hydrocarbons [PAHs], polychlorinated biphenyls [PCBs], and pesticides), toxicity, and a benthic index of biotic integrity (BIBI) composed of 10 independent metrics calculated for each site. This large data matrix was reduced using multivariate analysis to create new variables for each component representing overall means and containing most of the variance in the larger data set. The new variables were used to conduct the correlation analysis. Toxicity was significantly correlated with both chemistry and ecological responses, whereas no correlations between the benthic metrics and sediment chemistry were observed. Using the combined information from the SQT, four of the five most degraded sites were storm-water outfall sites. Although estuaries are naturally stressful environments because of salinity and temperature fluctuations, this ecosystem appears to have been compromised by anthropogenic influences similar to what has been observed for other heavily urbanized bay systems along the Texas and Gulf coast.

  11. Impact of storm-water outfalls on sediment quallity in corpus Christi Bay, Texas, USA

    USGS Publications Warehouse

    Carr, R. Scott; Montagna, Paul A.; Biedenbach, James M.; Kalke, Rick; Kennicutt, Mahlon C.; Hooten, Russell L.; Cripe, Geraldine

    2000-01-01

    To determine the quality of sediments and extent of contaminant impacts, a Sediment Quality Triad (SQT) study was conducted at 36 sites in the Corpus Christi Bay, Texas, USA, system. Fifteen of the 36 sites were located near storm-water outfalls, but 13 other sites (i.e., industrial and domestic outfalls, oil field–produced water discharges, and dredging activity) and eight reference sites were also evaluated. Sediment samples were collected and analyzed for physical–chemical characteristics, contaminant concentrations (metals, polycyclic aromatic hydrocarbons [PAHs], polychlorinated biphenyls [PCBs], and pesticides), toxicity (amphipod and mysid solid phase and sea urchin pore-water fertilization and embryological development tests), and a benthic index of biotic integrity (BIBI) composed of 10 independent metrics calculated for each site. This large data matrix was reduced using multivariate analysis to create new variables for each component representing overall means and containing most of the variance in the larger data set. The new variables were used to conduct the correlation analysis. Toxicity was significantly correlated with both chemistry and ecological responses, whereas no correlations between the benthic metrics and sediment chemistry were observed. Using the combined information from the SQT, four of the five most degraded sites were storm-water outfall sites. Although estuaries are naturally stressful environments because of salinity and temperature fluctuations, this ecosystem appears to have been compromised by anthropogenic influences similar to what has been observed for other heavily urbanized bay systems along the Texas and Gulf coast.

  12. Cytotoxicity of different extracts of arial parts of Ziziphus spina-christi on Hela and MDA-MB-468 tumor cells

    PubMed Central

    Jafarian, Abbas; Zolfaghari, Behzad; Shirani, Kobra

    2014-01-01

    Background: It has been shown that plants from the family Rhamnaceae possess anticancer activity. In this study, we sought to determine if Ziziphus spina-christi, a species from this family, has cytotoxic effect on cancer cell lines. Materials and Methods: Using maceration method, different extracts of leaves of Z. spina-christi were prepared. Hexane, chloroform, chloroform-methanol (9:1), methanol-water (7:1) methanol, butanol and water were used for extraction, after preliminary phytochemical analyses were done. The cytotoxic activity of the extracts against Hela and MDA-MB-468 tumor cells was evaluated by MTT assay. Briefly, cells were seeded in microplates and different concentrations of extracts were added. After incubation of cells for 72 h, their viability was evaluated by addition of tetrazolium salt solution. After 3 h medium was aspirated, dimethyl sulfoxide was added and absorbance was determined at 540 nm with an ELISA plate reader. Extracts were considered cytotoxic when more than 50% reduction on cell survival was observed. Results: Hexane, chloroform, chloroform-methanol, butanol, methanol-water and aqueous extracts of Z. spina-christi significantly and concentration-dependently reduced viability of Hela and MAD-MB-468 cells. In the both cell lines, chloroform-methanol extract of Z. spina-christi was more potent than the other extracts. Results: From the finding of this study it can be concluded that Z. spina-christi is a good candidate for further study for new cytotoxic agents. PMID:24627846

  13. Is Julian Assange an International Version of Daniel Ellsberg and WikiLeaks the Modern Equivalent of the Pentagon Papers?

    ERIC Educational Resources Information Center

    Freivogel, William H.

    2011-01-01

    History has placed the stamp of approval on the publication of the Pentagon Papers, the top-secret history of the Vietnam War. If WikiLeaks editor-in-chief Julian Assange is another Daniel Ellsberg, then it is possible the website's disclosures will be viewed over time as similarly in the public interest. A classroom discussion on the release of…

  14. The Relative Importance of Terrestrial Versus Marine Sediment Sources to the Nueces- Corpus Christi Estuary, Texas: An Isotopic Approach

    NASA Astrophysics Data System (ADS)

    Yeager, K. M.; Santschi, P. H.; Schindler, K. J.; Andres, M. J.; Weaver, E. A.

    2006-05-01

    Determining principle sources of sediment to coastal systems is an important and complex problem that figures prominently in a myriad of geological, geomorphological, geochemical and biological processes. Lithogenic (226Ra, 228Ra, 228Th, 230Th, 232Th) and fallout (137Cs, 210Pb) isotopes were used in conjunction with sedimentological methods to determine rates of sedimentation in the Nueces Delta and Nueces-Corpus Christi Estuary and to assess the relative importance of marine versus terrestrial sediment sources to the estuary. Sampling focused primarily on the lower Nueces River, Nueces Delta, Nueces Bay, Corpus Christi Bay, Gulf Intracoastal Waterway (GIW) and Gulf of Mexico (GOM). Gain size data show GIW and GOM sediments to be dominantly sands, Corpus Christi Bay sediments to be dominantly clays and sediments from all other sampled areas to be more homogenized in grain size, suggesting that near shore oceanic sediments are sands derived predominantly from long shore transport in the littoral zone. Bed load and suspended sediments sourced from the Nueces River provide sand and fines to the Nueces Delta and Bay, where the coarser size fractions are effectively retained. Similarity of lithogenic isotope ratios in surface sediment types throughout the system precluded a numeric approach to discerning the importance of each of the two large scale sediment source areas (terrestrial and marine). A stepwise, graphical examination of discrete lithogenic isotope activity concentrations shows more promise. Terrestrial, marine and bay sediment means for 226Ra v. 232Th, 226Ra v. 230Th and 228Ra v. 232Th show that terrestrial and marine sediment sources have different signatures, despite having a similar grain size distribution (sands), and that sediment deposited in Nueces and Corpus Christi Bays are indistinguishable from the terrestrial component. Supporting evidence is provided by thorium isotopes, 230Th v. 232Th, 228Th v. 232Th and 228Th v. 230Th. Nueces Delta

  15. Feature Tracking and Visualization of Madden-Julian Osciallation in Climate Simulation

    SciTech Connect

    Lee, Teng-Yok; Tong, Xin; Shen, Han-Wei; Wong, Pak C.; Hagos, Samson M.; Leung, Lai-Yung R.

    2013-06-20

    Madden-Julian Oscillation (MJO) is one of the less understood aspects of tropical meteorology, which plays a significant role in tropical intra-seasonal variations in rain, temperature and winds over the Indian and Pacific Oceans. In this paper, we present an integrated analysis and visualization framework for MJO episodes simulated by a high resolution regional model. To distinguish MJOs from other weather phenomena, our framework utilizes domain knowledge to track MJOs as finding the globally optimized properties in the data. In addition to enhancing the animation with feature tracking, our visualization system also integrates different visualization components such as Virtual Globe and Hovmoller Diagrams to visualize large scale events both in space and time. By linking all of these visualization components on a web-based interface, scientists can identify cloud and environmental processes associated with the initiation and eastward propagation of MJO more easily.

  16. A Madden-Julian oscillation event realistically simulated by a global cloud-resolving model.

    PubMed

    Miura, Hiroaki; Satoh, Masaki; Nasuno, Tomoe; Noda, Akira T; Oouchi, Kazuyoshi

    2007-12-14

    A Madden-Julian Oscillation (MJO) is a massive weather event consisting of deep convection coupled with atmospheric circulation, moving slowly eastward over the Indian and Pacific Oceans. Despite its enormous influence on many weather and climate systems worldwide, it has proven very difficult to simulate an MJO because of assumptions about cumulus clouds in global meteorological models. Using a model that allows direct coupling of the atmospheric circulation and clouds, we successfully simulated the slow eastward migration of an MJO event. Topography, the zonal sea surface temperature gradient, and interplay between eastward- and westward-propagating signals controlled the timing of the eastward transition of the convective center. Our results demonstrate the potential making of month-long MJO predictions when global cloud-resolving models with realistic initial conditions are used.

  17. Moist thermodynamics of the Madden-Julian Oscillation in a cloud resolving simulation

    SciTech Connect

    Hagos, Samson M.; Leung, Lai-Yung R.

    2011-10-31

    The moist thermodynamic processes that determine the scale and energy of the Madden-Julian Oscillation are investigated using moisture and eddy available potential energy (EAPE) budget analyses on a high resolution regional model simulation. The two MJO episodes observed during the winter of 2007-2008 are realistically simulated. In the model, small differences among the timescales of convective vertical transport, mixing and condensation of moisture determine the timescale of MJO moistening. Furthermore, various cloud types play a damping or destabilizing contribution role in the EAPE budget of the MJO, depending on their characteristic latent heating profile and its covariance with the temperature fluctuations. The results are used identify possible sources of the difficulties in simulating MJO in low resolution models that rely on cumulus parameterizations.

  18. Using AMIE data to study cloud processes within the Madden-Julian Oscillation

    SciTech Connect

    Houze, Robert A.

    2015-12-17

    This study uses AMIE data to show how the small clouds in the Madden-Julian Oscillation first organize into lines and other patterns, how they develop the first rainshowers, how those showers deposit cool air over the ocean surface, how this cool air spreads and triggers deeper convection, how the deep convection develops into mesoscale systems, how the mesoscale systems modify the heating profile through the depth of the troposphere, and how the development of the clouds responds to and interacts with large-scale waves circumnavigating the globe at upper levels, and how equatorial trapped waves at lower levels modulates the development of the cloud population. The techniques used to analyze the radar and sounding data collected in AMIE to achieve the above results are innovative, and to obtain more general results we have used regional modeling with a variety of cloud microphysical schemes in combination with the data analyses.

  19. Ocean feedback to pulses of the Madden-Julian Oscillation in the equatorial Indian Ocean.

    PubMed

    Moum, James N; Pujiana, Kandaga; Lien, Ren-Chieh; Smyth, William D

    2016-10-19

    Dynamical understanding of the Madden-Julian Oscillation (MJO) has been elusive, and predictive capabilities therefore limited. New measurements of the ocean's response to the intense surface winds and cooling by two successive MJO pulses, separated by several weeks, show persistent ocean currents and subsurface mixing after pulse passage, thereby reducing ocean heat energy available for later pulses by an amount significantly greater than via atmospheric surface cooling alone. This suggests that thermal mixing in the upper ocean from a particular pulse might affect the amplitude of the following pulse. Here we test this hypothesis by comparing 18 pulse pairs, each separated by <55 days, measured over a 33-year period. We find a significant tendency for weak (strong) pulses, associated with low (high) cooling rates, to be followed by stronger (weaker) pulses. We therefore propose that the ocean introduces a memory effect into the MJO, whereby each event is governed in part by the previous event.

  20. Disruptions of El Niño–Southern Oscillation teleconnections by the Madden–Julian Oscillation

    USGS Publications Warehouse

    Hoell, Andrew; Barlow, Mathew; Wheeler, Mathew; Funk, Christopher C.

    2014-01-01

    The El Niño–Southern Oscillation (ENSO) is the leading mode of interannual variability, with global impacts on weather and climate that have seasonal predictability. Research on the link between interannual ENSO variability and the leading mode of intraseasonal variability, the Madden–Julian oscillation (MJO), has focused mainly on the role of MJO initiating or terminating ENSO. We use observational analysis and modeling to show that the MJO has an important simultaneous link to ENSO: strong MJO activity significantly weakens the atmospheric branch of ENSO. For weak MJO conditions relative to strong MJO conditions, the average magnitude of ENSO-associated tropical precipitation anomalies increases by 63%, and the strength of hemispheric teleconnections increases by 58%. Since the MJO has predictability beyond three weeks, the relationships shown here suggest that there may be subseasonal predictability of the ENSO teleconnections to continental circulation and precipitation.

  1. Ocean feedback to pulses of the Madden–Julian Oscillation in the equatorial Indian Ocean

    PubMed Central

    Moum, James N.; Pujiana, Kandaga; Lien, Ren-Chieh; Smyth, William D.

    2016-01-01

    Dynamical understanding of the Madden–Julian Oscillation (MJO) has been elusive, and predictive capabilities therefore limited. New measurements of the ocean's response to the intense surface winds and cooling by two successive MJO pulses, separated by several weeks, show persistent ocean currents and subsurface mixing after pulse passage, thereby reducing ocean heat energy available for later pulses by an amount significantly greater than via atmospheric surface cooling alone. This suggests that thermal mixing in the upper ocean from a particular pulse might affect the amplitude of the following pulse. Here we test this hypothesis by comparing 18 pulse pairs, each separated by <55 days, measured over a 33-year period. We find a significant tendency for weak (strong) pulses, associated with low (high) cooling rates, to be followed by stronger (weaker) pulses. We therefore propose that the ocean introduces a memory effect into the MJO, whereby each event is governed in part by the previous event. PMID:27759016

  2. Systematic decomposition of the Madden-Julian Oscillation into balanced and inertio-gravity components

    NASA Astrophysics Data System (ADS)

    Žagar, Nedjeljka; Franzke, Christian L. E.

    2015-08-01

    We present a new method for the three-dimensional multivariate decomposition of the Madden-Julian Oscillation (MJO) into balanced and inertio-gravity (IG) components. The method analyzes global fields with no filtering involved, and it provides a quantitative comparison between the contribution of the Rossby, Kelvin, and other balanced and IG modes to the MJO circulation and its teleconnections. Results based on the ERA Interim reanalysis data and the multivariate MJO index show that the Rossby mode with the lowest meridional index is the largest contributor to the MJO circulation over the Pacific. A smaller role of the Kelvin mode is diagnosed over the Indian Ocean and the maritime continent. The MJO teleconnections in the polar stratosphere appear associated with the leading balanced vertical modes. The presented method shows new ways of evaluating the MJO structure and its global impacts in weather and climate models.

  3. Variations in global tropical cyclone activity and the Madden-Julian Oscillation since the midtwentieth century

    NASA Astrophysics Data System (ADS)

    Klotzbach, Philip J.; Oliver, Eric C. J.

    2015-05-01

    The Madden-Julian oscillation (MJO) has been documented in previous studies to significantly impact tropical cyclone activity in all ocean basins. Most of these studies have utilized the Wheeler-Hendon index. This index is only available since 1974, the period over which remotely sensed outgoing longwave radiation data has been available. Our study utilizes a long reconstructed MJO index, based on surface pressures, which extends back to 1905. We document consistent modulation of tropical cyclone activity by the MJO in all basins over this time period. These modulations are shown to be remarkably stable over the entire analysis period. We also examine the combined impacts of El Niño-Southern Oscillation and the MJO on tropical cyclone activity in each basin over multidecadal time scales.

  4. Thermodynamics of the Madden-Julian Oscillation in a Regional Model with Constrained Moisture

    SciTech Connect

    Hagos, Samson M.; Leung, Lai-Yung R.; Dudhia, Jimy

    2011-09-01

    In order to identify the main thermodynamic processes that sustain the Madden Julian Oscillation, an eddy available potential energy budget analysis is performed on a WRF simulation with moisture constrained by observations. The model realistically simulates the two MJO episodes observed during the winter of 2007-2008. The analysis shows that instabilities and damping associated with variations in diabatic heating and energy transport work in concert to provide the MJO with its observed characteristics. The results are used to construct a simplified paradigm of MJO thermodynamics. Furthermore, the effect of moisture nudging on the simulation is analyzed to understand the limitations of the model cumulus parameterization. Without moisture nudging, the parameterization fails to provide adequate low-level (upper-level) moistening during the early (late) stage of the MJO active phase. The moistening plays a critical role in providing stratiform heating variability that is an important source of eddy available potential energy for the model MJO.

  5. Intraseasonal variations of the tropical total ozone and their connection to the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Tian, B.; Yung, Y. L.; Waliser, D. E.; Tyranowski, T.; Kuai, L.; Fetzer, E. J.; Irion, F. W.

    2007-04-01

    We investigate the intraseasonal (30-90 day) variations in satellite-observed tropical total ozone (O3) and their connection to the Madden-Julian Oscillation (MJO). Tropical total O3 intraseasonal variations are large (~+/-10 DU) and comparable to those in annual and interannual time scales. These O3 anomalies are mainly evident in the subtropics over the Pacific and eastern; hemisphere and propagate slowly eastward (~5 m s-1). The subtropical negative (positive) O3 anomalies are typically collocated with the subtropical upper troposphere anticyclones (cyclones) generated by equatorial MJO convection and flank or lie to the west of the equatorial enhanced (suppressed) MJO convection. The subtropical O3 are anti-correlated with geopotential height anomalies near the tropopause and thus mainly associated with the O3 variability in the stratosphere rather the troposphere. Over the equatorial regions, total O3 anomalies are small.

  6. Modulation of the boreal wintertime Madden-Julian oscillation by the stratospheric quasi-biennial oscillation

    NASA Astrophysics Data System (ADS)

    Yoo, Changhyun; Son, Seok-Woo

    2016-02-01

    Madden-Julian oscillation (MJO), the dominant mode of intraseasonal variability in the tropical troposphere, has a significant impact on global weather and climate. Here we present that the year-to-year variation of the MJO activity shows significant changes with the quasi-biennial oscillation (QBO) in the tropical stratosphere. Specifically, the boreal winter MJO amplitude, evaluated by various metrics, is typically stronger than normal during the QBO easterly phase at 50 hPa and weaker than normal during the QBO westerly phase at 50 hPa. This relationship, which is possibly mediated by the QBO-related static stability and/or vertical wind shear changes in the tropical upper troposphere and lower stratosphere, is robust whether or not the activeness of the MJO or QBO is taken into account. This result suggests a new potential route from the stratosphere that regulates the organized tropical convection, helping to improve the prediction skill of the boreal winter MJO.

  7. Visualizing and verifying probabilistic forecasts of the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Marshall, Andrew G.; Hendon, Harry H.; Hudson, Debra

    2016-12-01

    We describe a new approach for presenting probabilistic forecasts of the Madden-Julian Oscillation (MJO) based on the community standard Real-time Multivariate MJO (RMM) index, using forecasts from version 2 of the Predictive Ocean Atmosphere Model for Australia. This new display overcomes the difficulty of interpreting a dispersive ensemble plume and directly quantifies the probability for the MJO to occur in each of its eight RMM-defined phases as well as the weak phase. Beyond monitoring and interpreting predictions of the MJO, this new approach also provides a basis for forecast verification using probability-based skill scores. Here we present a clear and concise quantitative summary of this innovative method for accessing probability of the state of the MJO in an ensemble forecast. This new method compliments the traditional MJO ensemble forecast display and verification and will benefit global forecasting centers, international MJO working groups, and the World Meteorological Organization Subseasonal to Seasonal Project.

  8. In Appreciation Julian Schwinger: From Nuclear Physics and Quantum Electrodynamics to Source Theory and Beyond

    NASA Astrophysics Data System (ADS)

    Milton, Kimball A.

    2007-01-01

    Julian Schwinger’s influence on twentieth-century science is profound and pervasive. He is most famous for his renormalization theory of quantum electrodynamics, for which he shared the Nobel Prize in Physics for 1965 with Richard Feynman and Sin-itiro Tomonaga. This triumph undoubtedly was his most heroic work, but his legacy lives on chiefly through subtle and elegant work in classical electrodynamics, quantum variational principles, proper-time methods, quantum anomalies, dynamical mass generation, partial symmetry, and much more. Starting as just a boy, he rapidly became one of the preeminent nuclear physicists in the world in the late 1930s, led the theoretical development of radar technology at the Massachusetts Institute of Technology during World War II, and soon after the war conquered quantum electrodynamics, becoming the leading quantum-field theorist for two decades, before taking a more iconoclastic route during the last quarter century of his life.

  9. Julian Davies and the discovery of kanamycin resistance transposon Tn5.

    PubMed

    Berg, Douglas E

    2016-10-12

    This paper recounts some of my fond memories of a collaboration between Julian Davies and myself that started in 1974 in Geneva and that led to our serendipitous discovery of the bacterial kanamycin resistance transposon Tn5, and aspects of the lasting positive impact of our interaction and discovery on me and the community. Tn5 was one of the first antibiotic resistance transposons to be found. Its analysis over the ensuing decades provided valuable insights into mechanisms and control of transposition, and led to its use as a much-valued tool in diverse areas of molecular genetics, as also will be discussed here.The Journal of Antibiotics advance online publication, 12 October 2016; doi:10.1038/ja.2016.120.

  10. Formulation and evaluation of antihyperglycemic leaf extracts of Zizyphus spina-christi (L.) Willd.

    PubMed

    Nesseem, D I; Michel, C G; Sleem, A A; El-Alfy, T S

    2009-02-01

    This study deals with the formulation of antihyperglycemic leaf extracts of Zizyphus spina-christi (L.) Willd. A bioactivity guided fractionation of different leaf extracts [defatted ethanol 70% (a), butanol (b), ethanol 70% (c), ethyl acetate (d) and petroleum ether (e) extracts] revealed that extract (c) possessed the highest antihyperglycemic activity followed by (b) and (a). HPLC was adopted for standardization of the extract (c) based on evaluation of the major saponin christinin-A which was used as marker. The detection limit was 9.45 mg/ml for Christinin-A. Extracts (a), (b) and (c) were separately formulated in soft (S) and hard (H) gelatin capsules. Two different formulations (F1 and F2) were tried using different excipients suitable for oral drug delivery. Formula 1, used for soft gelatin capsules [(F1) Sa, Sb, Sc] Formula 2, used for hard gelatin capsules [(F2) - Ha, Hb, Hc]. The recovery rates of the samples of saponin were in the range 99.43-101.86% at 200, 800 microg/ml and 1200 microg/ml. Saponin release rates from different formulae were carried out using dissolution tester USP XXIV. The highest release was obtained from formulation Sc. The release of the extracts followed diffusion mechanism. The selected formula Sc exhibited highest anti-diabetic activity (P < 0.01) on acute and long-term administration and highest saponin release. This formula (Sc) contained poly-oxyethylene (20) cetyl ether (BC-20TX), PEG 400, PEG 6000, purified water, meglyol 810, ascorbic acid and 200 mg of extract (c).

  11. Dynamics of Large-Scale Convective Onset in the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Powell, Scott Wayne

    The role of large-scale circulation anomalies in the convective onset of the Madden-Julian Oscillation (MJO) over the Indian Ocean during the Dynamics of the Madden-Julian Oscillation (DYNAMO) field campaign, conducted Oct. 2011--Feb. 2012, is explained using radar and rawinsonde observations, reanalysis, and regional model simulations. Convective onset was characterized by two episodic and rapid increases in the vertical growth of the cumuliform cloud population over the Indian Ocean: First, the areal coverage of moderately deep (~5 km) convection increased; about 1 week later, the areal coverage of deep (up to the tropopause) convection increased rapidly. Deep tropospheric wavenumber 1 anomalies in zonal wind and vertical velocity circumnavigated the tropics repeatedly during DYNAMO. MJO convective onset occurred when the upward branch of this wavenumber 1 circulation arrived over the Indian Ocean because a reduction in large-scale subsidence cooled the troposphere and steepened the lapse rate below 500 hPa. This made the environment more conducive to development of moderately deep convection. The moderately deep convection moistened the environment during week-long transition periods by transporting moisture vertically from the boundary layer to the free troposphere and detraining it into the clear-air environment, particularly between 650--850 mb. Regional cloud-permitting model simulations of convection during MJO onsets reproduced the distinct transition periods. The modeling results confirmed that rapid cooling of the environment enhanced the areal coverage of, and thus total vertical transport of water within, moderately deep convection at the beginning of transition periods. Evaporation of cloud condensate via entrainment or dissipation of clouds was directly responsible for environmental moistening. Cooling of the climatologically stable layer between 700--850 mb was particularly important because it allowed a greater number of cumulus elements growing

  12. Zonal scales of Madden-Julian Oscillation in model experiments with and without continents

    NASA Astrophysics Data System (ADS)

    Das, Surajit; Sengupta, Debasis; Chakraborty, Arindam; Sukhatme, Jai; Murtugudde, Raghu

    2015-04-01

    The low-frequency eastward propagating Madden-Julian Oscillation (MJO) impacts weather and climate around the globe. MJO has zonal wavenumber 1-5, but the reason why these characteristic spatial scales arise are not clearly understood. We use the aquaplanet version of the Community Atmospheric Model (CAM-5), with perpetual spring equinox forcing and zonally symmetric sea surface temperature (SST), to study tropical intraseasonal oscillations (ISO), including MJO. In the first two experiments, we specify zonally symmetric SST profiles that mimic observed climatological July and January conditions. In the January SST simulation, we find a zonal wavenumber 1 mode with dominant period of 60 days, moving east at about 6 m/s. This mode, which resembles the Madden-Julian Oscillation (MJO), is absent when the model was forced by July SST. This shows the importance of the meridional gradient of SST on generation of MJO in this model. For further investigation of the influence of tropical SST on ISO and convectively coupled equatorial waves (CCEW), we conduct experiments with idealized symmetric SST profiles having different widths of warm ocean centered at the equator. When the latitudinal extent of warm SST is comparable to or larger than the equatorial Rossby radius, we find a dominant low frequency (50-80 days) eastward mode that resembles the MJO, as in the January SST experiment. Our study shows that wider, meridionally symmetric SST profiles are necessary for a stronger MJO-like mode. In contrast to many other aquaplanet studies, a significant finding is the existence of westward propagating 30-120 day Rossby waves with zonal wavenumber 1 to 3, and meridional wavenumber 1, 3 and 5. However, in all the aquaplanet simulations, the MJO variance occurs at zonal wavenumber one. To understand the role of land-sea distribution on zonal wavenumber of MJO, we perform a third set of experiments by introducing continents with realistic orography in the model. These experiments

  13. Modulation of Global Fire Probability by the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Zhang, Chidong

    2014-05-01

    The Madden-Julian Oscillation (MJO) is an atmospheric phenomenon that dominates the subseasonal (20 - 90 day) variability in the tropics. Its main feature includes an eastward moving large-scale center of deep convection from the Indian Ocean to the western and central Pacific Ocean. As its convection center moves eastward, the MJO exerts influences on many weather, climate and other phenomena in the Earth system, both in the tropics and extratropics. Satellite-based global fire data sets (MODIS, ATSR) have revealed that probability of fire in many regions of the world undergoes systematic changes through the life cycle of the MJO. For example, when MJO convection center is located over the Indian Ocean, fire probability is anomalous high in West Africa and northern Australia, but anomalously low in central Africa, the Amazonia, and Alaska. In the tropics, such changes are directly related to rainfall fluctuations of the MJO itself in the eastern hemisphere, and are consequences of atmospheric equatorial waves excited by MJO convection that propagate into the western hemisphere. In the extratropics, the changes are mainly due to teleconnection patterns in the atmosphere established by anomalous convection of the MJO. Simultaneous perturbations in rainfall, surface temperature and humidity suggest that no single meteorological variable can fully explain the modulation of fire probability by the MJO. Current efforts are being made to related wild fire to lightening frequencies, which are also modulated by the MJO.

  14. Hydrological Balance of High Mountainous Lake on Karstified Plateau of Julian Alps - Slovenia

    NASA Astrophysics Data System (ADS)

    Rman, N.; Ratej, J.; Brenčič, M.

    2009-04-01

    High mountainous lake Jezero na Planini pri Jezeru is located in the Triglav National Park at the Julian Alps in Slovenia. It fills a depression covered with Pleistocene fine-grained sediments and glacial till on intensively karstified plateau. In the past many investigations were performed on the lake and its surrounding without knowledge about hydrological balance. The goal of the present study is to fill this gap. Hydrological water balance model of the discussed area was constructed based on results of hydrogeological mapping, soil analyses, infiltration capacity measurements with unsaturated hydraulic parameter analyses, and hydrological modelling. Modelling for soil water balance in the lake catchment area was done with analytical computer program Visual HELP. Free-water-surface evaporation and lake storage calculations were based on other analytical models. A number of different scenarios of possible catchment areas were studied in order to describe the amount of water circulation in the open system of the lake. Scenario that implies that the catchment area is bounded to the nearest vicinity of the lake was proved to be the most realistic. Using the water balance, the paper shows that mountainous lake formed on small accumulation of low permeable sediments on highly permeable and karstified limestone can be self-efficient as precipitation on the lake surface and, moreover, surface runoff from the nearest slopes are sufficient to sustain its volume.

  15. Essential-Oil Variability in Natural Populations of Pinus mugo Turra from the Julian Alps.

    PubMed

    Bojović, Srdjan; Jurc, Maja; Ristić, Mihailo; Popović, Zorica; Matić, Rada; Vidaković, Vera; Stefanović, Milena; Jurc, Dušan

    2016-02-01

    The composition and variability of the terpenes and their derivatives isolated from the needles of a representative pool of 114 adult trees originating from four natural populations of dwarf mountain pine (Pinus mugo Turra) from the Julian Alps were investigated by GC-FID and GC/MS analyses. In total, 54 of the 57 detected essential-oil components were identified. Among the different compound classes present in the essential oils, the chief constituents belonged to the monoterpenes, comprising an average content of 79.67% of the total oil composition (74.80% of monoterpene hydrocarbons and 4.87% of oxygenated monoterpenes). Sesquiterpenes were present in smaller amounts (average content of 19.02%), out of which 16.39% were sesquiterpene hydrocarbons and 2.62% oxygenated sesquiterpenes. The most abundant components in the needle essential oils were the monoterpenes δ-car-3-ene, β-phellandrene, α-pinene, β-myrcene, and β-pinene and the sesquiterpene β-caryophyllene. From the total data set of 57 detected compounds, 40 were selected for principal-component analysis (PCA), discriminant analysis (DA), and cluster analysis (CA). The overlap tendency of the four populations suggested by PCA, was as well observed by DA. CA also demonstrated similarity among the populations, which was the highest between Populations I and II.

  16. Respective roles of shallow convection and stratiform rainfall on the simulation of Madden-Julian Oscillation.

    SciTech Connect

    Fu, Joshua Xiouhua [IPRC Wang, Bin [IPRC&DM Yeh, Hsi-Chyi

    2010-03-15

    Respective Roles of Shallow Convection and Stratiform Rainfall on the Simulation of Madden Julian Oscillation Joshua Xiouhua Fu IPRC, SOEST, University of Hawaii The IPRC/UH Hybrid-coupled GCM (HcGCM), which combined ECHAM-4 AGCM with UH intermediate ocean model, produces robust Tropical Intra-Seasonal Oscillations including the boreal-winter MJO and boreal-summer Monsoon Intra-Seasonal Oscillation. In this study, two sets of sensitivity experiments (i.e., short-term retrospective forecast of one MJO event observed during TOGA COARE and long-term free integrations) have been carried out to understand the respective roles of shallow-convection and stratiform rainfall on the simulations and predictions of the MJO. Major findings are summarized as following: Shallow-convection ahead of MJO deep convection moistens the lower-troposphere and preconditions the movement of the MJO. Present study shows that this process is very important to the eastward propagating speed of the MJO. A significant fraction of stratiform rainfall (~30%; stratiform part vs. total rainfall) is needed for ECHAM-4 to have a robust MJO. The above findings suggest that in addition to deep convection, shallow convection and stratiform rainfall needs to be well represented in conventional GCMs to ensure a robust model MJO.

  17. A general theoretical framework for understanding essential dynamics of Madden-Julian oscillation

    NASA Astrophysics Data System (ADS)

    Wang, Bin; Chen, Guosen

    2016-11-01

    Motivated by observed structure of Madden-Julian oscillation (MJO), a general theoretical model framework is advanced for understanding fundamental aspects of MJO dynamics. The model extends the Matsuno-Gill theory by incorporating (a) moisture feedback to precipitation, (b) a trio-interaction among equatorial waves, boundary layer (BL) dynamics, and precipitation, and (c) a simplified Betts-Miller (B-M) cumulus parameterization. The general model with B-M scheme yields a frictionally coupled dynamic moisture mode, which produces an equatorial planetary-scale, unstable system moving eastward slowly with coupled Kelvin-Rossby wave structure and BL moisture convergence leading major convection. The moisture feedback in B-M scheme reinforces the coupling between precipitation heating and Rossby waves and enhances the Rossby wave component in the MJO mode, thereby slowing down eastward propagation and resulting in a more realistic horizontal structure. It is, however, the BL frictional convergence feedback that couples equatorial Kelvin and Rossby waves with convective heating and selects a preferred eastward propagation. The eastward propagation speed in the model is inversely related to the relative intensity of the equatorial "Rossby" westerly versus "Kelvin" easterly associated with the MJO. The cumulus parameterization scheme may affect propagation speed through changing MJO horizontal structure. The SST or basic-state moist static energy has a fundamental control on MJO propagation speed and intensification/decay. Model sensitivity to BL and cumulus scheme parameters and ramifications of the model results to general circulation modeling are discussed.

  18. Optimal Initial Perturbations for Ensemble Prediction of the Madden-Julian Oscillation during Boreal Winter

    NASA Technical Reports Server (NTRS)

    Ham, Yoo-Geun; Schubert, Siegfried; Chang, Yehui

    2012-01-01

    An initialization strategy, tailored to the prediction of the Madden-Julian oscillation (MJO), is evaluated using the Goddard Earth Observing System Model, version 5 (GEOS-5), coupled general circulation model (CGCM). The approach is based on the empirical singular vectors (ESVs) of a reduced-space statistically determined linear approximation of the full nonlinear CGCM. The initial ESV, extracted using 10 years (1990-99) of boreal winter hindcast data, has zonal wind anomalies over the western Indian Ocean, while the final ESV (at a forecast lead time of 10 days) reflects a propagation of the zonal wind anomalies to the east over the Maritime Continent an evolution that is characteristic of the MJO. A new set of ensemble hindcasts are produced for the boreal winter season from 1990 to 1999 in which the leading ESV provides the initial perturbations. The results are compared with those from a set of control hindcasts generated using random perturbations. It is shown that the ESV-based predictions have a systematically higher bivariate correlation skill in predicting the MJO compared to those using the random perturbations. Furthermore, the improvement in the skill depends on the phase of the MJO. The ESV is particularly effective in increasing the forecast skill during those phases of the MJO in which the control has low skill (with correlations increasing by as much as 0.2 at 20 25-day lead times), as well as during those times in which the MJO is weak.

  19. Potential spawning habitat for lake trout on Julian's Reef, Lake Michigan

    USGS Publications Warehouse

    Edsall, Thomas A.; Kennedy, Gregory W.

    1996-01-01

    Julian's Reef is an historical spawning ground for lake trout (Salvelinus namaycush) in southwestern Lake Michigan. It is a designated lake trout refuge and is the focus of lake trout restoration efforts in Illinois waters of the lake. We studied the reef to determine its potential as spawning habitat for stocked lake trout. We used side-scan sonar and a remotely operated vehicle equipped with a video camera to survey and map 156 ha of lake bed on the southeast portion of the reef, where an earlier study revealed the presence of loose-rock substrate potentially suitable for use by spawning lake trout. Our survey showed that the substrate on the reef that most closely resembled that described in the literature as suitable for spawning by stocked lake trout in the Great Lakes was rubble patches with interstitial depths greater than 20 cm. These rubble patches occupied about 2 ha of the 13-ha expanse of bedrock and rubble substrate near the reef crest in the surveyed area. We estimated that these rubble patches, if fully used by spawning lake trout, could accommodate egg deposition by at least 1,300–3,300 2.7-kg females.

  20. Key processes for the eastward propagation of the Madden-Julian Oscillation based on multimodel simulations

    NASA Astrophysics Data System (ADS)

    Jiang, Xianan

    2017-01-01

    As a prominent climate variability mode with widespread influences on global weather extremes, the Madden-Julian Oscillation (MJO) remains poorly represented in the latest generation of general circulation models (GCMs), with a particular challenge in simulating its eastward propagating convective signals. In this study, by analyzing multimodel simulations from a recent global MJO model evaluation project, an effort is made to identify key processes for the eastward propagation of the MJO through analyses of moisture entropy (ME) processes under a "moisture mode" framework for the MJO. The column-integrated horizontal ME advection is found to play a critical role for the eastward propagation of the MJO in both observations and good MJO models, with a primary contribution through advection of the lower tropospheric seasonal mean ME by the MJO anomalous circulations. By contrast, the horizontal ME advection effect for the eastward propagation is greatly underestimated in poor MJO GCMs, due to model deficiencies in simulating both the seasonal mean ME pattern and MJO circulations, leading to a largely stationary MJO mode in these GCMs. These results thus pinpoint an important guidance toward improved representation of the MJO in climate and weather forecast models. While this study mainly focuses on fundamental physics for the MJO propagation over the Indian Ocean, complex influences by the Maritime Continent on the MJO and also ME processes associated with the MJO over the western Pacific warrant further investigations.

  1. The Madden-Julian Oscillation and its Impact on Northern Hemisphere Weather Predictability during Wintertime

    NASA Technical Reports Server (NTRS)

    Jones, Charles; Waliser, Duane E.; Lau, K. M.; Stern, W.

    2003-01-01

    The Madden-Julian Oscillation (MJO) is known as the dominant mode of tropical intraseasonal variability and has an important role in the coupled-atmosphere system. This study used twin numerical model experiments to investigate the influence of the MJO activity on weather predictability in the midlatitudes of the Northern Hemisphere during boreal winter. The National Aeronautics and Space Administration (NASA) Goddard laboratory for the Atmospheres (GLA) general circulation model was first used in a 10-yr simulation with fixed climatological SSTs to generate a validation data set as well as to select initial conditions for active MJO periods and Null cases. Two perturbation numerical experiments were performed for the 75 cases selected [(4 MJO phases + Null phase) _ 15 initial conditions in each]. For each alternative initial condition, the model was integrated for 90 days. Mean anomaly correlations in the midlatitudes of the Northern Hemisphere (2O deg N_60 deg.N) and standardized root-mean-square errors were computed to validate forecasts and control run. The analyses of 500-hPa geopotential height, 200-hPa Streamfunction and 850-hPa zonal wind component systematically show larger predictability during periods of active MJO as opposed to quiescent episodes of the oscillation.

  2. Possible Influences of the Madden-Julian Oscillation on Global Fire

    NASA Astrophysics Data System (ADS)

    Zhang, Chidong; McKinney, Matthew; Lasslop, Gitta; Kreidenweis, Sonia

    2015-04-01

    Possible influences of the Madden-Julian Oscillation (MJO) on global wildfire are investigated. Glob fire potential and activities are measured by the Nesterov Index (NI), fire danger index (FDI), fire number (FN), and burned area (BA) from the output of a process-based fire regime model (SPITFIRE). The MJO is described using the Real-Time Multivariate MJO (RMM) index. Eight MJO phases defined by the RMM index correspond to different longitudinal locations of positive and negative anomalies in its rainfall as it propagates eastward from the Indian to Pacific Oceans. Phase 0 is defined as periods without MJO signals. Potential influences of the MJO on global fire are demonstrated as the differences of the four fire parameters between each of the eight MJO phases and phase 0. Statistically significant (at the 95% confidence level) differences are identified in various MJO phases in the following regions: tropical Africa, the Amazonia, Siberia, western Russia, and North America. Potential implications and caveats of these signals are discussed.

  3. The boreal winter Madden-Julian Oscillation's influence on summertime precipitation in the greater Caribbean

    NASA Astrophysics Data System (ADS)

    Curtis, Scott; Gamble, Douglas W.

    2016-07-01

    Precipitation totals in the greater Caribbean are known to be affected by interannual variability. In particular, dry conditions in the spring-summer have been physically linked to the positive phase of North Atlantic Oscillation (NAO) in the literature. In this study, it was found through regression analysis that an active Madden-Julian Oscillation (MJO) in winter geographically focused over the Maritime Continent contributes to a positive NAO in March via the generation of Rossby waves in the Northern Hemisphere. Specifically, a negative Pacific-North American pattern develops in the winter and transitions to an Atlantic pattern in spring. The positive NAO is a transient feature of this evolving wave train, but a center of significant positive 200 hPa geopotential heights is entrenched over the southeast U.S. throughout the February to May time period and is manifested as high pressure at the surface. The southern flank of this system increases the speeds of the trade winds and leads to a cooling of the Caribbean sea surface temperatures and, thus, convection suppression and reduced precipitation. Thus, this study advances our understanding of the climate of the greater Caribbean by using climate teleconnections to relate the MJO to rainfall in the region.

  4. Role of Longwave Cloud-Radiation Feedback in the Simulation of the Madden-Julian Oscillation

    NASA Technical Reports Server (NTRS)

    Kim, Daehyun; Ahn, Min-Seop; Kang, In-Sik; Del Genio, Anthony D.

    2015-01-01

    The role of the cloud-radiation interaction in the simulation of the Madden-Julian oscillation (MJO) is investigated. A special focus is on the enhancement of column-integrated diabatic heating due to the greenhouse effects of clouds and moisture in the region of anomalous convection. The degree of this enhancement, the greenhouse enhancement factor (GEF), is measured at different precipitation anomaly regimes as the negative ratio of anomalous outgoing longwave radiation to anomalous precipitation. Observations show that the GEF varies significantly with precipitation anomaly and with the MJO cycle. The greenhouse enhancement is greater in weak precipitation anomaly regimes and its effectiveness decreases monotonically with increasing precipitation anomaly. The GEF also amplifies locally when convection is strengthened in association with the MJO, especially in the weak precipitation anomaly regime (less than 5 mm day(exp -1)). A robust statistical relationship is found among CMIP5 climate model simulations between the GEF and the MJO simulation fidelity. Models that simulate a stronger MJO also simulate a greater GEF, especially in the weak precipitation anomaly regime (less than 5 mm day(exp -1)). Models with a greater GEF in the strong precipitation anomaly regime (greater than 30 mm day(-1)) represent a slightly slower MJO propagation speed. Many models that lack the MJO underestimate the GEF in general and in particular in the weak precipitation anomaly regime. The results herein highlight that the cloud-radiation interaction is a crucial process for climate models to correctly represent the MJO.

  5. Theory and evidence that the Madden-Julian Oscillation is a dispersive, convectively coupled moisture wave

    NASA Astrophysics Data System (ADS)

    Adames, Á. F.; Kim, D.

    2015-12-01

    A linear wave theory for the Madden-Julian Oscillation (MJO), previously developed by Sobel and Maloney, is extended upon in this study. Using column-integrated moisture as a prognostic variable, a dispersion relation is derived that solely depends on the convective adjustment timescale, a parameter that indicates the amount of moisture available for propagation and the distance that free Kelvin waves are able to travel in the presence of dissipation. The dispersion relation adequately describes the MJO's signal in the wavenumber-frequency spectrum and defines the MJO as a dispersive equatorial moist wave with a westward group velocity. On the basis of linear regression analysis of the time varying field of outgoing longwave radiation, it is estimated that that the MJO's group velocity is 2/5 as large as its eastward phase speed. This dispersion is the result of the anomalous winds in the Kelvin and Rossby wave responses modulating the mean distribution of moisture such that the moisture anomaly propagates eastward while wave energy propagates westward. Additionally, it is found that cloud-radiation feedbacks cause growth of the moist wave to be largest at the planetary scales. It is hypothesized that this scale selection mechanism is the result of upper-level cloudiness exhibiting a larger zonal extent than precipitation. The longwave radiative heating from these upper-level clouds causes an expansion of the region of ascent under weak-temperature gradient balance.

  6. Madden-Julian Oscillation and sea level: Local and remote forcing

    NASA Astrophysics Data System (ADS)

    Oliver, E. C. J.; Thompson, K. R.

    2010-01-01

    The Madden-Julian Oscillation (MJO) is the dominant mode of atmospheric variability in the tropical atmosphere on intraseasonal time scales (i.e., weeks to seasons). This study examines the connection between the MJO and global sea level measured by altimeters over the last 17 years. We first identify regions exhibiting a significant (both statistical and practical) relationship between sea level and the MJO. The first region consists of the equatorial Pacific and western coastal zones of North and South America. Consistent with previous studies, we identify wind-driven equatorially trapped Kelvin waves that propagate eastward along the equatorial Pacific and then transform into coastal trapped waves that propagate poleward along the western coasts of North and South America. The second region includes the shallow waters of the Gulf of Carpentaria (off Australia's north coast) and the adjacent Arafura and Timor seas. Setup by onshore winds is shown to be the dominant physical process. Finally, the northeastern Indian Ocean is shown to be a complex region involving a combination of equatorially trapped Kelvin waves, coastal trapped waves, and westward-propagating Rossby waves exhibiting characteristics of both local and remote forcing. The implications of the results for deep and coastal ocean forecasting are discussed.

  7. Sea Surface Temperature Coupling to Madden-Julian Oscillations over the Indonesian Maritime Continent

    NASA Astrophysics Data System (ADS)

    Napitu, A. M.; Gordon, A. L.; Pujiana, K.

    2014-12-01

    The intraseasonal SST characteristics within the Indonesian Seas and their responses to the Madden-Julian Oscillations [MJO] are examined through analyses of observed and reanalysis datasets. Intraseasonal variation accounts for about 30% of SST variability, with the strongest signature is observed in Banda and Timor seas. The MJO signature in SST is evident in the form of energy peak at 35-45 days, amplification during the Northwest Monsoon (boreal winter), and eastward propagation. SST responds to sea-air heat flux associated with MJO with net heat flux into the ocean (atmosphere) characterizing the suppressed (active) phase of MJO. The influence of MJO on Banda Sea SST is greatest during La Niña periods, which are favorable for deeper thermocline conditions, which diminish the role of ocean processes driving vertical heat transfer between subsurface and surface layers. Diminished influence of ocean processes results in dominance of surface heat fluxes associated with MJO in governing intraseasonal SST variability. During El Niño, the role of ocean processes is favorable to mediate heat transfer between lower and upper layer of the ocean surface as thermocline is shallower. The ocean component heat fluxes then compete with MJO forced heat fluxes in governing SST variability as indicated by less pronounced eastward propagation.

  8. Past- and present-day Madden-Julian Oscillation in CNRM-CM5

    NASA Astrophysics Data System (ADS)

    Song, Eun-Ji; Seo, Kyong-Hwan

    2016-04-01

    Madden-Julian Oscillation (MJO) in the past (nineteenth century) and present day (twentieth century) is examined using preindustrial and historical experiments of Centre National de Recherches Météorologiques-Coupled Models, version 5 (CNRM-CM5) in Coupled Model Intercomparison Project Phase 5 (CMIP5). The present-day MJO is stronger than the past MJO by 33% and it is ~10% more frequent. In particular, the MJO phases 4-7 signifying deep convection situated over the Maritime continent and western Pacific (WP) are considerably enhanced. These changes are due mainly to greenhouse gas forcing with little impact from nature forcing. Dynamical mechanisms for this change are investigated. A peculiar strengthening of MJO over WP comes from increased basic-state sea surface temperature (SST) over the Central Pacific (CP) and EP. The increase in precipitation over WP results from both the response to enhanced SST over CP and the inverted Walker circulation induced by the EP and CP SST increase. The latter causes a pair of anticyclonic Rossby waves straddling the equator, leading to moisture convergence over WP.

  9. The Madden-Julian oscillation and its seasonal impact on mid-latitude weather predictability

    NASA Astrophysics Data System (ADS)

    Kadota, Minoru

    Seasonal influence of the the Madden-Julian oscillation(MJO) activity on weather predictability in the midlatitudes of the Northern Hemisphere and the Southern Hemisphere is investigated. This is accomplished by analyzing a T42 global atmospheric model with an imbedded model of the MJO derived from the observations. The imbedded model uses observed outgoing longwave radiation data from NCEP. Therefore novel features of the present study include a numerical model with realistic representation of the MJO, very large prediction ensembles, and information theoretic techniques to measure potential predictability of midlatitude. Results show that the MJO appears to be potentially able to increase mid-latitude predictability by several days in three important mid-latitude regions. The effect is more pronounced in summer hemisphere than winter hemisphere. The effect is much smaller during winter hemisphere for all three regions. One reason for this difference is that the signal to noise ratio of the remote MJO response is larger during summer. Results also indicate that regions closer geographically to the MJO centre of action around the maritime continent might have bigger effect. Our results also suggest that there appears a strong case for improving the representation of the MJO convection in general circulation models.

  10. Heavy-metal contamination of Crassostrea virginica and associated sediments of the Corpus Christi Bay system, Texas

    USGS Publications Warehouse

    Harrison, G.; Martin, E.A.

    1982-01-01

    In a preliminary survey, Crassostrea virginica from areas of the Corpus Christi Bay system of Texas show significant concentrations of Cd, Cu, Pb, and Zn in their tissues and shells; concentrations of these same metals in associated sediments are also high in certain areas of the bay system. Zn and Cd concentrations in tissue show a high negative correlation to each other, whereas Zn and Pb in tissue and shell show a high positive correlation to one another. Sediment contents of Pb and Zn best reflect tissue values of the heavy metals; sediment concentrations of Cd and Cu show a poor inverse correlation to tissue concentrations. Some possible factors influencing these correlations are suspended-sediment type, physiological changes, water quality, and Ca intake.

  11. Distribution and isotopic composition of uranium in lower Nueces River, Nueces Bay and Corpus Christi Bay, Texas

    USGS Publications Warehouse

    Holmes, Charles W.; Slade, Elizabeth Ann

    1972-01-01

    The uranium concentration and isotopic composition of water and suspended sediment from the Nueces River, Nueces Bay and Corpus Christi Bay were determined by alpha-spectroscopy. The average dissolved uranium concentration and radioactivity ratio (U234/U238) of Nueces River water were determined to be 2.44 µg/1 and 1.15 respectively. Water from a tributary of the Nueces River, Cayamon Creek, was found to contain an average dissolved uranium concentration of 42.8 µg/1 with an isotopic radioactivity ratio of 1.56. Close inspection of the lateral concentration and isotopic activity ratio of uranium revealed an increase below the confluence of Cayamon Creek with the Nueces River. A model was derived based on equations used in isotopic dilution analysis, which predicts these increases within analytical error. This model may be useful in future studies to locate anomalous uranium within the hydrologic environment.

  12. The effects of opening an artificial tidal inlet on hydrography and estuarine macrofauna in Corpus Christi, Texas.

    PubMed

    Palmer, Terence A; Montagna, Paul A; Kalke, Richard D

    2013-07-01

    Packery Channel is part of a complex of storm washover channels which, before 1912, have opened intermittently, linking the Laguna Madre and Corpus Christi Bay, Texas with the Gulf of Mexico. On 21 July 2005, with the assistance of Hurricane Emily, Packery Channel was prematurely opened to the Gulf of Mexico, months before construction of a dredged channel was scheduled to be completed. A before-versus-after, control-versus-impact (BACI) design was used to assess the effects of reopening Packery Channel on water quality and estuarine macrofauna in Mollie Beattie Coastal Habitat Community (MBCHC), Corpus Christi Bay. Two deep (approximately 1 m below m.s.l.) and two shallow (approximately 0.2 m below m.s.l.) stations were sampled monthly for physical and biological characteristics at both control and impact sites between November 2003 and March 2009. The opening of Packery Channel created a unique situation where salinities decreased after the channel opening by ameliorating hypersalinity in Laguna Madre rather than increasing salinities as would occur in most estuaries worldwide. Salinity also fluctuated in a diurnal pattern after the opening of Packery Channel. Apart from salinity, Packery Channel has caused little hydrographic change in MBCHC since opening in July 2005. There was little effect on the macrofaunal community composition. There was a greater difference in community composition between deep and shallow stations than between either before and after or control and impact sites. There have been no significant changes in abundance, biomass, or N1 diversity caused by the opening of Packery Channel.

  13. Analysis of extreme rainfall in South America associated with Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Leutwiler Silva, Elaine; Siqueira Silva, Maria Elisa

    2014-05-01

    Since the early Twentieth Century, the scientific community has recorded the observation of atmospheric and oceanic oscillations related to climatic behavior in remote areas with influence on intraseasonal, interannual and decadal scales, as indicated by [Walker, (1924); Bjerkness (1969); Gutzler and Wallace (1981); Rogers and Van Loon (1978, 1979)]. On the intraseasonal scale, Madden-Julian Oscillation (MJO) plays a key role in the modulation of rainfall in the tropics and subtropics (Kayano et al., 2009) being characterized by an east shift in a zonal large-scale and thermally direct cell on the Pacific Ocean. This oscillation was first detected in the work of Madden and Julian (1971, 1972) through the application of spectral analysis on daily radiosonde data provided by the National Center for Atmospheric Research (NCAR), for the stations at Canton island. The analysis allowed the detection and documentation of oscillations with periods from 40 to 50 days with strong associations between the surface pressure, zonal wind and temperature at different atmospheric levels. Although Souza and Ambrizzi (2006) indicate that South America (SA) has its convective activity altered due to the passage of the MJO, at the present moment, the existing models of climate prediction have not been able to correctly reproduce the propagation of the MJO. This study aims to analyze the periods of occurrence of extreme precipitation and drought in SA associated with OMJ and check the ability of Regional Circulation Model (RegCM4) to simulate this climate variability both diagnostically and prognostically. Daily rainfall data compiled by Liebmann and Allured (2005) will be used for the period 1978-2005 for the detection of MJO influence on SA precipitation. The analysis of atmospheric fields (wind at 200 and 850 hPa and omega at 500 and 850 hPa) of the Reanalysis I data set (Kalnay, 1996) obtained from the Physical Sciences Division (PSD) will be performed in order to verify the

  14. Detail isotopic stratigraphy of snowpack - case study from Julian Alps (Slovenia)

    NASA Astrophysics Data System (ADS)

    Vreča, P.; Brenčič, M.; Sinjur, I.; Sokratov, S.

    2012-04-01

    In temperate humid catchments the storage of precipitation in snowpack, and the subsequent melting, both highly variable in space and time, substantially impacts the water cycle. Recent climate warming and changes in atmospheric circulation patterns have resulted in reductions in the duration of the snow cover season, the amount of water stored in the snowpack, as well as a widespread trend toward earlier melt. Comparison of water balance for periods 1961-90 and 1971-2000 showed that in Slovenia average precipitation amount remained the same in both periods while runoff decreased and the evaporation increased recently. The area of Julian Alps (NW Slovenia) represents the upper catchment area of river Sava. The area is locally characterised as one with the highest annual precipitation amount in Europe, rapid runoffs and low evaporation. Snow cover is regular, starts to accumulate in late autumn and lasts more than 100 days, at the upper tree line usually more than 150 days. Due to positive air temperature trend snow cover period is changing and consequently the discharge regime is affected. Spatial and temporal variability of snow, as well as snow cover contribution to the water balance in Julian Alps remains poorly investigated. Isotopes of O and H have been used to study snow deposition and the subsequent alteration of snowpack and its influence on runoff. Despite their potential, environmental isotopes were only rarely used in investigations of water cycle in mountain areas of Slovenia in the past. To improve the knowledge on snowpack isotope characteristics and processes in it, and consequently to enable better understanding of water balance with emphasize on recharge of important Slovene aquifers, in 2011 at selected site in the area of Triglav National Park (Planina Javornik) the first isotope research of snowpack has been started. We performed detail sampling of snowpack at two locations with different canopy structures (e.g. clearing and forest stand

  15. Modulation of the Convectively Coupled Kelvin Waves by the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Guo, Y.; Jiang, X.; Waliser, D. E.

    2013-12-01

    As one of the major tropical wave modes, the convectively-coupled equatorial Kelvin wave (CCKW) plays a critical role in tropical climate / weather variability. CCKW activity exhibits strong variation on both seasonal and intraseasonal time scales. In this study, evidence of the strong modulation of the CCKW activity by the Madden-Julian Oscillation (MJO) will be presented, with a particular focus over South America and tropical Atlantic region. The primary modulation of CCKWs over this region, as noted in anomalous fields of rainfall as well as vertical profiles of wind, moisture and temperature, is found to be a modulation of wave activity - namely amplitude, with secondary effects on vertical structure, and very little impact on wavenumber. CCKW activity is enhanced during MJO phases 8, 1, and 2, and damped during MJO phases 4, 5, and 6. Further analyses reveal that the strong modulation of the MJO on the CCKW activity could be largely through two factors, namely, the vertical zonal wind shear and the lower-middle troposphere specific humidity. The CCKW activity tends to be enhanced during MJO phases when the westward vertical wind shear and positive lower to mid-troposphere moisture anomalies are evident, and vice versa. These two physical processes associated with the MJO are found to have positively (negatively) reinforcing influences in the CCKW activity in phase 1 (4, and 5), while counteracting influences in phases 2, 3, 6, 7, and 8, leading to the observed MJO cycle of the CCKW activity anomalies in the study region. The results presented in this study may have important implications for extended-range prediction of tropical wave activity, and possibly initiation of the MJO further downstream in the Indian Ocean.

  16. Late Quaternary glaciation of the Upper Soca River Region (Southern Julian Alps, NW Slovenia)

    USGS Publications Warehouse

    Bavec, Milos; Tulaczyk, Slawek M.; Mahan, Shannon; Stock, Gregory M.

    2004-01-01

    Extent of Late Quaternary glaciers in the Upper Soc??a River Region (Southern Julian Alps, SE Europe) has been analyzed using a combination of geological mapping, glaciological modeling, and sediment dating (radiocarbon, U/Th series and Infrared Stimulated Luminescence-IRSL). Field investigations focused mainly on relatively well preserved Quaternary sequences in the Bovec Basin, an intramontane basin located SW of the Mediterranean/Black Sea divide and surrounded by mountain peaks reaching from approximately 2100 up to 2587 m a.s.l. Within the Basin we recognized two Late Quaternary sedimentary assemblages, which consist of the same facies association of diamictons, laminated lacustrine deposits and sorted fluvial sediments. Radiocarbon dating of the upper part of the lake sediments sequence (between 12790??85 and 5885??60 14C years b.p.) indicates that the younger sedimentary assemblage was deposited during the last glacial maximum and through early Holocene (Marine Isotope Stage 21, MIS 2-1). Sediment ages obtained for the older assemblage with U/Th and IRSL techniques (between 154.74??22.88 and 129.93??7.90 ka b.p. for selected samples) have large errors but both methods yield results consistent with deposition during the penultimate glacial-interglacial transition (MIS 6-5). Based on analyses of field data combined with glaciological modeling, we argue that both sediment complexes formed due to high sediment productivity spurred by paraglacial conditions with glaciers present in the uplands around the Bovec Basin but not extending down to the basin floor. Our study shows that the extent and intensity of direct glacial sedimentation by Late Quaternary glaciers in the region was previously significantly overestimated. ?? 2004 Elsevier B.V. All rights reserved.

  17. Influence of the Madden Julian Oscillation on precipitation and surface air temperature in South America

    NASA Astrophysics Data System (ADS)

    Alvarez, Mariano S.; Vera, C. S.; Kiladis, G. N.; Liebmann, B.

    2016-01-01

    The regional influence of the Madden-Julian oscillation (MJO) on South America is described. Maps of probability of weekly-averaged rainfall exceeding the upper tercile were computed for all seasons and related statistically with the phase of the MJO as characterized by the Wheeler-Hendon real-time multivariate MJO (RMM) index and with the OLR MJO Index. The accompanying surface air temperature and circulation anomalies were also calculated. The influence of the MJO on regional scales along with their marked seasonal variations was documented. During December-February when the South American monsoon system is active, chances of enhanced rainfall are observed in southeastern South America (SESA) region mainly during RMM phases 3 and 4, accompanied by cold anomalies in the extratropics, while enhanced rainfall in the South Atlantic Convergence Zone (SACZ) region is observed in phases 8 and 1. The SESA (SACZ) signal is characterized by upper-level convergence (divergence) over tropical South America and a cyclonic (anticyclonic) anomaly near the southern tip of the continent. Impacts during March-May are similar, but attenuated in the extratropics. Conversely, in June-November, reduced rainfall and cold anomalies are observed near the coast of the SACZ region during phases 4 and 5, favored by upper-level convergence over tropical South America and an anticyclonic anomaly over southern South America. In September-November, enhanced rainfall and upper-level divergence are observed in the SACZ region during phases 7 and 8. These signals are generated primarily through the propagation of Rossby wave energy generated in the region of anomalous heating associated with the MJO.

  18. Occurrence of Extreme Precipitation Events in California and Relationships with the Madden-Julian Oscillation.

    NASA Astrophysics Data System (ADS)

    Jones, Charles

    2000-10-01

    California receives most of the annual precipitation during the boreal winter season. Additionally, large spatial and temporal variations in the total rainfall amounts are observed. This study investigates the occurrence of extreme precipitation events in California and the modulation by the Madden-Julian oscillation (MJO). Three questions are investigated. 1) Are extreme precipitation events in California more likely to occur during active MJO than inactive periods? 2) In what phase of the MJO life cycle are extreme events more likely? 3) Are interannual variations in the frequency of extreme events in California related to interannual variations of the MJO?Daily totals derived from gridded hourly station data are used to define extreme precipitation events from January 1958 to December 1996. Outgoing longwave radiation from polar orbiting satellites (1979-96) and zonal component of the wind at 200 hPa and 850 hPa from the National Centers for Environmental Prediction-National Center for Atmospheric Research reanalysis (1958-96) are used to describe the life cycle of the oscillation and its interannual variability. The results indicate that the frequency of extreme events are more common when tropical activity associated with the MJO is high, as opposed to periods of quiescent phases of the oscillation. Second, a slight preference for a higher number of events is observed when convective anomalies are located in the Indian Ocean. In this situation, low-level westerly and easterly wind anomalies are observed over the Indian and western Pacific Oceans, respectively. The analysis of the interannual variability in the amplitude of the MJO and the occurrence of extreme events over California indicates no direct and systematic relationships with the number of extreme events.

  19. Madden-Julian Oscillation analog and intraseasonal variability in a multicloud model above the equator.

    PubMed

    Majda, Andrew J; Stechmann, Samuel N; Khouider, Boualem

    2007-06-12

    The Madden-Julian Oscillation (MJO) is the dominant component of tropical intraseasonal variability, and a theory explaining its structure and successful numerical simulation remains a major challenge. A successful model for the MJO should have a propagation speed of 4-7 m/s predicted by theory; a wavenumber-2 or -3 structure for the planetary-scale, low-frequency envelope with distinct active and inactive phases of deep convection; an intermittent turbulent chaotic multiscale structure within the planetary envelope involving embedded westward- and eastward-propagating deep convection events; and qualitative features of the low-frequency envelope from the observational record regarding, e.g., its zonal flow structure and heating. Here, such an MJO analog is produced by using the recent multicloud model of Khouider and Majda in an appropriate intraseasonal parameter regime for flows above the equator so that rotation is ignored. Key features of the multicloud model are (i) systematic low-level moisture convergence with retained conservation of vertically integrated moist static energy, and (ii) the use of three cumulus cloud types (congestus, stratiform, and deep convective) together with their differing vertical heating structures. Besides all of the above structure in the MJO analog waves, there are accurate predictions of the phase speed from linear theory and transitions from weak, regular MJO analog waves to strong, multiscale MJO analog waves as climatological parameters vary. With all of this structure in a simplified context, these models should be useful for MJO predictability studies in a fashion akin to the Lorenz 96 model for the midlatitude atmosphere.

  20. Links Between the Madden-Julian Oscillation and Severe Convective Storms in the U.S.

    NASA Astrophysics Data System (ADS)

    Barrett, B.

    2015-12-01

    Recent research has shown a tendency for severe convective storms to vary intraseasonally, including by phase of the Madden-Julian Oscillation (MJO). The MJO is the leading mode of atmospheric intraseasonal variability and is characterized by large regions (1000-5000 km) of anomalous convective activity that generally propagate eastward along the equator. Anomalous upper-troposphere heating associated with this convection generates poleward-propagating Rossby waves that interact with the preexisting extratropical circulation. The projection of this interaction onto the synoptic scale - via the favoring of troughs and ridges at certain positions - is the hypothesized mechanism by which the MJO modulates severe convection. However, one unexplored aspect of this modulation is the extent to which severe convection in winter and early-spring months, especially Jan-Mar, may be influenced by different phases of the MJO. While climatologically rarer than events later in spring, severe thunderstorms in winter and early spring still have potential to be high-impact weather events, especially as they often occur in populated areas of the southeast U.S. that have shown more vulnerability than other regions such as the southern or central plains. Results from other studies (not necessarily focused on the question of severe convective storms) have indicated statistically significant modulation of upper- and mid-tropospheric circulation (from 200 hPa to 700 hPa), surface temperature, and sea level pressure. Thus, it is possible that the MJO's influence also extends to severe storms, as these are ingredients known to affect the likelihood of convective activity in the U.S. Using a methodology similar to other recent MJO studies, the impacts of the MJO on tornado, hail, and wind activity from Jan-Mar will be tested as part of this larger project to understand intraseasonal variability of severe storms.

  1. Thermodynamics in the Suppressed Phase of the Madden-Julian Oscillation Using a Multiplatform Strategy

    NASA Technical Reports Server (NTRS)

    Roberts, J. Brent; Robertson, Franklin R.; Clayson, Carol Anne; Taylor, Patrick

    2014-01-01

    The Madden-Julian Oscillation (MJO) represents a prominent mode of intraseasonal tropical variability. It is manifest by coherent large-scale changes in atmospheric circulation, convection, and thermodynamic processes. Preconditioning of the environment prior to the active phase of the MJO has been noted, but the balance of theorized mechanisms to accomplish this process remains unresolved. Further, there is a lack of consensus on the means by which primary initiation of an MJO event occurs. Observational and modeling efforts have recently been undertaken to advance our understanding of the physical underpinnings governing MJO development. However these intensive studies are often limited in space and/or time and are potentially subject to model deficiencies. Satellite observations, especially those providing vertical resolution of temperature and moisture, provide an opportunity to expand our knowledge of processes critical to MJO initiation and preconditioning. This work will provide an analysis of suppressed phase thermodynamics with an emphasis on the use of a complementary suite of satellite observations including AIRS/AMSU-A profiles, CERES radiative fluxes, and cloud properties observed by MODIS. Emphasis of this work will regard the distribution of cloud regimes, their radiative-convective effects, and their relationship to moist static energy during the recharge and suppressed stages of MJO initiation and eastward propagation. The analyses will make use of cloud regimes from MODIS observations to provide a compositing technique that enables the identification of systematic connections between different cloud regimes and the larger scale environment. Within these cloud regimes, the relationship between the associated cloud-radiative effects observed by CERES, vertically-resolved and vertically-integrated thermodynamics using AIRS/AMSU-A observations, and atmospheric boundary layer fluxes will be demonstrated.

  2. Simulations of Madden-Julian Oscillation in High Resolution Atmospheric General Circulation Model

    NASA Astrophysics Data System (ADS)

    Deng, Liping; Stenchikov, Georgiy; McCabe, Matthew; Bangalath, HamzaKunhu; Raj, Jerry; Osipov, Sergey

    2014-05-01

    The simulation of tropical signals, especially the Madden-Julian Oscillation (MJO), is one of the major deficiencies in current numerical models. The unrealistic features in the MJO simulations include the weak amplitude, more power at higher frequencies, displacement of the temporal and spatial distributions, eastward propagation speed being too fast, and a lack of coherent structure for the eastward propagation from the Indian Ocean to the Pacific (e.g., Slingo et al. 1996). While some improvement in simulating MJO variance and coherent eastward propagation has been attributed to model physics, model mean background state and air-sea interaction, studies have shown that the model resolution, especially for higher horizontal resolution, may play an important role in producing a more realistic simulation of MJO (e.g., Sperber et al. 2005). In this study, we employ unique high-resolution (25-km) simulations conducted using the Geophysical Fluid Dynamics Laboratory global High Resolution Atmospheric Model (HIRAM) to evaluate the MJO simulation against the European Center for Medium-range Weather Forecasts (ECMWF) Interim re-analysis (ERAI) dataset. We specifically focus on the ability of the model to represent the MJO related amplitude, spatial distribution, eastward propagation, and horizontal and vertical structures. Additionally, as the HIRAM output covers not only an historic period (1979-2012) but also future period (2012-2050), the impact of future climate change related to the MJO is illustrated. The possible changes in intensity and frequency of extreme weather and climate events (e.g., strong wind and heavy rainfall) in the western Pacific, the Indian Ocean and the Middle East North Africa (MENA) region are highlighted.

  3. Assessments of surface latent heat flux associated with the Madden-Julian Oscillation in reanalyses

    NASA Astrophysics Data System (ADS)

    Gao, Yingxia; Hsu, Pang-Chi; Hsu, Huang-Hsiung

    2016-09-01

    To understand the accuracy and uncertainty of surface latent heat flux (LHF) associated with the Madden-Julian Oscillation (MJO), the LHF from each of the six global reanalysis datasets is compared with LHF based on in situ data and the objectively analyzed air-sea flux (OAFlux), in terms of tropical intraseasonal variability. The reanalysis products used in this study include the European Centre for Medium-Range Weather Forecasts Interim Reanalysis (ERA-I), the Modern-Era Retrospective Analysis for Research and Applications (MERRA), three generations of reanalysis from the National Center for Environmental Prediction (NCEP R1, R2 and CFSR), and the twentieth century reanalysis (20CR). We find that the intraseasonal LHF of the reanalysis products agrees well with the OAFlux over the tropical oceans in terms of patterns, but there is a significant spread in amplitude among the reanalysis products. Both ERA-I and MERRA show smaller biases in the power spectral analysis, while the other reanalysis products (NCEP R1, NCEP R2, CFSR, and 20CR) tend to overestimate the intraseasonal LHF when compared with the TAO buoy products and OAFlux. The role of anomalous LHF in supporting the MJO convection identified by previous TAO buoy data studies is confirmed by the long-term global reanalyses. The feature of increasing LHF accompanied by growing MJO observed in the recent MJO field campaign in the central Indian Ocean (DYNAMO/CINDY2011) is also well captured by the reanalysis products. Among the reanalysis datasets, MERRA has the smallest bias in temporal variability of LHF during the DYNAMO/CINDY2011 period.

  4. Influence of Madden-Julian Oscillation (MJO) on Rainfall Variability over West Africa at Intraseasonal Timescale

    NASA Astrophysics Data System (ADS)

    Niang, C.

    2015-12-01

    Intraseasonal variability of rainfall over West Africa plays a significant role in the economy of the region and is highly linked to agriculture and water resources. This research study aims to investigate the relationship between Madden Julian Oscillation (MJO) and rainfall over West Africa during the boreal summer in the the state-of-the-art Atmospheric Model Intercomparison Project (AMIP) type simulations performed by Atmosphere General Circulation Models (GCMs) forced with prescribed Sea Surface Temperature (SST). It aims to determine the impact of MJO on rainfall and convection over West Africa and identify the dynamical processes which are involved in the state-of-the-art climate simulations. The simulations show in general good skills in capturing its main characteristics as well as its influence on rainfall over West Africa. On the global scale, most models simulated an eastward spatio-temporal propagation of enhanced and suppressed convection similar to the observed. However, over West Africa the MJO signal is weak in few of the models although there is a good coherence in the eastward propagation. The influence on rainfall is well captured in both Sahel and Guinea regions thereby adequately producing the transition between positive and negative rainfall anomalies through the different phases as seen in the observation. Furthermore, the results show that strong active convective phase is clearly associated with the African Easterly Jet (AEJ) but the weak convective phase is associated with a much weaker AEJ particularly over coastal Ghana. In assessing the mechanisms which are involved in the above impacts the convectively equatorial coupled waves (CCEW) are analysed separately. The analysis of the longitudinal propagation of zonal wind at 850hPa and outgoing longwave radiation (OLR) shows that the CCEW are very weak and their extention are very limited beyong West African region. It was found that the westward coupled equatorial Rossby waves are needed to

  5. The Madden-Julian oscillation in ECHAM4 coupled and uncoupled general circulation models

    DOE PAGES

    Sperber, Kenneth R.; Gualdi, Silvio; Legutke, Stephanie; ...

    2005-06-29

    The Madden-Julian oscillation (MJO) dominates tropical variability on timescales of 30–70 days. During the boreal winter/spring, it is manifested as an eastward propagating disturbance, with a strong convective signature over the eastern hemisphere. The space–time structure of the MJO is analyzed using simulations with the ECHAM4 atmospheric general circulation model run with observed monthly mean sea-surface temperatures (SSTs), and coupled to three different ocean models. The coherence of the eastward propagation of MJO convection is sensitive to the ocean model to which ECHAM4 is coupled. For ECHAM4/OPYC and ECHO-G, models for which ~100 years of daily data is available, Montemore » Carlo sampling indicates that their metrics of eastward propagation are different at the 1% significance level. The flux-adjusted coupled simulations, ECHAM4/OPYC and ECHO-G, maintain a more realistic mean-state, and have a more realistic MJO simulation than the nonadjusted scale interaction experiment (SINTEX) coupled runs. The SINTEX model exhibits a cold bias in Indian Ocean and tropical West Pacific Ocean sea-surface temperature of ~0.5°C. This cold bias affects the distribution of time-mean convection over the tropical eastern hemisphere. Furthermore, the eastward propagation of MJO convection in this model is not as coherent as in the two models that used flux adjustment or when compared to an integration of ECHAM4 with prescribed observed SST. This result suggests that simulating a realistic basic state is at least as important as air–sea interaction for organizing the MJO. While all of the coupled models simulate the warm (cold) SST anomalies that precede (succeed) the MJO convection, the interaction of the components of the net surface heat flux that lead to these anomalies are different over the Indian Ocean. The ECHAM4/OPYC model in which the atmospheric model is run at a horizontal resolution of T42, has eastward propagating zonal wind anomalies and latent heat

  6. The Madden-Julian Oscillation in ECHAM4 Coupled and Uncoupled GCMs

    SciTech Connect

    Sperber, K R; Gualdi, S; Legutke, S; Gayler, V

    2004-10-13

    The Madden-Julian Oscillation (MJO) dominates tropical variability on timescales of 30-70 days. During the boreal winter/spring it is manifested as an eastward propagating disturbance, with a strong convective signature over the eastern hemisphere. The space-time structure of the MJO is analyzed using simulations with the ECHAM4 atmospheric general circulation model run with observed monthly mean sea-surface temperatures, and coupled to three different ocean models. The coherence of the eastward propagation of MJO convection is sensitive to the ocean model to which ECHAM4 is coupled. For ECHAM4/OPYC and ECHO-G, models for which {approx}100 years of daily data is available, Monte Carlo sampling indicates that their metrics of eastward propagation are different at the 1% significance level. The flux-adjusted coupled simulations, ECHAM4/OPYC and ECHO-G, maintain a more realistic mean-state, and have a more realistic MJO simulation than the non-adjusted SINTEX coupled runs. The SINTEX model exhibits a cold bias in Indian Ocean and tropical West Pacific Ocean sea-surface temperature of {approx}0.5 C. This cold bias affects the distribution of time-mean convection over the tropical Eastern Hemisphere. Furthermore, the eastward propagation of MJO convection in this model is not as coherent as in the two models that used flux adjustment or compared to an integration of ECHAM4 with prescribed observed SST. This result suggests that simulating a realistic basic state is at least as important as air-sea interaction for organizing the MJO. While all of the coupled models simulate the warm (cold) SST anomalies that precede (succeed) the MJO convection, the interaction of the components of the net surface heat flux that lead to these anomalies are different over the Indian Ocean. The ECHAM4/OPYC model, in which the atmospheric model is run at a horizontal resolution of T42, has eastward propagating zonal wind anomalies and latent heat flux anomalies. However, the integrations

  7. Precursor Environmental Conditions Associated with the Termination of Madden-Julian Oscillation Events

    NASA Astrophysics Data System (ADS)

    Stachnik, J. P.; Waliser, D. E.; Majda, A.

    2014-12-01

    Current generations of global climate models continue to struggle with simulating many of the observed features of the Madden-Julian oscillation (MJO) and suffer from low skill regarding initiation forecasts. While recent work has focused on those mechanisms thought to be important for MJO initiation, fewer studies have examined the large-scale conditions associated with quiescent periods of the MJO and the decay of existing events. Understanding these mechanisms may provide a valuable context toward improving simulations of MJO initiation and propagation in climate and operational weather forecast models. This study presents an analysis of the precursor environmental conditions related to the termination of MJO events. A simple climatology is created using a real-time MJO monitoring index, documenting the locations and frequencies of MJO decay. Lead-lag composites of several atmospheric variables including temperature, moisture, and intraseasonal wind anomalies are generated from three reanalyses. Long-term, lower tropospheric moisture deficits over the local domain best identify terminating events over the Indian Ocean, with a northward shift of the Intertropical Convergence Zone (ITCZ) and corresponding lead times as much as 20 days prior to MJO decay. Statistically significant differences are also identified more than 10 days in advance of MJO termination events in the west Pacific, though the vertical velocity and moisture anomalies are more symmetric about the equator. We also present results for those MJOs that terminate over the maritime continent. Unlike the Indian Ocean and west Pacific, the likelihood of an MJO to cross the maritime continent appears related to its own intensity, rather than the upstream environmental conditions, with only the strongest MJOs propagating into the warm pool region. Finally, a budget analysis is performed on the three-dimensional moisture advection equation in order to better elucidate what time-scales and physical

  8. Madden-Julian oscillation and sea surface temperature interactions in a multi-scale framework

    NASA Astrophysics Data System (ADS)

    Zhou, Lei

    2009-12-01

    The ocean-atmosphere coupling can play a role in initiating and sustaining the Madden-Julian Oscillations (MJOs), which are the major intraseasonal oscillations in the atmosphere. In this thesis, the oceanic influence on MJOs is studied with reanalysis products, numerical models, and idealized theoretical models. The energy sources for MJOs are calculated with NCEP reanalysis. The perturbed potential energy is found to be the most important energy source for most MJO events. In some MJO events, the sea surface is warmed due to the reduced latent heat flux during the suppressed phase of MJOs. As a result, warm sea surface temperature anomalies (SSTAs) occur, which appear to prolong the life time of these MJO events. In a minority of the MJO events, warm SSTAs can drive the atmosphere actively and trigger MJO events. In these events, the warm SSTAs are attributable to the internal oceanic processes influenced by the warm Indonesian Throughflow (ITF), which spreads from the southeastern Indian Ocean to the western Indian Ocean and modifies the subtle balance between stratification and mixing in the western Indian Ocean. In addition, during the transit period between monsoon seasons, a few MJO events are sustained by the energy obtained from the mean kinetic energy. Since the MJO events have different energy sources, their mechanisms should be considered in the context of these energy sources. While the spatial scale of the SSTAs in the Indian Ocean is only of order 100 km, the scale of MJOs is of order 1000 km, raising the potential for interactions between the oceanic and the atmospheric oscillations with different scales and this is demonstrated to be possible with analytical solutions to idealized linear governing equations. With a reasonable choice of parameters, the meso-scale oceanic and the large-scale atmospheric oscillations can interact with each other and lead to unstable waves in the intraseasonal band in this linear coupled model. The coupling and

  9. Assessment of Madden-Julian oscillation simulations with various configurations of CESM

    NASA Astrophysics Data System (ADS)

    Li, Xiaojing; Tang, Youmin; Zhou, Lei; Chen, Dake; Yao, Zhixiong; Islam, Siraj Ul

    2016-10-01

    This paper presents an assessment of the Madden-Julian oscillation (MJO) simulated in five experiments using the Community Earth System Model under different model settings. The analysis focused on the effects of air-sea coupling, resolution and atmospheric physics on the basic characteristics of the MJO, including intraseasonal variance, wavenumber-frequency characteristics and eastward propagation, using outgoing longwave radiation (OLR), zonal winds at 850 hPa (U850) and at 200 hPa (U200). Five experiments are conducted for this purpose including one atmospheric model—Community Atmosphere model version 4 (CAM4), two coupled models with CAM4 or Community Atmosphere model version 5 (CAM5) as the atmospheric component at a low resolution (CLP4_2d, CPL5_2d) and two the same coupled model with a high resolution (CPL4_1d and CLP5_1d). The results show that all models have better intraseasonal characteristics in U850 than in OLR. The uncoupled model CAM4 has lower fidelity than the coupled models in characterizing MJO basic features including the temporal and spatial intraseasonal variability and the eastward propagation. With ocean feedback, the coherence of convection and circulation is improved in the coupled models. The higher resolution is helpful in improving ISV spatial distribution and eliminating low frequency bias in the frequency-wavenumber spectra although it has little improvement to MJO-band variance (power) in frequency-wavenumber spectra. The new shallow convection scheme in CAM5 improves the moisture process of the lower troposphere so that CPL5_2d and CPL5_1d have more realistic eastward propagation speed in the boreal winter and better northward propagation in the boreal summer than other models. However, the strength of the convective MJO signal in CPL5_2d and CPL5_1d are weaker than other models and observations, which is probably one of the most spurious features in CPL5_2d and CPL5_1d experiments, suggesting that the CAM5 has a weaker

  10. MJO (Madden-Julian Oscillation) Analysis of the Chlorophyll-a Distribution in Western Waters Bengkulu

    NASA Astrophysics Data System (ADS)

    Haryanto, Y. D.; Fitrianti, N.; Hartoko, A.; Anggoro, S.; Zainuri, M.

    2017-02-01

    The global phenomenon Madden-Julian Oscillation (MJO) is one of the dominant oscillation in the equatorial region of the Indian Ocean that oscillates between 30-60 days and experience the process of convection movement from west to east. MJO has a correlation of high intensity rainfall of the area in its path. During his journey eastward, the MJO is influenced by the position of the sun. When the sun in the equatorial MJO moves straight east. Meanwhile, when the position of the sun in the south of the equator, MJO shifted slightly to the south of the equator, known as the propagation of the south-east (south-eastern propagation). When the position of the sun is in the north of the equator, MJO shifted slightly to the north of the equator, known as the propagation of the north-east (north-east of propagation). Waters west of Bengkulu has a huge potential in the fisheries sector, which is situated overlooking the Indian Ocean. The phenomenon MJO influence on rainfall, sea surface temperature, and the concentration of chlorophyll-a. This study aims to look at the temporal distribution of sea surface temperature and chlorophyll-a and decide how MJO relationship with SST and precipitation conditions and increasing the amount of chlorophyll during the phase of the MJO in Bengkulu waters. The dataset used is data of chlorophyll-a which download in oceancolor.gfsc.nasa.gov , sea surface temperature data is used is a model of Kaplan Extended V2, RMM1 index data and RMM2 on www.bom.gov.au and rainfall data of Bengkulu region. The method used is descriptive statistical methods, Conditional Probability and logistics regression. From the above explanation can be said that there is a relationship between the incidence of MJO by the number of chlorophyll-a. Odds the addition of chlorophyll-a have a linear relationship with the duration of the incident MJO in Bengkulu, odds increase the amount of chlorophyll-a in Bengkulu region reaches a threshold value of 0.5, it means that the

  11. Integrating Sensor Data and Informatics to Improve Understanding of Hypoxia in the WATERS Network Testbed at Corpus Christi Bay, Texas

    NASA Astrophysics Data System (ADS)

    Coopersmith, E.; Kulis, P.; Brouwer, A.; Montagna, P.; Hodges, B. R.; Minsker, B.; Maidment, D.

    2007-12-01

    The goal of the WATERS Network Testbed in Corpus Christi Bay (Texas) is to better understand hypoxia by creating a prototype Environmental Information System (EIS) that links field data collection, real-time modeling techniques, and cyberinfrastructure. In this paper, we explore the connection between the bay's bottom-water hypoxia and wind mixing by integrating several field data sets within a machine-learning model and exploring the mechanisms leading to the model results using an independent data set. K-nearest neighbor machine learning models applied to several long-term data sets indicate that wind velocities are instrumental in forecasting hypoxic events. Additionally, statistical analysis suggests that the impacts of wind vary spatially throughout the bay. Forecasting algorithms can be employed to predict not only the expected value of dissolved oxygen levels throughout the bay, but also the probability of observing hypolimnetic hypoxia. Prior values of dissolved oxygen, salinity, wind direction, wind velocity, and water temperature have been shown to play a meaningful role in influencing the DO value twenty-four hours hence. Visualizing spatial maps of expected means and variances not only illustrate potentially hypoxia regions, but areas where future sampling would be most beneficial as well. We use a short-term field data set to explore the possible mechanisms controlling the observed statistical trends in long-term data sets. Field data taken from July 2006 document a specific hypoxic episode that follows a high wind event. Analyses of temporal changes in the vertical water column support the suspected connections between wind, salinity, and hypoxia, and suggest some possible mechanisms for this connection. It is suspected that wind controls the sinking of heavy, saline water into the bottom of Corpus Christi Bay from Laguna Madre, a nearby shallower bay. This isolation of dense water from surface oxygen replenishment may be critical in hypoxia

  12. Significance of organochlorine and heavy metal residues in wintering shorebirds at Corpus Christi, Texas, 1976-77

    USGS Publications Warehouse

    White, D.H.; King, K.A.; Prouty, R.M.

    1980-01-01

    Organochlorine and heavy metal residues were determined in 103 shorebirds of seven species collected at Corpus Christi, Texas, during the winter of 1976-77 to evaluate their potential effects on population survival, DDE and polychlorinated biphenyls (PCBs) were detected in most samples. Chlordane isomers, dieldrin, toxaphene, and heptachlor epoxide also occurred, but less frequently. In general, organochlorine residues were low in skinned carcasses. Geometric means on a wet weight basis ranged from 0.25 ppm to 4.76 ppm for DDE and from 0.67 ppm to 6.64 ppm for PCBs; residues of the other compounds averaged less than 1 ppm in all instances. Mercury, lead, arsenic and vanadium occurred in all shorebird livers, and selenium and cadmium were detected in all kidneys. Residues of these metals, except selenium, were low in most tissue samples. Selenium averages varied from 1.77 ppm to 5.62 ppm (wet weight) in kidneys; residues in this range may be sufficient to inhibit reproduction or to induce other forms of toxicity, especially at the higher levels.

  13. Precipitation microstructure in different Madden-Julian Oscillation phases over Sumatra

    NASA Astrophysics Data System (ADS)

    Marzuki; Hashiguchi, Hiroyuki; Kozu, Toshiaki; Shimomai, Toyoshi; Shibagaki, Yoshiaki; Takahashi, Yukihiro

    2016-02-01

    Intraseasonal variations of precipitation and its microstructure are investigated using measurements of the Equatorial Atmospheric Radar (EAR) facilities at Kototabang, west Sumatra, Indonesia (0.20°S, 100.32°E, 864 m above sea level). Raindrop size distribution (DSD) observations are obtained from a 2D-Video Disdrometer (2DVD) with a near continuous record of operation over eight consecutive years (2003-2010). Precipitation types are classified using 1.3-GHz wind profiler observation, and are partitioned according to active and inactive convective phases of Madden-Julian Oscillation (MJO). It is found that precipitation systems during the inactive phase are more continental in nature than those during the active phase. Cloud propagation from brightness temperature data indicates that Sumatra receives the rainfall mainly from maritime clouds during the active phase, while it is mainly from the continental clouds (land-based convection) during the inactive phase. Other remarkable differences between active and inactive phase precipitation systems are also observed from the vertical structure of precipitation. The precipitation during the inactive phase has deeper storms, a higher reflectivity aloft, more lightning activity and less stratiform characteristics, as compared to the active phase. Assessment of cloud effective radius of the Moderate Resolution Imaging Spectroradiometer (MODIS) data also shows a slight difference in the cloud droplet between the active and the inactive MJO phases. Different convective storms in different MJO phases lead to different DSD characteristics and Z-R relationships. The DSD during the inactive phase tends to have a higher concentration of medium and large-size drops than the active counterpart, consistent with the previous study during the first campaign of Coupling Processes in the Equatorial Atmosphere project. Although the DSD parameters and coefficient of Z-R relationships fall within the range of tropical maritime

  14. Advection, Moistening, and Shallow-to-deep Convection Transitions During the Initiation and Propagation of Madden-Julian Oscillation

    SciTech Connect

    Hagos, Samson M.; Feng, Zhe; Landu, Kiranmayi; Long, Charles N.

    2014-09-11

    Using observations from the 2011 AMIE/DYNAMO field campaign over the Indian Ocean and a high-resolution regional model simulation, the processes that lead to the rapid shallow-to-deep convection transitions associated with the initiation and eastward propagation of the Madden-Julian Oscillation (MJO) are examined. By tracking the evolution of the depth of several thousand individual model simulated precipitation features, the role of and the processes that control the observed midtropospheric moisture buildup ahead of the detection of deep convection are quantified at large and convection scales. The frequency of shallow-to-deep convection transitions is found to be sensitive to this midlevel moisture and large-scale uplift. This uplift along with the decline of large-scale drying by equator-ward advection causes the moisture buildup leading to the initiation of the MJO. Convection scale moisture variability and uplift, and large-scale zonal advection play secondary roles.

  15. Resilience of an explicitly simulated Madden-Julian Oscillation to extreme basic state variation challenges moisture mode view

    NASA Astrophysics Data System (ADS)

    Pritchard, M. S.; Yang, D.

    2015-12-01

    Idealized experiments are performed with the SuperParamaterized CAM to test two hypotheses motivated by a modern view of the "moisture mode" theory of the Madden Julian Oscillation. Inconsistent with both hypotheses, evidence is found of a cold-MJO signal under horizontally homogenous SSTs. Apparently the intrinsic MJO signal in SPCAM3 is a surprisingly resilient mode that can survive both extreme cooling of the climate and a reversal of near-equatorial meridional MSE gradients. Column MSE analysis indicates a negative overall growth rate of MJO MSE in our coldest simulations, which is hard to reconcile with the survival of a cold MJO from a moisture mode view. A resilience of familiar features of the MJO-MSE budget in our simulations could indicate some other cause, beyond local column MSE dynamics, requires such phase relationships to exist.

  16. Surprising Resilience of the Madden-Julian Oscillation to Extreme Climate Cooling in the Superparameterized Community Atmosphere Model.

    NASA Astrophysics Data System (ADS)

    Pritchard, M. S.; Yang, D.

    2014-12-01

    We test the hypothesis that radiative convective equilibrium (RCE) self-aggregation is a good metaphor for the maintenance of the Madden-Julian Oscillation by imposing extreme cooling in the Superparameterized Community Atmosphere Model (SPCAM) v. 3.0 in a uniform SST configuration. The expectation is that - like RCE self-aggregation - SPCAM's simulated MJO should shut down at sea surface temperatures significantly less than 25 degrees Celsius. Remarkably, the MJO in SPCAM is resilient to extreme cooling down to one degree Celsius. With cooling, the simulated MJO becomes more barotropic and its zonal wavelength decreases. The amplitude decrease and horizontal scale contraction are consistent with the theoretical prediction from Yang and Ingersoll (2014, GRL).

  17. Atmospheric aerosol properties over the equatorial Indian Ocean and the impact of the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    DeWitt, H. L.; Coffman, D. J.; Schulz, K.; Brewer, A.; Quinn, P.; Bates, T. S.

    2013-12-01

    The chemical, physical, and optical properties of sub- and supermicrometer aerosols over the equatorial Indian Ocean were measured on-board the R/V Revelle during the fall 2011 Dynamics of the Madden Julian Oscillation (DYNAMO) field campaign. During this time both the retreating of the Asian monsoon and two Madden Julian Oscillation (MJO) events were observed. The R/V Revelle was on station (0.10 N and 80.50 E) to measure atmospheric and oceanic conditions between October 4 and October 30, 2011 (Leg 2 of the DYNAMO research cruise) and November 11th and December 4th, 2011 (Leg 3). Throughout the campaign, background marine atmospheric conditions were generally observed with average particle number concentration of less than 300 cm-3 and ozone (O3) <30 ppbv. As the Asian monsoon season retreated over the boreal fall and the general wind direction changed from southerly to northerly transporting, respectively, clean marine and polluted continental air masses, the average submicrometer aerosol mass almost doubled from 1.8 × 1.1 μg m-3 in October to 3.3 × 2.2 μg m-3 in November/December. In addition, the aerosol chemical composition and optical properties appeared to be more influenced by continental sources. The effect of MJO-associated convection anomalies on aerosols in the remote marine boundary layer (MBL) were measured during November when a complete MJO convection wave moved over the equatorial Indian Ocean and during October when a partial MJO event was observed. MJO-associated convection strongly affected the local aerosol population's size, composition, optical properties, and concentration as increased vertical mixing introduced new particles into the MBL, rainout cleared the atmosphere of submicrometer continental aerosol particles while high winds enhanced the concentration sea salt aerosol particles in the local atmosphere. Four stages of MJO-affected aerosol population changes in the remote Indian Ocean are defined.

  18. Atmospheric aerosol properties over the equatorial Indian Ocean and the impact of the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Langley Dewitt, H.; Coffman, Derek J.; Schulz, Kristen J.; Alan Brewer, W.; Bates, Timothy S.; Quinn, Patricia K.

    2013-06-01

    The chemical, physical, and optical properties of sub- and supermicrometer aerosols over the equatorial Indian Ocean were measured on board the R/V Revelle during the fall 2011 Dynamics of the Madden-Julian Oscillation field campaign. During this time, both the retreating of the Asian monsoon and two Madden-Julian Oscillation (MJO) events were observed. The R/V Revelle was on station (0.1°N and 80.5°E) to measure atmospheric and oceanic conditions between 4 October and 30 October 2011 (Leg 2) and 11 November and 4 December 2011 (Leg 3). Throughout the campaign, background marine atmospheric conditions were usually observed. As the Asian monsoon season retreated over the boreal fall and the general wind direction changed from southerly to northerly transporting, respectively, clean marine and polluted continental air masses, the average submicrometer aerosol mass nearly doubled from Leg 2 to Leg 3 and the aerosol appeared to be more influenced by continental sources. The effect of MJO-associated convection anomalies on aerosols in the remote marine boundary layer (MBL) was measured during November when a complete MJO convection wave moved over the equatorial Indian Ocean and during October when a partial MJO event was observed. MJO-associated convection strongly affected the local aerosol as increased vertical mixing introduced new particles into the MBL, rainout cleared the atmosphere of submicrometer aerosol particles, and high winds enhanced the concentration of sea salt aerosol particles in the local atmosphere. Four stages of MJO-affected aerosol population changes in the remote Indian Ocean are defined.

  19. Ethnic Differences in Post-Stroke Quality of Life in the Brain Attack Surveillance in Corpus Christi (BASIC) Project

    PubMed Central

    Reeves, Sarah L; Brown, Devin L; Baek, Jonggyu; Wing, Jeffrey J; Morgenstern, Lewis B; Lisabeth, Lynda D

    2015-01-01

    Background and Purpose Mexican Americans (MAs) have an increased risk of stroke and experience worse post-stroke disability than non-Hispanic whites (NHWs), which may translate into worse post-stroke quality of life (QOL). We assessed ethnic differences in post-stroke QOL, as well as potential modification of associations by age, sex, and initial stroke severity. Methods Ischemic stroke survivors were identified through the biethnic, population-based Brain Attack Surveillance in Corpus Christi (BASIC) Project. Data were collected from medical records, baseline interviews, and 90-day post-stroke interviews. Post-stroke QOL was measured at approximately 90 days by the validated short-form stroke-specific QOL in 3 domains: overall, physical, and psychosocial (range 0–5; higher scores represent better QOL). Tobit regression was used to model associations between ethnicity and post-stroke QOL scores, adjusted for demographics, clinical characteristics, and pre-stroke cognition and function. Results Among 290 eligible stroke survivors (66% MA, 34% NHW, median age=69 years), median scores for overall, physical, and psychosocial post-stroke QOL were 3.3, 3.8 and 2.7, respectively. Overall post-stroke QOL was lower for MAs than NHWs (mean difference = −0.30, 95%CI:−0.59,−0.01) and in the physical domain (mean difference = −0.47, 95%CI:−0.81,−0.14) after multivariable adjustment. No ethnic difference was found in the psychosocial domain. Age modified the associations between ethnicity and post-stroke QOL such that differences were present in older but not younger ages. Conclusions Disparities exist in post-stroke QOL for MAs and appear to be driven by differences in older stroke patients. Targeted interventions to improve outcomes among MA stroke survivors are urgently needed. PMID:26286542

  20. Phenolic profile, antioxidant capacity of five Ziziphus spina-christi (L.) Willd provenances and their allelopathic effects on Trigonella foenum-graecum L. and Lens culinaris L. seeds.

    PubMed

    Elaloui, M; Ghazghazi, H; Ennajah, A; Manaa, S; Guezmir, W; Karray, N B; Laamouri, A

    2017-05-01

    The aim of this work was to evaluate some secondary metabolites, antioxidant activity of methanolic leaf extracts of five Ziziphus spina-christi provenances (INRGREF, Tozeur, Degueche, Nafta and Kebelli) and their allelopathic effects on Trigonella foenum-graecum and Lens culinaris. Leaves were collected during 2013 and 2014. Total phenols, flavonoids, tannins and antioxidant activity were evaluated using the Folin ciocalteux, Aluminum trichloride, vanillin and scavenging activity on 22-diphenyl-1-picrylhydrazyl (DPPH) radical methods, respectively. Total phenols, tannins and flavonoids were present, at levels of 57.41 mg GAE/g DW, 31.98 mg RE/g DW and 14.68 μg CE/g DW, respectively. The high antioxidant activity (0.086 μg/mL) was noted in kebelli provenance (2013). The highest germination, plumule and radicle lengths of tested species were observed in INRGREF provenance. Z. spina-christi leaf extracts may be suggested in foods and pharmaceutical industries. Leaf extracts could also provide a natural herbicide with a positive impact on the environment.

  1. Seaglider Observations of Equatorial Ocean Rossby Wave Interactions With the Madden-Julian Oscillation During CINDY-DYNAMO

    NASA Astrophysics Data System (ADS)

    Webber, B. G.; Matthews, A. J.; Heywood, K. J.; Stevens, D. P.

    2012-12-01

    During the CINDY-DYNAMO field campaign in 2011-12, a Seaglider was deployed at 80°E in the Indian Ocean, and patrolled between 3° and 4°S over a period of three months. In addition, the periods when the Seaglider was travelling to and from the deployment location at 1.5°S represent two independent sections almost four months apart. The 3-4°S data have been optimally interpolated to generate unique and very high resolution data sets of temperature, salinity, chlorophyll and oxygen, along with derived geostrophic velocities in a region that has been under-observed to date. These observations reveal the importance of equatorial ocean Rossby waves in generating intraseasonal variability in the subsurface Indian Ocean, with temperature anomalies of around 0.5°C and salinity anomalies of 0.1 due to such waves. These anomalies extend with only slightly reduced magnitude into the deep ocean up to the maximum observed depth of 1000 m. The latitudinal structure of the temperature, salinity and density anomalies is generally very coherent, consistent with the structure of first meridional mode equatorial ocean Rossby waves. The chlorophyll and oxygen data from the Seaglider show how these waves have a substantial impact on biological activity at this location, with the peak productivity shifting vertically by up to 20 metres due to upwelling and downwelling. Linearised numerical ocean model simulations were conducted for the period around the Seaglider deployment period, to put the observations in context. These model simulations were forced by ERA-Interim winds that were filtered to remove the high-frequency variability while retaining that relating to the Madden-Julian Oscillation (MJO). Comparison between the model runs and Seaglider observations indicates that the MJO-related winds are directly responsible for a large portion of the observed ocean Rossby wave activity, although there is also a role for lower-frequency wind forcing. The model results also highlight

  2. Monitoring and assessment of anthropogenic activities in mountain lakes: a case of the Fifth Triglav Lake in the Julian Alps.

    PubMed

    Ravnikar, Tina; Bohanec, Marko; Muri, Gregor

    2016-04-01

    The Fifth Triglav Lake is a remote mountain lake in the Julian Alps. The area of the Julian Alps where the lake is situated is protected by law and lies within the Triglav National Park. Mountain lakes in Slovenia were considered for a long time as pristine, unpolluted lakes, but analyses in the last decade revealed considerable human impact even in such remote places. Eutrophication or excessive accumulation of nutrients is the main problem of most lakes in the temperate climatic zone, also in Slovenia. Since the introduction of fish in 1991, the lake is going through a series of changes for which we do not know exactly where they lead, so the monitoring and assessment of anthropogenic activities are of great importance. For this purpose, a qualitative multiattribute decision model was developed with DEX method to assess ecological effects on the lake. The extent of the ecological effects on the lake is assessed using four main parameters: the trophic state, lake characteristics, environmental parameters, and anthropogenic stressors. Dependence of environmental impact on various external factors beyond human control, such as temperature, precipitation, retention time, and factors on which we have influence, such as the amount of wastewater and the presence of fish in the lake, were also evaluated. The following data were measured: chlorophyll a, nutrients, TP, oxygen, C/N ratio, nutrients in sediment, temperature, precipitation, retention time, and volume. We made assumptions about fish and wastewater, which we could not measure. The main contributions of this work are the designed model and the obtained findings for the Fifth Triglav Lake that can help not only scientists in understanding the complexity of lake-watershed systems and interactions among system components but also local authorities to manage and monitor the lake aquatic environment in an effective and efficient way. The model is flexible and can be also used for other lakes, assuming that the used

  3. OP09STEREOTACTIC RADIOSURGERY FOR BRAIN METASTASES AT THE CHRISTIE AT SALFORD ROYAL HOSPITAL: OUR TWO-YEAR EXPERIENCE

    PubMed Central

    Helbrow, J.; McBain, C.; Gattamaneni, R.; Tran, A.; McCarthy, C.; Edwards, R.; Redikin, J.; Handley, J.; O'Hara, C.; Kennedy, J.; Mills, S.; Soh, C.; Leggate, J.; Whitfield, G.

    2014-01-01

    INTRODUCTION: Stereotactic radiosurgery (SRS) for brain metastases (BMs) commenced at The Christie at Salford in Dec 11 using the Novalis TxTM and BrainLab ExacTrac® system. We report our first 2 years' data. METHOD: Patients meeting NHS commissioning criteria were referred via MDT for assessment and if suitable consent. We used the BrainLab mask, CT and MRI. Gross tumour volumes (GTVs) were grown by 2mm if <4cm3 and by 1mm if >4cm3 to a planning target volume. The dose to the 80% isodose was 21Gy/1 fraction(#), 18Gy/1# and 25.5Gy/3# alternate days for PTVs <7cm3, 7-13cm3 and >13cm3 respectively and 30Gy/5# on alternate days to the 90% isodose in critical locations or where organ at risk constraints were exceeded. Follow up was 3-monthly with MRI and clinic review. Radiological response was classified as complete, unequivocal, enlargement consistent with treatment, enlargement suspicious of progression or unequivocal progression. RESULTS: Between Dec 11-Jan 14, 89 patients were consented, 51% female. Median age was 61 years (range 16-81). Primaries included lung (34%), breast (22%) and melanoma (15%), which was controlled in 67%; 42% had no extracranial metastases. A total of 170 BMs were treated (1 a retreat); per course a median of 2 (1-5) BMs were treated with median total GTV 4.87cm3 (0.05-29.9cm3). Prescribed dose was 21Gy/1# in 101 BMs, 18Gy/1# in 43, 25.5Gy/3# in 10 and 30Gy/5# in 16. One year survival from first SRS was: overall 48% (95% CI 34%-60%), lung 39% (18%-59%), breast 89% (62%-97%) and melanoma 44% (10%-75%). CONCLUSION: Overall survival results are encouraging and suggest appropriate patient selection. More detailed analysis including toxicity and time to intracranial progression will be presented.

  4. Extended-range forecast of spring rainfall in southern China based on the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Li, Wenkai; Hsu, Pang-chi; He, Jinhai; Zhu, Zhiwei; Zhang, Wenjun

    2016-06-01

    Spring (March-May) rainfall after a dry period in winter has a substantial impact on agriculture and water management in populous southern China. The occurrence of low-frequency spring rainfall anomalies has been linked with the tropical Madden-Julian Oscillation (MJO) through its modulation of large-scale circulation and moisture supply over southern China. Using the spatial and temporal information of the MJO as a predictor, an empirical model for extended-range forecasting of spring rainfall in southern China was constructed. We first obtained the coupled patterns between the preceding MJO evolutions (real-time multivariate MJO index) and the succeeding rainfall variability in southern China based on singular value decomposition analysis. Then, a prediction was carried out by projecting the predictor onto the spatiotemporal coupled patterns. Useful skill, in terms of the temporal correlation coefficient (TCC) between the predicted and observed rainfall over southern China, persisted up to a forecast lead-time of six pentads. The forecast amplitude bias in terms of root-mean-square error was around 1.0 standard deviation. Also, the forecast skill was highly dependent on the strength of the MJO signal. During active MJO periods, the TCC skill was around twofold larger than that during weak MJO periods. The current statistical model shows encouraging ability, but additional work is required to improve its forecasting skill.

  5. [The celebrity of Polish and French medicine--Józef Julian Franciszek Feliks Babiński (1857-1932)].

    PubMed

    Skalski, Janusz H; Gładki, Marcin; Pypłacz, Dariusz

    2007-07-01

    The paper presents a biography of Polish and French medical scientist, Józef Julian Franciszek Feliks Babiński (1857-1932), a son of Polish exiles to France after the unsuccessful insurrection against the Russian occupants. Born in Paris, Babiński considered Poland as his own home-country, being faithful and grateful citizen of France, his adopted country. He made his neurological department in Paris a world famous medical centre at the turn of the 20th century. Currently for every student of medicine or physician practitioner, the name of Babiński immediately associates with the "toe phenomenon" (phénomène des orteils). The discovery of this "sign" (1896) is the crowning point of Babiński's work in semiology. He was a co-author of discoveries known under eponym names of syndromes: Babinski-Nageotte, Babinski-Fröhlich, Anton-Babinski and many others. Babiński emphasized his Polish origins, expressing his feeling towards two home countries (1922): "I am proud to have two countries--to one, I owe the knowledge, to the other, the country of my ancestors, the elements of my Polish soul...".

  6. Regulation of H2O and CO in Tropical Tropopause Layer by the Madden-Julian Oscillation

    NASA Technical Reports Server (NTRS)

    Wong, Sun; Dessler, Andrew E.

    2007-01-01

    Impacts of the Madden-Julian oscillation (MJO) on the water vapor (H2O) and carbon monoxide (CO) abundances in the tropical tropopause layer (TTL) are investigated using Aura Microwave Limb Sounder (MLS) data for November 2004 to May 2005. The effects of the eastward propagation of MJO on H2O and CO abundances in the TTL are evident. Deep convection transports H20 into the upper troposphere up to about the 355-365 K level. Around the 365-375 K level, a dry anomaly is collocated with a cold anomaly, which is above a warm anomaly located near the region of convection enhancement. Tropical mean H20 at 375 K is regulated by the MJO through convection enhancement and coherent with the local MJO-related temperature variation. The locations of dehydration follow the eastward propagation of convection enhancement and its area extent depends on the phase of the MJO. Enhancement of deep convection associated with the MJO also injects CO from the lower troposphere to the TTL up to 375 K. However, tropical mean CO at 375 K responds instantaneously to the large injection event occurring over the African continent.

  7. Madden–Julian Oscillation prediction skill of a new-generation global model demonstrated using a supercomputer

    PubMed Central

    Miyakawa, Tomoki; Satoh, Masaki; Miura, Hiroaki; Tomita, Hirofumi; Yashiro, Hisashi; Noda, Akira T.; Yamada, Yohei; Kodama, Chihiro; Kimoto, Masahide; Yoneyama, Kunio

    2014-01-01

    Global cloud/cloud system-resolving models are perceived to perform well in the prediction of the Madden–Julian Oscillation (MJO), a huge eastward -propagating atmospheric pulse that dominates intraseasonal variation of the tropics and affects the entire globe. However, owing to model complexity, detailed analysis is limited by computational power. Here we carry out a simulation series using a recently developed supercomputer, which enables the statistical evaluation of the MJO prediction skill of a costly new-generation model in a manner similar to operational forecast models. We estimate the current MJO predictability of the model as 27 days by conducting simulations including all winter MJO cases identified during 2003–2012. The simulated precipitation patterns associated with different MJO phases compare well with observations. An MJO case captured in a recent intensive observation is also well reproduced. Our results reveal that the global cloud-resolving approach is effective in understanding the MJO and in providing month-long tropical forecasts. PMID:24801254

  8. Impact of Madden-Julian Oscillation (MJO) on global distribution of total water vapor and column ozone

    NASA Astrophysics Data System (ADS)

    Fathurochman, Irvan; Lubis, Sandro W.; Setiawan, Sonni

    2017-01-01

    The Madden-Julian Oscillation (MJO) is the leading mode of intra-seasonal variability in the tropical troposphere, characterized by an eastward moving ‘pulse’ of cloud and rainfall near the equator. In this study, total precipitable water (TPW) and total column ozone (TCO) datasets from ECMWF ERA-Interim reanalysis were used to analyse the impact of the MJO on the distribution of water vapor and column ozone in the tropics from 1979 to 2013. The results show that seasonal variations of TPW modulated by the MJO are maximized in the tropics of about 10°S-10°N during boreal winter, while the variation in TCO is maximized in the mid-latitudes of about 30°S - 40°N in the same season. The composite analysis shows that MJO modulates TPW and TCO anomalies eastward across the globe. The underlying mechanism of the MJO’s impact on TPW is mainly associated with variation of tropical convection modulated by the MJO, while the underlying mechanism of the MJO’s impact on TCO is mainly associated with an intra-seasonal variability of tropopause height modulated by the MJO activity. This knowledge helps to improve the prediction skill of the intra-seasonal variation of water vapor and column ozone in the tropics during boreal winter.

  9. Identifying a key physical factor sensitive to the performance of Madden-Julian oscillation simulation in climate models

    NASA Astrophysics Data System (ADS)

    Kim, Go-Un; Seo, Kyong-Hwan

    2017-03-01

    A key physical factor in regulating the performance of Madden-Julian oscillation (MJO) simulation is examined by using 26 climate model simulations from the World Meteorological Organization's Working Group for Numerical Experimentation/Global Energy and Water Cycle Experiment Atmospheric System Study (WGNE and MJO-Task Force/GASS) global model comparison project. For this, intraseasonal moisture budget equation is analyzed and a simple, efficient physical quantity is developed. The result shows that MJO skill is most sensitive to vertically integrated intraseasonal zonal wind convergence (ZC). In particular, a specific threshold value of the strength of the ZC can be used as distinguishing between good and poor models. An additional finding is that good models exhibit the correct simultaneous convection and large-scale circulation phase relationship. In poor models, however, the peak circulation response appears 3 days after peak rainfall, suggesting unfavorable coupling between convection and circulation. For an improving simulation of the MJO in climate models, we propose that this delay of circulation in response to convection needs to be corrected in the cumulus parameterization scheme.

  10. The costs of being a restless intellect: Julian Huxley's popular and scientific career in the 1920s.

    PubMed

    Erlingsson, Steindór J

    2009-06-01

    Julian Huxley's (1887-1975) contribution to twentieth-century biology and science popularisation is well documented. What has not been appreciated so far is that despite Huxley's eminence as a public scientific figure and the part that he played in the rise of experimental zoology in Britain in the 1920s, his own research was often heavily criticised in this period by his colleagues. This resulted in numerous difficulties in getting his scientific research published in the early 1920s. At this time, Huxley started his popular science career. Huxley's friends criticised him for engaging in this actively and attributed the publication difficulties to the time that he allocated to popular science. The cause might also have its roots in his self-professed inability to delve deeply into the particularities of research. This affected Huxley's standing in the scientific community and seems to have contributed to the fact that Huxley failed twice in the late 1920s to be elected to the Royal Society. This picture undermines to some extent Peter J. Bowler's recent portrayal of Huxley as a science populariser.

  11. The Madden–Julian oscillation wind-convection coupling and the role of moisture processes in the MM5 model

    SciTech Connect

    Monier, Erwan; Weare, Bryan C.; Gustafson, William I.

    2009-07-24

    The realism of the Madden-Julian Oscillation (MJO) produced by the MM5 regional model is investigated using systematic and standardized statistical diagnostics. This study expands on previous work by choosing a larger domain and a different input dataset (ECMWF ERA-40 reanalysis) to force the initial and boundary conditions of the model. Results show that upper- and lower-level zonal winds display the correct MJO structure, phase speed (8 m s -1) and space-time power spectrum. However, the simulated free atmosphere moisture, Outgoing Longwave Radation (OLR) and precipitation do not exhibit any clear MJO signal. Yet, the boundary layer moisture, the moist static energy and the atmospheric instability, measured using a moist static energy instability index have clear MJO signals. A significant finding of this study is the ability of MM5 to simulate a realistic MJO phase speed in the winds without reproducing the MJO wind-convection coupling or a realistic propagation in the free atmosphere water vapor. This study suggests that the convergence of boundary layer moisture and the discharge and recharge of the moist static energy and atmospheric instability may be responsible for controlling the speed of propagation of the MJO circulation.

  12. Effective control parameters in deep convection scheme for the improved simulation of the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    CHOI, J.; Seo, K. H.

    2015-12-01

    This work seeks for the most effective parameters in a deep convection scheme (relaxed Arakawa-Schubert convection scheme) of the National Centers for Environmental Prediction Climate Forecast System model for the improved simulation of the Madden-Julian Oscillation (MJO). A suite of sensitivity experiments are performed in a coupled free run format. Two parameters are found to lead to a significant improvement: a threshold of relative humidity of the boundary layer and a fraction of re-evaporation of convective precipitation. Increasing the strength of these two parameters increases a supply of water vapor and condensate from deep cumulus ensembles to environment in the lower troposphere (especially, 700 hPa), and reduces light rainfall amount that prevents complete organization of convective system. Under a more humid environment (or positive moisture-convection feedback), the space-time spectral signal, eastward propagation, tilted vertical structure of dynamic and thermodynamic variables associated with the MJO are more comparable to observations and a recharge-discharge theory.

  13. Effective control parameters in a deep convection scheme for improved simulation of the Madden-Julian oscillation

    NASA Astrophysics Data System (ADS)

    Choi, Jin-Ho; Seo, Kyong-Hwan

    2016-07-01

    This work seeks to find the most effective parameters in a deep convection scheme (relaxed Arakawa-Schubert scheme) of the National Centers of Environmental Prediction Climate Forecast System model for improved simulation of the Madden-Julian Oscillation (MJO). A suite of sensitivity experiments are performed by changing physical components such as the relaxation parameter of mass flux for adjustment of the environment, the evaporation rate from large-scale precipitation, the moisture trigger threshold using relative humidity of the boundary layer, and the fraction of re-evaporation of convective (subgrid-scale) rainfall. Among them, the last two parameters are found to produce a significant improvement. Increasing the strength of these two parameters reduces light rainfall that inhibits complete formation of the tropical convective system or supplies more moisture that help increase a potential energy to large-scale environment in the lower troposphere (especially at 700 hPa), leading to moisture preconditioning favorable for further development and eastward propagation of the MJO. In a more humid environment, more organized MJO structure (i.e., space-time spectral signal, eastward propagation, and tilted vertical structure) is produced.

  14. Intraseasonal variability of surface ozone in Santiago, Chile: Modulation by phase of the Madden-Julian Oscillation (MJO)

    NASA Astrophysics Data System (ADS)

    Barrett, Bradford S.; Fitzmaurice, Sean J.; Pritchard, Sarah R.

    2012-09-01

    In Santiago, Chile, summertime surface ozone (O3) concentrations regularly exceed local and international health thresholds due to high antecedent pollutants, frequent clear skies, and warm surface air temperatures. However, few (if any) studies exist that have examined the intraseasonal variability of surface O3 or its modulation by phase of the Madden-Julian Oscillation (MJO). Therefore, the main objectives of this study were to investigate the intraseasonal variability of surface O3 and the meteorological parameters known to affect O3 concentrations during summer months in Santiago, and connect any observed variability to phase of the MJO. Ozone concentrations at seven stations in the Chilean National Air Quality Information System (SINCA), along with upper-air, surface, and reanalysis data, were used to create composites for each phase of the MJO. Results confirm that for the Santiago metropolitan region, both maximum daily O3 concentrations, as well as the diurnal cycle of O3, depend on MJO Phase. Ozone concentrations were highest during Phases 5 and 6 and lowest during Phases 1 and 2. Cloud cover anomalies best agreed with this pattern of O3 variability, with low (high) cloud cover anomalies occurring during days with high (low) ozone. Surface temperature and strength and height of the lower-troposphere temperature inversion had similar, but less pronounced, connections to O3, with slightly warmer surface temperatures and stronger inversions closer to the ground occurring on days with higher O3. Wind velocity was found to vary little between days with low and high ozone.

  15. Influence of the Madden–Julian oscillation on Tibetan Plateau snow cover at the intraseasonal time-scale

    PubMed Central

    Li, Wenkai; Guo, Weidong; Hsu, Pang-chi; Xue, Yongkang

    2016-01-01

    The Tibetan Plateau (TP), known as the third pole of the Earth, has snow cover with intraseasonal to decadal variability that affects weather and climate both inside and outside the TP. However, the factors that generate the TP snow cover (TPSC) anomalies at the intraseasonal time-scale are unclear. This report reveals the influence of the Madden‒Julian oscillation (MJO), which is the most dominant component of the tropical intraseasonal variability, on TPSC. We focus on wintertime snow cover over the central and eastern TP, where the intraseasonal variability is large. TPSC increases/decreases in the MJO phases 8‒1/4–5, when the eastward-propagating MJO suppressed/enhanced convection locates over the Maritime Continent. Such a change in TPSC leads to the most dominant positive/negative anomalies of TPSC in the following phases 2‒3/6‒7 due to the non-significant change of TPSC in these phases. There is anomalous moisture advection over the upstream of the TP caused by MJO-excited large-scale atmospheric circulation. The advection process generates the low-frequency eastward-propagating anomalous water vapour from upstream to the TP that influences precipitation and, eventually, TPSC. PMID:27464569

  16. Moist Process Biases in Simulations of the Madden–Julian Oscillation Episodes Observed during the AMIE/DYNAMO Field Campaign

    SciTech Connect

    Hagos, Samson M.; Feng, Zhe; Burleyson, Casey D.; Zhao, Chun; Martini, Matus N.; Berg, Larry K.

    2016-02-01

    Two Madden-Julian Oscillation (MJO) episodes observed during the 2011 AMIE/DYNAMO field campaign are simulated using a regional cloud-permitting model, a regional model with various cumulus parameterizations, and a global variable-resolution model with a high-resolution region centered over the tropical Indian Ocean. Model biases associated with moisture mode instability, wind-induced surface heat exchange (WISHE), and convective momentum transport (CMT) are examined and their relative contributions to the overall model errors are quantified using a linear statistical model. Linear relationships are found among the normalized root mean square errors of precipitation, saturation fraction, evaporation, and surface wind speed suggesting that errors may propagate across the processes involving these variables. Analysis using a linear statistical model shows the relationship between convection and local surface wind speed (related to CMT processes) is the source of the largest uncertainty. In comparison, WISHE processes in the simulations tend to be biased consistently, with excess evaporation for the same wind speeds as the observations, which suggests they are likely related to biases in boundary layer and/or surface schemes. The relationship between precipitation and saturation fraction (which is associated with moisture mode instability) is captured relatively well with slightly larger model precipitation in the simulations in comparison to observations for the same saturation fraction, especially for weak rain rates. By linking developments in theoretical understanding of MJO processes and cumulus parameterizations, this study provides guidance to future improvements of MJO simulation by in high-resolution regional and global models.

  17. Geometry of the Paleo-Nueces River Incised-Valley, Corpus Christi Bay, Texas as it Relates to Quaternary Sea Level History

    NASA Astrophysics Data System (ADS)

    Lugrin, L.; Gulick, S. S.; Goff, J. A.

    2012-12-01

    CHIRP subbottom seismic data were collected on the 2009 and 2011 Marine Geophysics Field courses at the University of Texas at Austin within the Corpus Christi Bay along the central Texas coast in order to study the geometry of the ancestral Nueces River incised valley and its evolution over Quaternary sea level history. Since the late Pleistocene, the Nueces River valley experienced a gradual infill due to sea level rise, interrupted by two major flooding events that represent periods of rapid sediment influx. These flooding events are recognizable based on abrupt changes in seismic facies. Discontinuous, chaotic fluvial lag deposits present underneath a fairly continuous, stratified, sub-horizontal estuarine coastal plain facies mark what is interpreted to be the Pleistocene/Holocene unconformity. Above the P/H boundary, oyster reefs thrive within the estuary until capped by a strong reflector, marking the second flooding surface that allowed enough incoming sediment to discontinue oyster reef growth. The estuarine deposits within the paleo-Nueces river valley exhibit a landward migration as the Holocene transgression proceeded. As infill continued, the bay-head delta prograded seaward and the flood-tidal delta extended progressively further up the estuary until the central estuarine basin was capped. The earlier flooding events provide strong reflectors that can be linked to the draining of Lake Agassiz around 8.2 k.a.. This event flooded the Gulf of Mexico with freshwater, and interrupted the estuarine infilling of the Nueces paleo-channel. Cores from previous studies have found at least two species of oyster reefs in Corpus Christi Bay: euryhaline species Crassostrea virginica, and Ostrea equestris, a species known to thrive in higher salinity waters. The presence of both species at the flooding boundary suggests the sudden pulse of freshwater mixed with higher salinity oceanic water. The second flooding surface is interpreted to be associated with an increase

  18. Antifungal activity of nettle (Urtica dioica L.), colocynth (Citrullus colocynthis L. Schrad), oleander (Nerium oleander L.) and konar (Ziziphus spina-christi L.) extracts on plants pathogenic fungi.

    PubMed

    Hadizadeh, I; Peivastegan, B; Kolahi, M

    2009-01-01

    Anti-mycotic activity of the ethanol extracts from Nettle (Urtica dioica L.), Colocynth (Citrullus colocynthis L. Schrad), Konar (Ziziphus spina-christi L.) and Oleander (Nerium oleander L.) floral parts were screened in vitro against four important plant pathogenic fungi viz.; Alternaria alternate, Fusarium oxysporum, Fusarium solani and Rizoctonia solani using agar dilution bioassay. Extracts showed antifungal activity against all the tested fungi. Among the plants, Nettle and Colocynth were the most effective against A. alternate and R. solani while Oleander possesses the best inhibition on F. oxysporum and F. solani. Konar was the most effective extract by reducing the growth of Rizoctonia solani than other fungi. These results showed that extracts could be considered suitable alternatives to chemical additives for the control of fungal diseases in plants.

  19. Delineation of marsh types of the Texas coast from Corpus Christi Bay to the Sabine River in 2010

    USGS Publications Warehouse

    Enwright, Nicholas M.; Hartley, Stephen B.; Brasher, Michael G.; Visser, Jenneke M.; Mitchell, Michael K.; Ballard, Bart M.; Parr, Mark W.; Couvillion, Brady R.; Wilson, Barry C.

    2014-01-01

    Coastal zone managers and researchers often require detailed information regarding emergent marsh vegetation types for modeling habitat capacities and needs of marsh-reliant wildlife (such as waterfowl and alligator). Detailed information on the extent and distribution of marsh vegetation zones throughout the Texas coast has been historically unavailable. In response, the U.S. Geological Survey, in cooperation and collaboration with the U.S. Fish and Wildlife Service via the Gulf Coast Joint Venture, Texas A&M University-Kingsville, the University of Louisiana-Lafayette, and Ducks Unlimited, Inc., has produced a classification of marsh vegetation types along the middle and upper Texas coast from Corpus Christi Bay to the Sabine River. This study incorporates approximately 1,000 ground reference locations collected via helicopter surveys in coastal marsh areas and about 2,000 supplemental locations from fresh marsh, water, and “other” (that is, nonmarsh) areas. About two-thirds of these data were used for training, and about one-third were used for assessing accuracy. Decision-tree analyses using Rulequest See5 were used to classify emergent marsh vegetation types by using these data, multitemporal satellite-based multispectral imagery from 2009 to 2011, a bare-earth digital elevation model (DEM) based on airborne light detection and ranging (lidar), alternative contemporary land cover classifications, and other spatially explicit variables believed to be important for delineating the extent and distribution of marsh vegetation communities. Image objects were generated from segmentation of high-resolution airborne imagery acquired in 2010 and were used to refine the classification. The classification is dated 2010 because the year is both the midpoint of the multitemporal satellite-based imagery (2009–11) classified and the date of the high-resolution airborne imagery that was used to develop image objects. Overall accuracy corrected for bias (accuracy

  20. On the relationship between the Madden-Julian Oscillation and 2 m air temperature over central Asia in boreal winter

    NASA Astrophysics Data System (ADS)

    Zhou, Yang; Lu, Youyu; Yang, Ben; Jiang, Jing; Huang, Anning; Zhao, Yong; La, Mengke; Yang, Qing

    2016-11-01

    Linear regression is used to explore the relationship between the Madden-Julian oscillation (MJO) and 2 m air temperature (T2M) over central Asia in boreal winter during 1979-2012. During MJO phases 3 and 4 (7 and 8), T2M anomalies exhibit a significantly strong, negative (positive) response to the MJO from the Arabian Sea to northwestern China. The anomalies of T2M are essentially influenced by surface net downward long (Ldown) and shortwave radiations, which are caused by the changes in total cloud cover (TCC) and low-level tropospheric air temperature. The anomalies of Ldown that are caused by TCC account for 20-65% of total Ldown. The remaining anomalies of total Ldown are explained by low-level air temperature changes. The 850 hPa air temperature (T850) tendency is mainly affected by the vertical motion over central Asia during MJO phases 1, 2, 4-6, and 8, as well as over northern India during phases 3 and 7. Over Saudi Arabia, Afghanistan, Pakistan, Kazakhstan, and northwestern China, the anomalies of T850 tendency are mainly explained by the temperature advection during phases 3 and 7. TCC and vertical motion are affected by the evolution of the MJO event. The cyclonic (anticyclonic) circulation related to the MJO over central Asia during phases 3 and 4 (7 and 8) causes the transport of cold (warm) air over central Asia. The MJO can be a useful intraseasonal signal to predict winter T2M over central Asia, where temperatures would be colder (warmer) than normal during MJO phases 3 and 4 (7 and 8).

  1. Shallow-to-Deep Transition of Madden-Julian Oscillation Convection as Observed by TRMM and GPM

    NASA Astrophysics Data System (ADS)

    Xu, W.; Rutledge, S. A.

    2015-12-01

    This study uses TRMM and GPM data to study the evolution of Madden-Julian Oscillation (MJO) convection over the Indian Ocean (IO). Radar observations from the 2011-2012 DYNAMO field campaign in the central IO have provided rich information on the 3D structure of MJO convection, including the transition from shallow to deep convection during the MJO onset. However, DYNAMO radar measurements are limited to only three MJO events and three radar sites. In this study, the shallow to deep transition (SDT) problem and lifecycle evolution of MJO events over the IO is revisited using longer term, larger-scale TRMM and GPM data. Our analysis indicates that the TRMM and GPM satellite is able to capture the evolution of individual MJO events (e.g., precipitation) on the daily and regional (e.g., 2000 km x 2000 km) scale. We have investigated the evolution and properties of ~40 prominent MJO events in terms of precipitation amounts, three-dimensional radar reflectivity, microwave ice scattering signatures, cloud top brightness temperature, and lightning flash rates. We track the SDT time scale and lifecycle evolution of each MJO using these multiple parameters, instead of composites in previous TRMM studies. MJO events have also been examined as a function of the MJO type (e.g., duration of MJO lifecycles and MJO strength). Preliminary results show that the SDT is on the scale of 7-10 days with small variations among different MJO types. SDT trends are less well-defined by the 20 dBZ (TRMM PR) echo top height compared to lower thresholds. In contrast, the satellite IR brightness temperature (TRMM VIRS), the 12 dBZ (GPM DPR Ka-band) echo top heights, and lightning flash rate (TRMM LIS) depict the STD rather well.

  2. Cloud-radiative driving of the Madden-Julian oscillation as seen by the A-Train

    NASA Astrophysics Data System (ADS)

    Del Genio, Anthony D.; Chen, Yonghua

    2015-06-01

    Cloud and water vapor radiative heating anomalies associated with convection may be an effective source of moist static energy driving the Madden-Julian Oscillation (MJO). In this paper 5 years of radiative heating profiles derived from CloudSat radar and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation data are analyzed to document radiative heating anomalies during the MJO. Atmospheric shortwave absorption and surface longwave radiation anomalies are of opposite sign and 10-20% as large as top-of-atmosphere outgoing longwave radiation (OLR) anomalies, confirming that OLR provides a useful estimate of the total column radiative heating anomaly. Positive anomalies generally peak about 1 week before the MJO peak and are smallest over the Indian Ocean. Anomalies over the Maritime Continent are strongest and coincident with the MJO peak. Shortwave heating profile anomalies are weaker than longwave anomalies in the active region of the MJO but generally of opposite sign; thus, shortwave heating damps the longwave destabilization of the lower troposphere. The exception is the onset phase of the MJO, where shortwave and longwave heating anomalies due to thin cirrus are both positive in the upper troposphere and exert a stabilizing influence. Specific humidity anomalies in the middle troposphere reach 0.5 g kg-1, but the associated clear-sky heating anomaly is small. Radiative enhancement of column moist static energy becomes significant as precipitation increases before the MJO peak and remains high after the MJO peak as precipitation begins to decline. Elevated radiative heating after the peak may contribute to destabilizing the MJO.

  3. Tropical Atlantic Dust and Smoke Aerosol Variabilities Related to the Madden-Julian Oscillation in MODIS and MISR Observations

    NASA Technical Reports Server (NTRS)

    Guo, Yanjuan; Tian, Baijun; Kahn, Ralph A.; Kalashnikova, Olga; Wong, Sun; Waliser, Duane E.

    2012-01-01

    In this study, MODIS fine mode fraction and MISR non-spherical fraction are 2used to derive dust and smoke AOT components (tau(sub dust) and tau(sub smoke)) over the tropical Atlantic, and their variabilities related to the Madden-Julian Oscillation (MJO) are then investigated. Both MODIS and MISR show a very similar dust and smoke winter climatology. tau(sub dust) is found to be the dominant aerosol component over the tropical Atlantic while tau(sub smoke) is significantly smaller than tau(sub dust). The daily MODIS and MISR tau(sub dust) are overall highly correlated, with the correlation coefficients typically about 0.7 over the North Atlantic. The consistency between the MODIS and MISR dust and smoke aerosol climatology and daily variations give us confidence to use these two data sets to investigate their relative contributions to the total AOT variation associated with the MJO. However, unlike the MISR dust discrimination, which is based on particle shape retrievals, the smoke discrimination is less certain, based on assumed partitioning of maritime aerosol for both MISR and MODIS. The temporal evolution and spatial patterns of the tau(sub dust) anomalies associated with the MJO are consistent between MODIS and MISR. The tau(sub dust) anomalies are very similar to those of tau anomalies, and are of comparable magnitude. In contrast, the MJO-related tau(sub smoke) anomalies are rather small, and the tau(sub mar) anomalies are negligible. The consistency between the MODIS and MISR results suggests that dust aerosol is the dominant component on the intra-seasonal time scale over the tropical Atlantic Ocean.

  4. Tropical Atlantic Dust and Smoke Aerosol Variations Related to the Madden-Julian Oscillation in MODIS and MISR Observations

    NASA Technical Reports Server (NTRS)

    Guo, Yanjuan; Tian, Baijun; Kahn, Ralph A.; Kalashnikova, Olga; Wong, Sun; Waliser, Duane E.

    2013-01-01

    In this study, Moderate Resolution Imaging Spectroradiometer (MODIS) fine mode fraction and Multi-angle Imaging SpectroRadiometer (MISR) nonspherical fraction data are used to derive dust and smoke aerosol optical thickness (T(sub dust) and T(sub smoke)) over the tropical Atlantic in a complementary way: due to its wider swath, MODIS has 3-4 times greater sampling than MISR, but MISR dust discrimination is based on particle shape retrievals, whereas an empirical scheme is used for MODIS. MODIS and MISR show very similar dust and smoke winter climatologies. T(sub dust) is the dominant aerosol component over the tropical Atlantic, accounting for 40-70 percent of the total aerosol optical thickness (AOT), whereas T(sub smoke) is significantly smaller than T(sub dust). The consistency and high correlation between these climatologies and their daily variations lends confidence to their use for investigating the relative dust and smoke contributions to the total AOT variation associated with the Madden-Julian Oscillation (MJO). The temporal evolution and spatial patterns of the tdus anomalies associated with the MJO are consistent between MODIS and MISR: the magnitude of MJO-realted T(sub dust) anomalies is comparable to or even larger than that of the total T, while the T(sub smoke) anomaly represents about 15 percent compared to the total, which is quite different from their relative magnitudes to the total T on the climatological time scale. This suggests that dust and smoke are not influenced by the MJO in the same way. Based on correlation analysis, dust is strongly influenced by the MJO-modulated trade wind and precipitation anomalies, and can last as long as one MJO phase, whereas smoke is less affected.

  5. Vertical structure and physical processes of the Madden-Julian Oscillation: Biases and uncertainties at short range

    DOE PAGES

    Xavier, Prince K.; Petch, Jon C.; Klingaman, Nicholas P.; ...

    2015-05-26

    We present an analysis of diabatic heating and moistening processes from 12 to 36 h lead time forecasts from 12 Global Circulation Models as part of the “Vertical structure and physical processes of the Madden-Julian Oscillation (MJO)” project. A lead time of 12–36 h is chosen to constrain the large-scale dynamics and thermodynamics to be close to observations while avoiding being too close to the initial spin-up of the models as they adjust to being driven from the Years of Tropical Convection (YOTC) analysis. A comparison of the vertical velocity and rainfall with the observations and YOTC analysis suggests thatmore » the phases of convection associated with the MJO are constrained in most models at this lead time although the rainfall in the suppressed phase is typically overestimated. Although the large-scale dynamics is reasonably constrained, moistening and heating profiles have large intermodel spread. In particular, there are large spreads in convective heating and moistening at midlevels during the transition to active convection. Radiative heating and cloud parameters have the largest relative spread across models at upper levels during the active phase. A detailed analysis of time step behavior shows that some models show strong intermittency in rainfall and differences in the precipitation and dynamics relationship between models. In conclusion, the wealth of model outputs archived during this project is a very valuable resource for model developers beyond the study of the MJO. Additionally, the findings of this study can inform the design of process model experiments, and inform the priorities for field experiments and future observing systems.« less

  6. Vertical structure and physical processes of the Madden-Julian Oscillation: Biases and uncertainties at short range

    SciTech Connect

    Xavier, Prince K.; Petch, Jon C.; Klingaman, Nicholas P.; Woolnough, Steve J.; Jiang, Xianan; Waliser, Duane E.; Caian, Mihaela; Cole, Jason; Hagos, Samson M.; Hannay, Cecile; Kim, Daehyun; Miyakawa, Tomoki; Pritchard, Michael S.; Roehrig, Romain; Shindo, Eiki; Vitart, Frederic; Wang, Hailan

    2015-05-26

    We present an analysis of diabatic heating and moistening processes from 12 to 36 h lead time forecasts from 12 Global Circulation Models as part of the “Vertical structure and physical processes of the Madden-Julian Oscillation (MJO)” project. A lead time of 12–36 h is chosen to constrain the large-scale dynamics and thermodynamics to be close to observations while avoiding being too close to the initial spin-up of the models as they adjust to being driven from the Years of Tropical Convection (YOTC) analysis. A comparison of the vertical velocity and rainfall with the observations and YOTC analysis suggests that the phases of convection associated with the MJO are constrained in most models at this lead time although the rainfall in the suppressed phase is typically overestimated. Although the large-scale dynamics is reasonably constrained, moistening and heating profiles have large intermodel spread. In particular, there are large spreads in convective heating and moistening at midlevels during the transition to active convection. Radiative heating and cloud parameters have the largest relative spread across models at upper levels during the active phase. A detailed analysis of time step behavior shows that some models show strong intermittency in rainfall and differences in the precipitation and dynamics relationship between models. In conclusion, the wealth of model outputs archived during this project is a very valuable resource for model developers beyond the study of the MJO. Additionally, the findings of this study can inform the design of process model experiments, and inform the priorities for field experiments and future observing systems.

  7. Linkages between the Madden Julian Oscillation, process-level diagnostics and GCM parameterization behavior in YOTC simulations

    NASA Astrophysics Data System (ADS)

    Neale, R. B.; Hannay, C.

    2014-12-01

    The simulation of the Madden Julian Oscillation (MJO) remains a significant challenge in climate models. The primary difficulty lies in relating MJO skill to parameterized physical processes - the main access point for model development. One theory of the MJO relies on scale-interactions from small to large scales. The expectation is that GCMs should reproduce the correct relationships at the smallest resolved scales and this will translate through increasing scales and lead to a skillful simulation of the MJO. So-called 'process-based' diagnostics have recently been applied to simple model fields in order to relate accurate simulation of the MJO to accurate, small-scale process-level relationships (Kim et al., 2014). In this presentation we will take this technique further to provide greater insight into how the underlying physical parameterizations in the Community Atmosphere Model (CAM) conspire to provide the process-level responses in the model, particularly as it relates to precipitation and humidity dependent processes. This provides the potential for a range of dependencies between parameterization tendencies and MJO skill. Furthermore, these dependencies are examined to quantify the effect of model biases. This entails performing the same process-level analysis on simply initialized and nudged CAM simulations that make use of YOTC analysis. These techniques enable diagnosis of the relationship between degrading model simulation (basic state and MJO) and changes in the parameterized response at the process level. In summary, this talk will show the most promising relationships between MJO simulation performance and the fidelity with which the parameterized physics produce observed process-scale relationships.

  8. Heavy precipitation in the southwest of Iran: association with the Madden-Julian Oscillation and synoptic scale analysis

    NASA Astrophysics Data System (ADS)

    Jafar Nazemosadat, M.; Shahgholian, K.

    2017-01-01

    Some important characteristics of the November-April heavy precipitation in southwestern parts of Iran and their linkages to the Madden-Julian Oscillation (MJO) were assessed for the period of 1975-2011. Daily precipitation data in nine meteorological stations spread in various parts of the study area and the corresponding MJO indices were analyzed. For each station, precipitation data were sorted in descending order and those values that fell within 5% of the highest records were categorized as the heavy precipitation. Besides this, the 10% threshold was also analyzed as an axillary assessment. The considered heavy precipitation data (5% threshold) accounted from about 26-35% of total annual precipitation. About half of the heavy precipitation occurred during December-January period and the other half distributed within the months of March, February, November and April by about 17, 14, 13and 6%, respectively. The highest frequency of heavy precipitation was related to the MJO phase 8. After this, the more frequent precipitation events were respectively associated to the phases 2, 7, 1, 6, 5 and 4 of the MJO. For the phases 1, 2, 7 and 8 frequency of the heavy precipitation statistically increased when the MJO amplitude was greater than unity. In contrast, for phases 4 and 5, heavy precipitation was generally linked to the spells that the amplitude size was lower than unity. Formation of a strong north-south oriented cold front mainly in Saudi Arabia and west-east oriented warm fronts in the southwest of Iran were realized as the key elements for initiating heavy precipitation over the study area. Although development of the Mediterranean-based cyclonic circulation is essential for the formation of these fronts, moisture transport mostly originates from northern parts of the Arabian Sea, southern parts of the Red Sea and the Persian Gulf.

  9. Response to Julian et al. (2015) "comment on and reinterpretation of Gabriel et al. (2014) 'fish mercury and surface water sulfate relationships in the everglades protection area'".

    PubMed

    Gabriel, Mark C; Axelrad, Don; Orem, William; Osborne, Todd Z

    2015-06-01

    The purpose of this forum is to respond to a rebuttal submitted by Julian et al., Environ Manag 55:1-5, 2015 where they outlined their overall disagreement with the data preparation, methods, and interpretation of results presented in Gabriel et al. (Environ Manag 53:583-593, 2014). Here, we provide background information on the research premise presented in Gabriel et al. (Environ Manag 53:583-593, 2014) and provide a defense for this work using five themes. In spite of what Julian et al. perceive as limitations in the sampling methods and analytical tools used for this work, the relationships found between fish total mercury and surface water sulfate concentrations in Gabriel et al. (Environ Manag 53:583-593, 2014) are comparable to relationships between pore water methylmercury (MeHg) and pore water sulfate found in past studies indicating that sulfate is important to MeHg production and bioaccumulation in the Everglades. Julian et al. state "…there is no way to justify any ecosystem-wide sulfur strategy as a management approach to reduce mercury risk in the (Everglades) as suggested by Gabriel et al. (Environ Manag 53:583-593, 2014), Corrales et al. (Sci Tot Environ 409:2156-2162, 2011) and Orem et al. (Rev Environ Sci Technol 41 (S1):249-288, 2011)." We disagree, and having stated why sulfate input reduction to the Everglades may be the most effective means of reducing mercury in Everglades fish, it is important that research on sulfur and mercury biogeochemistry continues. If further studies support the relationship between sulfate loading reduction and MeHg reduction, sulfur mass balance studies should commence to (1) better quantify agricultural and connate seawater sulfate inputs and (2) define opportunities to reduce sulfate inputs to the Everglades ecosystem.

  10. Response to Julian et al. (2015) "Comment on and Reinterpretation of Gabriel et al. (2014) `Fish Mercury and Surface Water Sulfate Relationships in the Everglades Protection Area'"

    NASA Astrophysics Data System (ADS)

    Gabriel, Mark C.; Axelrad, Don; Orem, William; Osborne, Todd Z.

    2015-06-01

    The purpose of this forum is to respond to a rebuttal submitted by Julian et al., Environ Manag 55:1-5, 2015 where they outlined their overall disagreement with the data preparation, methods, and interpretation of results presented in Gabriel et al. (Environ Manag 53:583-593, 2014). Here, we provide background information on the research premise presented in Gabriel et al. (Environ Manag 53:583-593, 2014) and provide a defense for this work using five themes. In spite of what Julian et al. perceive as limitations in the sampling methods and analytical tools used for this work, the relationships found between fish total mercury and surface water sulfate concentrations in Gabriel et al. (Environ Manag 53:583-593, 2014) are comparable to relationships between pore water methylmercury (MeHg) and pore water sulfate found in past studies indicating that sulfate is important to MeHg production and bioaccumulation in the Everglades. Julian et al. state "…there is no way to justify any ecosystem-wide sulfur strategy as a management approach to reduce mercury risk in the (Everglades) as suggested by Gabriel et al. (Environ Manag 53:583-593, 2014), Corrales et al. (Sci Tot Environ 409:2156-2162, 2011) and Orem et al. (Rev Environ Sci Technol 41 (S1):249-288, 2011)." We disagree, and having stated why sulfate input reduction to the Everglades may be the most effective means of reducing mercury in Everglades fish, it is important that research on sulfur and mercury biogeochemistry continues. If further studies support the relationship between sulfate loading reduction and MeHg reduction, sulfur mass balance studies should commence to (1) better quantify agricultural and connate seawater sulfate inputs and (2) define opportunities to reduce sulfate inputs to the Everglades ecosystem.

  11. The Modulation of Tropical Storm Activity in the Western North Pacific by the Madden-Julian Oscillation in GEOS-5 AGCM Experiments

    NASA Technical Reports Server (NTRS)

    Kim, Dongmin; Lee, Myong-In; Kim, Hye-Mi; Schubert, Siegfried D.; Yoo, Jin Ho

    2014-01-01

    This study examines the influence of the Madden-Julian Oscillation (MJO) on tropical storm (TS) activity in the western North Pacific, using observations and GEOS-5 simulations at 50-km horizontal resolution. While GEOS-5 produces an MJO of faster propagation and weaker amplitude, it nevertheless reproduces the observed modulation of TS activity by the MJO with the highest TS genesis and increased track density in the active phases of MJO. The study suggests that the simulation of the sub-seasonal variability of TS activity could be improved by improving the simulations of the MJO in climate models.

  12. Response to ?A Madden-Julian Oscillation Event Realistically Simulated by a Global Cloud-Resolving Model?

    SciTech Connect

    Sperber, K R

    2007-12-18

    I agree with the authors that forecasting the Madden-Julian Oscillation (MJO) in a high resolution global model is important for numerous reasons, including improved weather forecast skill beyond 10 days, and resolving small scale features embedded in the MJO that coarse resolution ({approx}100-300km horizontal grid spacing) climate models do not (e.g., tropical cyclones). Unfortunately, the authors promote the (incorrect) overall impression that coarse resolution climate models cannot simulate the MJO by (a) only discussing aspects of works that indicate the poor ability of coarse resolution climate models to simulate the MJO, and (b) by promoting the use of higher resolution models, and the use of embedded two-dimensional cloud resolving models embedded in coarse resolution climate models as the principal methods for realistically representing the MJO because of the difficulty of coarse resolution models 'to estimate the vertical redistribution of heat and moisture by unresolved convective clouds'. Regarding items (a) and (b), I have co-authored two of the works cited by Miura et al. that bemoan the poor ability of coarse resolution climate models to simulate the MJO, and indeed simulating the MJO in coarse resolution climate models is a grand challenge. However, I would like to draw to their attention to work that has demonstrated that two different coarse resolution climate models, using conventional parameterizations of convection and clouds, can represent the MJO with high fidelity. In the later study, where more complete model diagnostics were available, important aspects of the MJO that were realistically represented included the relationship between convection and low-level moisture convergence, surface fluxes, the vertical structure of winds and divergence, and important air-sea interactions. Additionally, regarding item (b), convection is certainly of central importance in representing the MJO, but it is the interaction of convection (parameterized or

  13. On the predictability of the interannual behaviour of the Madden-Julian oscillation and its relationship with El Nino

    SciTech Connect

    Sperber, K.R., LLNL

    1998-03-01

    The Madden-Julian Oscillation (MJO) is the dominant mode of tropical variability at intraseasonal timescales. It displays substantial interannual variability in intensity which may have important implications for the predictability of the coupled system. The reasons for this interannual variability are not understood. The aim of this paper is to investigate whether the interannual behavior of the MJO is related to tropical sea surface temperature (SST) anomalies, particularly El Nino, and hence whether it is predictable. The interannual behavior of the MJO has been diagnosed initially in the 40-year NCEP/ NCAR Reanalysis. The results suggest that prior to the mid-1970s the activity of the MJO was consistently lower than during the latter part of the record. This may be related to either inadequacies in the data coverage, particularly over the tropical Indian Ocean prior to the introduction of satellite observations, or to the real effects of a decadal timescale warming in the tropical SSTs. The teleconnection patterns between interannual variations in MJO activity and SST show only a weak, barely significant, influence of El Nino in which the MJO is more active during the cold phase. As well as the NCEP/NCAR Reanalysis, a 4-member ensemble of 45 year integrations with the Hadley Centre climate model (HadAM2a), forced by observed SSTs for 1949-93, has been used to investigate the relationship between MJO activity and SST. HadAM2a is known to give a reasonable simulation of the MJO and the extended record provided by this ensemble of integrations allows a more robust investigation of the predictability of MJO activity than was possible with the 40-year NCEP/NCAR Reanalysis. The results have shown that, for the uncoupled system, with the atmosphere being driven by imposed SSTS, there is no reproducibility for the activity of the MJO from year to year. The interannual behavior of the MJO is not controlled by the phase of El Nino and would appear to be chaotic in

  14. Role of the Atmospheric Mean State on the Initiation of the Madden-Julian Oscillation in a Tropical Channel Model

    SciTech Connect

    Ray, Pallav; Zhang, Chidong; Moncrieff, Mitch; Dudhia, Jimy; Caron, Julie M.; Leung, Lai-Yung R.; Bruyere, Cindy

    2010-06-08

    Tropical channel models, defined as models that are global in the zonal direction but bounded in the meridional direction, are particularly useful for simulating the Madden-Julian oscillation (MJO) and understanding its physical and dynamical basis. Influences from the extratropics through the lateral boundaries have been found to be essential to the reproduction of the initiation of certain MJO events. This led to a hypothesis that multi-year simulations using a tropical channel model would reproduce reasonable MJO statistics under the influence of prescribed lateral boundary conditions derived from global reanalyses. Interestingly, the MJO statistics in such a multi-year simulation by a high-resolution tropical channel model are not better than those from global climate models. The error in the atmospheric mean state is found to be a possible reason for the poor MJO statistics in the simulation. Nevertheless, even with a large error in the mean state, the multi-year simulation captures two MJO events previously found to be initiated by extratropical influences. However, the model does not reproduce a third event, whose initiation is not directly influenced by the extratropics. This implies that in the absence of dynamical interactions between the MJO and the lateral boundary conditions, the error in the mean state could be sufficient to prevent the MJO initiation. To explore this third MJO event further, a series of sensitivity tests are conducted. These tests show that the simulation of this event is neither critically influenced by the cumulus parameterization employed, nor the initial conditions when the model is integrated 2 weeks prior to the MJO initiation. The model captures this event when the MJO signal is already present in the initial conditions. The use of highresolution sea surface temperature does not improve the simulation of the third MJO event. A higher-resolution nested domain covering the Indo-Pacific warm pool region and including a cloud

  15. Geomorphological map and preliminary analysis of Quaternary sediments in the Planica-Tamar valley (Julian Alps, NW Slovenia)

    NASA Astrophysics Data System (ADS)

    Novak, Andrej; Šmuc, Andrej

    2016-04-01

    The Planica-Tamar valley is located in the Julian Alps in north-west Slovenia. The Planica-Tamar valley represents typical mountain glacial valley bounded by steep, mainly carbonate cliffs with some glacial deposits still preserved. The valley is currently being filled with numerous Holocene sediments deposited by rock falls, landslides, mass gravity flows and fluvial flows. These deposits are forming active or inactive interfingering talus slopes, alluvial and debris-flow fans, all of them with a complex history of sedimentation and erosion forming unconformity bounded sedimentary units. In order to make a thorough analysis of these deposits a detailed geomorphological map in a scale of 1:10 000 has been made. Six different types of sedimentary deposits were defined and mapped. These are moraines, lacustrine sediments, fluvio-glacial deposits, talus slopes, debris fans and alluvial fans. Other mapped features also include shape of ravines, their depths, ridges and direction of sedimentary flow. Additionally areas of active, semi-active and inactive sedimentation were marked. Moraines forms a ridge in the bottom of the valleys and are composed of unconsolidated, poorly sorted, subangular grains ranging from clay size to a few cubic meters big blocks. Lacustrine sediments are represented by laminated well sorted sand and silt, while fluvio-glacial deposits are composed of washed out subrounded sands and gravels. Talus slope deposits are characterised by clast-supported poorly sorted very angular gravel. Debris flow fans are represented by extremely poorly sorted matrix-supported gravels with grain size ranging from clay to few cubic meters big blocks. Alluvial fans are composed by variety of sedimentary textures. Sediments at the fan apex are clast-supported poorly sorted very angular gravels with up to a few cubic meters big block. In the middle part of the fan the sieve deposits are common, while in the distal parts a few centimeters thick layers of sand and

  16. AMIE (ARM MJO Investigation Experiment): Observations of the Madden-Julian Oscillation for Modeling Studies Science Plan

    SciTech Connect

    Long, C; Del Genio, A; Gustafson, W; Houze, R; Jakob, C; Jensen, M; Klein, S; Leung, L Ruby; Liu, X; Luke, E; May, P; McFarlane, S; Minnis, P; Schumacher, C; Vogelmann, A; Wang, Y; Wu, X; Xie, S

    2010-03-22

    Deep convection in the tropics plays an important role in driving global circulations and the transport of energy from the tropics to the mid-latitudes. Understanding the mechanisms that control tropical convection is a key to improving climate modeling simulations of the global energy balance. One of the dominant sources of tropical convective variability is the Madden-Julian Oscillation (MJO), which has a period of approximately 30–60 days. There is no agreed-upon explanation for the underlying physics that maintain the MJO. Many climate models do not show well-defined MJO signals, and those that do have problems accurately simulating the amplitude, propagation speed, and/or seasonality of the MJO signal. Therefore, the MJO is a very important modeling target for the ARM modeling community geared specifically toward improving climate models. The ARM MJO Investigation Experiment (AMIE) period coincides with a large international MJO initiation field campaign called CINDY2011 (Cooperative Indian Ocean experiment on intraseasonal variability in the Year 2011) that will take place in and around the Indian Ocean from October 2011 to January 2012. AMIE, in conjunction with CINDY2011 efforts, will provide an unprecedented data set that will allow investigation of the evolution of convection within the framework of the MJO. AMIE observations will also complement the long-term MJO statistics produced using ARM Manus data and will allow testing of several of the current hypotheses related to the MJO phenomenon. Taking advantage of the expected deployment of a C-POL scanning precipitation radar and an ECOR surface flux tower at the ARM Manus site, we propose to increase the number of sonde launches to eight per day starting in about mid-October of the field experiment year, which is climatologically a period of generally suppressed conditions at Manus and just prior to the climatologically strongest MJO period. The field experiment will last until the end of the MJO

  17. A mechanism-denial study on the Madden-Julian Oscillation with reduced interference from mean state changes

    NASA Astrophysics Data System (ADS)

    Ma, D.; Kuang, Z.

    2015-12-01

    Using the Superparameterized Community Atmosphere Model, the authors investigate the importance of (i) the influences of extratropical and circumnavigating waves, (ii) the wind-evaporation feedback and (iii) the radiative-convective feedback to the Madden-Julian Oscillation (MJO). A common issue with mechanism-denial studies is the interference from mean state changes in the simulations when processes are turned off in the model. In the present study, time-invariant forcing and nudging on an effective time scale longer than the intraseasonal time scale are implemented to maintain the mean state. Forced by perpetual February sea surface temperature, the control simulation is integrated for 15 years, and produces satisfactory climatology. The influence of extratropical waves on the MJO is first examined by relaxing the prognostic variables outside the tropics towards the controlled mean state. When the mean state is not maintained, the MJO activity decreases as the Hadley circulation weakens, consistent with a previous study. However, when the mean state is maintained to be the same as that of the control, the MJO activity does not decrease with the suppression of extratropical waves and remains as strong as that in the control. The results are not sensitive to the latitudes beyond which the extratropical waves are suppressed. To further assess the influence of circumnavigating waves on the MJO, the prognostic variables are relaxed towards the controlled climatology all over the globe except within 40°S-30°N, 0°E-90°W, so that the MJO initiation and propagation are confined in the box. In this experiment, strong MJO activity is produced over the tropical Indian Ocean and Pacific Ocean, and the results suggest that the essential processes for the existence of the MJO are internal to these regions. In the last two experiments, the wind-evaporation and radiative-convective feedback are turned off by prescribing surface flux and radiative heating to the climatology

  18. Physical Mechanisms for the Maintenance of GCM-Simulated Madden-Julian Oscillation over the Indian Ocean and Pacific

    SciTech Connect

    Deng, Liping; Wu, Xiaoqing

    2011-05-05

    The kinetic energy budget is conducted to analyze the physical processes responsible for the improved Madden-Julian Oscillation (MJO) simulated by the Iowa State University general circulation models (ISUGCM). The modified deep convection scheme that includes the revised convection closure, convection trigger condition and convective momentum transport (CMT) enhances the equatorial (10oS-10oN) MJO-related perturbation kinetic energy (PKE) in the upper troposphere and leads to more robust and coherent eastward propagating MJO signal. In the MJO source region-the Indian Ocean (45oE-120oE), the upper-tropospheric MJO PKE is maintained by the vertical convergence of wave energy flux and the barotropic conversion through the horizontal shear of mean flow. In the convectively active region-the western Pacific (120oE-180o), the upper-tropospheric MJO PKE is supported by the convergence of horizontal and vertical wave energy fluxes. Over the central-eastern Pacific (180o-120oW), where convection is suppressed, the upper-tropospheric MJO PKE is mainly due to the horizontal convergence of wave energy flux. The deep convection trigger condition produces stronger convective heating which enhances the perturbation available potential energy (PAPE) production and the upward wave energy fluxes, and leads to the increased MJO PKE over the Indian Ocean and western Pacific. The trigger condition also enhances the MJO PKE over the central-eastern Pacific through the increased convergence of meridional wave energy flux from the subtropical latitudes of both hemispheres. The revised convection closure affects the response of mean zonal wind shear to the convective heating over the Indian Ocean and leads to the enhanced upper-tropospheric MJO PKE through the barotropic conversion. The stronger eastward wave energy flux due to the increase of convective heating over the Indian Ocean and western Pacific by the revised closure is favorable to the eastward propagation of MJO and the

  19. Evaluation of convection-permitting model simulations of cloud populations associated with the Madden-Julian Oscillation using data collected during the AMIE/DYNAMO field campaign

    SciTech Connect

    Hagos, Samson M.; Feng, Zhe; Burleyson, Casey D.; Lim, Kyo-Sun; Long, Charles N.; Wu, Di; Thompson, Gregory

    2014-11-12

    Regional cloud permitting model simulations of cloud populations observed during the 2011 ARM Madden Julian Oscillation Investigation Experiment/ Dynamics of Madden-Julian Experiment (AMIE/DYNAMO) field campaign are evaluated against radar and ship-based measurements. Sensitivity of model simulated surface rain rate statistics to parameters and parameterization of hydrometeor sizes in five commonly used WRF microphysics schemes are examined. It is shown that at 2 km grid spacing, the model generally overestimates rain rate from large and deep convective cores. Sensitivity runs involving variation of parameters that affect rain drop or ice particle size distribution (more aggressive break-up process etc) generally reduce the bias in rain-rate and boundary layer temperature statistics as the smaller particles become more vulnerable to evaporation. Furthermore significant improvement in the convective rain-rate statistics is observed when the horizontal grid-spacing is reduced to 1 km and 0.5 km, while it is worsened when run at 4 km grid spacing as increased turbulence enhances evaporation. The results suggest modulation of evaporation processes, through parameterization of turbulent mixing and break-up of hydrometeors may provide a potential avenue for correcting cloud statistics and associated boundary layer temperature biases in regional and global cloud permitting model simulations.

  20. Greater case-fatality after myocardial infarction among Mexican Americans and women than among non-Hispanic whites and men. The Corpus Christi Heart Project.

    PubMed

    Goff, D C; Ramsey, D J; Labarthe, D R; Nichaman, M Z

    1994-03-01

    Age-adjusted 28-day case-fatality rates were higher among Mexican Americans than among non-Hispanic whites and higher among women than among men hospitalized for definite or possible myocardial infarction in Corpus Christi, Nueces County, Texas, from May 1, 1988, through April 30, 1990. The authors therefore examined whether these higher case-fatality rates were associated with greater prevalence of previously diagnosed coronary heart disease or diabetes; with greater age, frequency of definite myocardial infarction, or congestive heart failure; with higher values of indicators of severity of infarction, including peak creatine phosphokinase levels and scales prognostic of early mortality after myocardial infarction; and with differences in receipt of in-hospital therapy. The overall 28-day case-fatality rate among 1,228 patients hospitalized for myocardial infarction during a 24-month period was 7.3%. After adjustment for age; diabetes; myocardial infarction class (definite vs. possible); congestive heart failure; the Norris and Peel severity indices; peak total creatine phosphokinase; and receipt of thrombolytic therapy, aspirin, calcium channel blockers, beta-blockers, anticoagulants, angioplasty, and bypass surgery, the risk of 28-day case-fatality for Mexican Americans in relation to non-Hispanic whites was 1.49 (95% confidence interval 0.92-2.40). The corresponding risk for women in relation to men was 1.80 (95% confidence interval 1.12-2.89). These findings should alert clinicians to the high-risk status of these groups of patients.

  1. Sources of suspended-sediment loads in the lower Nueces River watershed, downstream from Lake Corpus Christi to the Nueces Estuary, south Texas, 1958–2010

    USGS Publications Warehouse

    Ockerman, Darwin J.; Heitmuller, Franklin T.; Wehmeyer, Loren L.

    2013-01-01

    During 2010, additional suspended-sediment data were collected during selected runoff events to provide new data for model testing and to help better understand the sources of suspended-sediment loads. The model was updated and used to estimate and compare sediment yields from each of 64 subwatersheds comprising the lower Nueces River watershed study area for three selected runoff events: November 20-21, 2009, September 7-8, 2010, and September 20-21, 2010. These three runoff events were characterized by heavy rainfall centered near the study area and during which minimal streamflow and suspended-sediment load entered the lower Nueces River upstream from Wesley E. Seale Dam. During all three runoff events, model simulations showed that the greatest sediment yields originated from the subwatersheds, which were largely cropland. In particular, the Bayou Creek subwatersheds were major contributors of suspended-sediment load to the lower Nueces River during the selected runoff events. During the November 2009 runoff event, high suspended-sediment concentrations in the Nueces River water withdrawn for the City of Corpus Christi public-water supply caused problems during the water-treatment process, resulting in failure to meet State water-treatment standards for turbidity in drinking water. Model simulations of the November 2009 runoff event showed that the Bayou Creek subwatersheds were the primary source of suspended-sediment loads during that runoff event.

  2. Tropical warm pool rainfall variability and impact on upper ocean variability throughout the Madden-Julian oscillation

    NASA Astrophysics Data System (ADS)

    Thompson, Elizabeth J.

    Heating and rain freshening often stabilize the upper tropical ocean, bringing the ocean mixed layer depth to the sea surface. Thin mixed layer depths concentrate subsequent fluxes of heat, momentum, and freshwater in a thin layer. Rapid heating and cooling of the tropical sea surface is important for controlling or triggering atmospheric convection. Ocean mixed layer depth and SST variability due to rainfall events have not been as comprehensively explored as the ocean's response to heating or momentum fluxes, but are very important to understand in the tropical warm pool where precipitation exceeds evaporation and many climate phenomena such as ENSO and the MJO (Madden Julian Oscillation) originate. The first part of the dissertation investigates tropical, oceanic convective and stratiform rainfall variability and determines how to most accurately estimate rainfall accumulation with radar from each rain type. The second, main part of the dissertation uses central Indian Ocean salinity and temperature microstructure measurements and surrounding radar-derived rainfall maps throughout two DYNAMO MJO events to determine the impact of precipitating systems on upper-ocean mixed layer depth and resulting SST variability. The ocean mixed layer was as shallow as 0-5 m during 528/1071 observation hours throughout 2 MJOs (54% of the data record). Out of 43 observation days, thirty-eight near-surface mixed layer depth events were attributed to freshwater stabilization, called rain-formed mixed layers (RFLs). Thirty other mixed layer stratification events were classified as diurnal warm layers (DWLs) due to stable temperature stratification by daytime heating. RFLs and DWLs were observed to interact in two ways: 1) RFLs fill preexisting DWLs and add to total near-surface mixed layer stratification, which occurred ten times; 2) RFLs last long enough to heat, creating a new DWL on top of the RFL, which happened nine times. These combination stratification events were

  3. Influence of geomorphic setting on sedimentation of two adjacent alpine lakes, Triglav Lakes Valley (Julian Alps, NW Slovenia)

    NASA Astrophysics Data System (ADS)

    Smuc, Andrej; Skabene, Dragomir; Muri, Gregor; Vreča, Polona; Jaćimović, Radojko; Čermelj, Branko; Turšič, Janja

    2013-04-01

    The Triglav Lakes Valley is elongated, 7km long depression, located high (at places over 2000 m.a.s.l.) in the central part of the Julian Alps (NW Slovenia). It hosts 6 small isolated lakes that formed due to the combination of Neogene tectonic and Pleistocene glaciation. The study is focused on the 5th and 6th Triglav Valley Lakes that characterize lower part of the valley. The lakes are located so close to each other that they are even connected in times of high water. Thus, they share the same bedrock geology, are subjected to the same climatic forcing and share similar vegetation communities. Despite their proximity, the lakes differ in their hydrologic and geomorphic setting. The lakes have no permanent surface tributaries; however 5th is fed periodically, at times of high water level, by the Močivec spring, while additional water flows from the swamp area near its northern shore. An underground spring on the eastern side of 5th represents the lake's only permanent freshwater inflow, while drainage takes place to the west via a small ponor. 6th has only one weak underground spring on the eastern side of the lake. Water levels may fluctuate between 2 and 3 m. Additionally, the lakes have different configuration of lakes shores; the northern shores of the 5th lake are low-angle soil and debris covered plateau, while southern shores of the 5th lake and shores of the 6th lake are represented by heavily karstified carbonate base rock and covered partly by trees. The detailed sedimentary analysis of the lakes record showed some similarities, but also some significant differences. Sediments of both lakes are represented by fine-grained turbidity current deposits that are transported from lake shores during snow melt or storms. The grain-size and sedimentary rates of the lakes are however markedly different. The 5th lake has coarser grained sediments, with mean ranging from 46 to 60 µm and records higher sedimentation rates of ~0,57 cm/year, compared to the 6th lake

  4. Comment on "Methodology and results of calculating Central California surface temperature trends: evidence of human-induced climate change?" by Christy et al. (2006)

    SciTech Connect

    Bonfils, C; Duffy, P; Lobell, D

    2006-03-28

    Understanding the causes of observed regional temperature trends is essential to projecting the human influences on climate, and the societal impacts of these influences. In their recent study, Christy et al. (2006, hereinafter CRNG06) hypothesized that the presence of irrigated soils is responsible for rapid warming of summer nights occurring in California's Central Valley over the last century (1910-2003), an assumption that rules out any significant effect due to increased greenhouse gases, urbanization, or other factors in this region. We question this interpretation, which is based on an apparent contrast in summer nighttime temperature trends between the San Joaquin Valley ({approx} +0.3 {+-} 0.1 C/decade) and the adjacent western slopes of the Sierra Nevada (-0.25 {+-} 0.15 C/decade), as well as the amplitude, sign and uncertainty of the Sierra nighttime temperature trend itself. We, however, do not dispute the finding of other Sierra and Valley trends. Regarding the veracity of the apparent Sierra nighttime temperature trend, CRNG06 generated the Valley and Sierra time-series using a meticulous procedure that eliminates discontinuities and isolates homogeneous segments in temperature records from 41 weather stations. This procedure yields an apparent cooling of about -0.25 {+-} 0.15 C/decade in the Sierra region. However, because removal of one of the 137 Sierra segments, from the most elevated site (Huntington Lake, 2140m), causes an increase in nighttime temperature trend as large as the trend itself (of +0.25 C/decade, CH06), and leads to a zero trend, the apparent cooling of summer nights in the Sierra regions seems, in fact, largely uncertain.

  5. Rap and Orality in a Post-NCLB/ALEC World

    ERIC Educational Resources Information Center

    Paul, Dierdre Glenn

    2013-01-01

    Rigid foci on accountability, accreditation, and customer service pose significant challenges for literacy educators today. The most consequential identified as the snuffing out of scholastic innovation and erosion of academic freedom. This article recounts a recent experience that occurred while the author prepared a lesson for an undergraduate…

  6. Differences in initial stroke severity between Mexican Americans and non-Hispanic whites vary by age: the Brain Attack Surveillance in Corpus Christi (BASIC) project

    PubMed Central

    Wing, Jeffrey J.; Baek, Jonggyu; Sánchez, Brisa N.; Lisabeth, Lynda D.; Smith, Melinda A.; Morgenstern, Lewis B.; Zahuranec, Darin B.

    2014-01-01

    Background A wide variety of racial and ethnic disparities in stroke epidemiology and treatment have been reported. Race-ethnic differences in initial stroke severity may be one important determinant of differences in outcome after stroke. The overall goal of this study was to move beyond ethnic comparisons in the mean or median severity, and instead investigate ethnic differences in the entire distribution of initial stroke severity. Additionally, we investigated whether age modifies the relationship between ethnicity and initial stroke severity as this may be an important determinant of racial differences in outcome after stroke. Methods Ischemic stroke cases were identified from the population-based Brain Attack Surveillance in Corpus Christi (BASIC) project. National Institutes of Health Stroke Scale (NIHSS) was determined from the medical record or abstracted from the chart. Ethnicity was reported as Mexican American (MA) or non-Hispanic white (NHW). Quantile regression was used to model the distribution of NIHSS score by age category (45–59, 60–74, 75+) to test whether ethnic differences exist over different quantiles of NIHSS (5 percentile increments). Crude models examined the interaction between age category and ethnicity; models were then adjusted for history of stroke/transient ischemic attack, hypertension, atrial fibrillation, coronary artery disease, and diabetes. Results were adjusted for multiple comparisons. Results There were 4,366 ischemic strokes, with median age 72 years (IQR: 61–81), 55% MA and median NIHSS of 4 (IQR: 2–8). MAs were younger, more likely to have a history of hypertension and diabetes, but less likely to have atrial fibrillation compared to NHWs. In the crude model, the ethnicity-age interaction was not statistically significant. After adjustment, the ethnicity-age interaction became significant at the 85th and 95th percentiles of NIHSS distribution. MAs in the younger age category (45–59) were significantly less

  7. The impact of the diurnal cycle on the propagation of Madden-Julian Oscillation convection across the Maritime Continent: DIURNAL CYCLE AND MJO

    SciTech Connect

    Hagos, Samson M.; Zhang, Chidong; Feng, Zhe; Burleyson, Casey D.; De Mott, Charlotte; Kerns, Brandon; Benedict, James J.; Martini, Matus N.

    2016-10-08

    Influences of the diurnal cycle of convection on the propagation of the Madden-Julian Oscillation (MJO) across the Maritime Continent (MC) are examined using cloud-permitting regional model simulations and observations. A pair of ensembles of control (CONTROL) and no-diurnal cycle (NODC) simulations of the November 2011 MJO episode are performed. In the CONTROL simulations, the MJO signal is weakened as it propagates across the MC, with much of the convection stalling over the large islands of Sumatra and Borneo. In the NODC simulations, where the incoming shortwave radiation at the top of the atmosphere is maintained at its daily mean value, the MJO signal propagating across the MC is enhanced. Examination of the surface energy fluxes in the simulations indicates that in the presence of the diurnal cycle, surface downwelling shortwave radiation in CONTROL simulations is larger because clouds preferentially form in the afternoon. Furthermore, the diurnal co-variability of surface wind speed and skin temperature results in a larger sensible heat flux and a cooler land surface in CONTROL compared to NODC simulations. An analysis of observations indicates that the modulation of the downwelling shortwave radiation at the surface by the diurnal cycle of cloudiness negatively projects on the MJO intraseasonal cycle and therefore disrupts the propagation of the MJO across the MC.

  8. Overview of Proposal on High Resolution Climate Model Simulations of Recent Hurricane and Typhoon Activity: The Impact of SSTs and the Madden Julian Oscillation

    NASA Technical Reports Server (NTRS)

    Schubert, Siegfried; Kang, In-Sik; Reale, Oreste

    2009-01-01

    This talk gives an update on the progress and further plans for a coordinated project to carry out and analyze high-resolution simulations of tropical storm activity with a number of state-of-the-art global climate models. Issues addressed include, the mechanisms by which SSTs control tropical storm. activity on inter-annual and longer time scales, the modulation of that activity by the Madden Julian Oscillation on sub-seasonal time scales, as well as the sensitivity of the results to model formulation. The project also encourages companion coarser resolution runs to help assess resolution dependence, and. the ability of the models to capture the large-scale and long-terra changes in the parameters important for hurricane development. Addressing the above science questions is critical to understanding the nature of the variability of the Asian-Australian monsoon and its regional impacts, and thus CLIVAR RAMP fully endorses the proposed tropical storm simulation activity. The project is open to all interested organizations and investigators, and the results from the runs will be shared among the participants, as well as made available to the broader scientific community for analysis.

  9. A Critical Role of Dry Air Intrusion for Propagation of the Madden-Julian Oscillation Based on Multi-model Simulations

    NASA Astrophysics Data System (ADS)

    Jiang, X.

    2015-12-01

    The Madden-Julian Oscillation (MJO) exerts pronounced influences on global climate and extreme weather systems. Our current general circulation models (GCMs), however, exhibit rather limited capability in representing this prominent tropical variability mode. Meanwhile, fundamental physics of the MJO are still elusive. In this presentation, by analyzing 27 climate models that participated in the WCRP-WWRP/THORPEX YOTC MJO Task Force and GEWEX GASS global MJO model inter-comparison project, key processes responsible for realistic MJO simulations are explored based on budget analysis of moist static energy (MSE). Results suggest that horizontal advection of MSE, particularly the dry air intrusion from the west of the MJO convection, plays a crucial role for realistic eastward propagation of the MJO in GCM simulations. Due to model deficiencies in simulating both the MJO circulation and spatial distribution of background MSE, the horizontal advection of MSE is greatly underestimated in the poor MJO models, and largely offset by effects from radiative and surface fluxes, leading to rather weak eastward or even westward propagation of MJO convection in those models.

  10. Variability in moist static energy budget associated with the Madden-Julian Oscillation over the eastern Maritime Continent during CINDY2011/DYNAMO extended observing period

    NASA Astrophysics Data System (ADS)

    Yokoi, S.

    2015-12-01

    In this study, we examine variability in the moist static energy (MSE) budget over eastern Maritime Continent during the CINDY2011/DYNAMO extended observing period (from October 2011 through March 2012) associated with five convective disturbance events that can be recognized as the Madden-Julian oscillation (MJO). It reveals that the surface fluxes and radiative heating contribute to the maintenance of the amplitude of column-integrated MSE anomaly, and thus to the intensity of the MJO. The vertical and horizontal advection terms contribute to the phase progression and possibly eastward propagation of MJO. The contribution of the vertical advection is mainly due to lower-tropospheric decent after the precipitation and MSE maxima, presumably associated with rain re-evaporation, while that of the horizontal advection is due to so-called dry intrusion. We also argue impact of several assumptions used in recent idealized models of the MJO on the MSE budget. The assumptions we examined include (1) the column-integrated radiative heating anomaly is taken proportional to the column water vapor, and (2) the anomaly in vertical advection of MSE is taken proportional to that of dry static energy (in other words, the normalized gross moist stability is taken constant). We demonstrate that the assumption 1 tends to speed up the phase progression, while the assumption 2 tends to slow it down.

  11. Modulation of Heavy Rainfall in the Middle East and North Africa by Madden-Julian Oscillation Using High Resolution Atmospheric General Circulation Model

    NASA Astrophysics Data System (ADS)

    Deng, L.; Stenchikov, G. L.; McCabe, M. F.; Bangalath, H. K.

    2014-12-01

    Recently, the modulation of subtropical rainfall by the dominant tropical intraseasonal signal of the Madden-Julian Oscillation (MJO), has been explored through the discussion of the MJO-convection-induced Kelvin and Rossby wave related teleconnection patterns. Our study focuses on characterizing the modulation of heavy rainfall in the Middle East and North Africa (MENA) region by the MJO, using the Geophysical Fluid Dynamics Laboratory (GFDL) global High Resolution Atmospheric Model (HIRAM) simulations (25-km; 1979-2012) and a combination of available atmospheric products from satellite, in-situ and reanalysis data. The observed Hadley Centre Global Sea Ice and Sea Surface Temperature (HadISST) and the simulated SST from GFDL's global coupled carbon-climate Earth System Models (ESM2M) are employed in HIRAM to investigate the sensitivity of the simulated heavy rainfall and MJO to SST. The future trend of the extreme rainfalls and their links to the MJO response to climate change are examined using HIRAM simulations of 2012-2050 with the RCP4.5 and RCP 8.5 scenarios to advance the possibility of characterization and forecasting of future extreme rainfall events in the MENA region.

  12. The Madden-Julian Oscillation in the National Center for Atmospheric Research Community Atmospheric Model-2 with the Tiedtke Convective Scheme

    SciTech Connect

    Liu, P; Wang, B; Sperber, K R; Li, T; Meehl, G A

    2004-07-26

    The boreal winter Madden-Julian oscillation (MJO) remains very weak and irregular in structure in the National Center for Atmospheric Research (NCAR) Community Atmosphere Model version 2 (CAM2) as in its direct predecessor, the Community Climate Model version 3 (CCM3). The standard version of CAM2 uses the deep convective scheme of Zhang and McFarlane (1995), as in CCM3, with the closure dependent on convective available potential energy (CAPE). Here, sensitivity tests using several versions of the Tiedtke (1989) convective scheme are conducted. Typically, the Tiedtke convection scheme gives an improved mean state, intraseasonal variability, space-time power spectra, and eastward propagation compared to the standard version of the model. Coherent eastward propagation of MJO related precipitation is also much improved, particularly over the Indian-western Pacific Oceans. Sensitivity experiments show that enhanced downdrafts in the Tiedtke scheme reduces the amplitude of the MJO but to a lesser extent than when this scheme is closed on CAPE to represent deep convections. A composite life cycle of the model MJO indicates that over the Indian Ocean wind induced surface heat exchange functions, while over the western/central Pacific Ocean aspects of frictional moisture convergence are evident in the maintenance and eastward propagation of the oscillation.

  13. Evaluation of the impacts of the Madden-Julian Oscillation on rainfall and hurricanes in Central and South America and the Atlantic Ocean using ICI-RAFT

    NASA Astrophysics Data System (ADS)

    Giovannettone, J. P.

    2013-12-01

    Based on the method of Regional Frequency Analysis (RFA) and L-moments (Hosking & Wallis, 1997), a tool was developed to estimate the frequency/intensity of a rainfall event of a particular duration using ground-based rainfall observations. Some of the code used to develop this tool was taken from the FORTRAN code provided by Hosking & Wallis and rewritten in Visual Basic 2010. This tool was developed at the International Center for Integrated Water Resources Management (ICIWaRM) and is referred to as the ICIWaRM Regional Analysis of Frequency Tool (ICI-RAFT) (Giovannettone & Wright, 2012). In order to study the effectiveness of ICI-RAFT, three case studies were selected for the analysis. The studies take place in selected regions within Argentina, Nicaragua, and Venezuela. Rainfall data were provided at locations throughout each country; total rainfall for specific periods were computed and analyzed with respect to several global climate indices using lag times ranging from 1 to 6 months. Each analysis attempts to identify a global climate index capable of predicting above or below average rainfall several months in advance, qualitatively and using an equation that is developed. The index that had the greatest impact was the MJO (Madden-Julian Oscillation), which is the focus of the current study. The MJO is considered the largest element of intra-seasonal (30 - 90 days) variability in the tropical atmosphere and, unlike other indices, is characterized by the eastward propagation of large areas of convective anomalies near the equator, propagating from the Indian Ocean east into the Pacific Ocean. The anomalies are monitored globally using ten different indices located on lines of longitude near the equator, with seven in the eastern hemisphere and three in the western hemisphere. It has been found in previous studies that the MJO is linked to summer rainfall in Southeast China (Zhang et al., 2009) and southern Africa (Pohl et al., 2007) and to rainfall patterns

  14. Comparison of Moist Static Energy and Budget between the GCM-Simulated Madden–Julian Oscillation and Observations over the Indian Ocean and Western Pacific

    SciTech Connect

    Wu, Xiaoqing; Deng, Liping

    2013-07-01

    The moist static energy (MSE) anomalies and MSE budget associated with the Madden–Julian oscillation (MJO) simulated in the Iowa State University General Circulation Model (ISUGCM) over the Indian and Pacific Oceans are compared with observations. Different phase relationships between MJO 850-hPa zonal wind, precipitation, and surface latent heat flux are simulated over the Indian Ocean and western Pacific, which are greatly influenced by the convection closure, trigger conditions, and convective momentum transport (CMT). The moist static energy builds up from the lower troposphere 15–20 days before the peak of MJO precipitation, and reaches the maximum in the middle troposphere (500–600 hPa) near the peak of MJO precipitation. The gradual lower-tropospheric heating and moistening and the upward transport of moist static energy are important aspects of MJO events, which are documented in observational studies but poorly simulated in most GCMs. The trigger conditions for deep convection, obtained from the year-long cloud resolving model (CRM) simulations, contribute to the striking difference between ISUGCM simulations with the original and modified convection schemes and play the major role in the improved MJO simulation in ISUGCM. Additionally, the budget analysis with the ISUGCM simulations shows the increase in MJO MSE is in phase with the horizontal advection of MSE over the western Pacific, while out of phase with the horizontal advection of MSE over the Indian Ocean. However, the NCEP analysis shows that the tendency of MJO MSE is in phase with the horizontal advection of MSE over both oceans.

  15. Effects of moisture feedback in a frictional coupled Kelvin-Rossby wave model and implication in the Madden-Julian oscillation dynamics

    NASA Astrophysics Data System (ADS)

    Liu, Fei; Wang, Bin

    2017-01-01

    The authors extend the original frictional wave dynamics and implement the moisture feedback (MF) to explore the effects of planetary boundary layer (PBL) process and the MF on the Madden-Julian Oscillation (MJO). This new system develops the original frictional wave dynamics by including the moisture tendency term (or the MF mode), along with a parameterized precipitation based on the Betts-Miller scheme. The linear instability analysis of this model provides solutions to elucidate the behaviors of the "pure" frictional convergence (FC) mode and the "pure" MF mode, respectively, as well as the behaviors of the combined FC-MF mode or the dynamical moisture mode. These results show that without the PBL frictional moisture convergence, the MF mode is nearly stationary and damped. Not only does the PBL frictional feedback make the damping MF mode grow with preferred planetary scale but it also enables the nearly stationary MF mode to move eastward slowly, resulting in an oscillation with a period of 30-90 days. This finding suggests the important role of the frictional feedback in generating eastward propagating unstable modes and selecting the preferred planetary scales. The MF process slows down the eastward-propagating short-wave FC mode by delaying the occurrence of deep convection and by enhancing the Rossby wave component. However, the longest wave (wavenumber one) is insensitive to the MF or the convective adjustment time, indicating that the unstable longest wave is primarily controlled by PBL frictional feedback process. Implications of these theoretical results in MJO simulation in general circulation models are discussed.

  16. Impacts of upscale heat and momentum transfer by moist Kelvin waves on the Madden-Julian oscillation: a theoretical model study

    NASA Astrophysics Data System (ADS)

    Liu, Fei; Wang, Bin

    2013-01-01

    The Madden-Julian oscillation (MJO) is observed to interact with moist Kelvin waves. To understand the role of this interaction, a simple scale-interaction model is built, which describes the MJO modulation of moist Kelvin waves and the feedback from moist Kelvin waves through upscale eddy heat and momentum transfer. The backward-tilted moist Kelvin waves produce eddy momentum transfer (EMT) characterized by the lower-tropospheric westerly winds and eddy heat transfer (EHT) that warms the mid-troposphere. The EHT tends to induce the lower-tropospheric easterly winds and low pressure, which is located in front of the "westerly wind burst" induced by the EMT. Adding the eddy forcing to a neutral MJO skeleton model, we show that the EHT provides an instability source for the MJO by warming up the mid-troposphere, and the EMT offers an additional instability source by enhancing the lower-tropospheric westerly winds. The eddy forcing selects eastward propagation for the unstable mode, because it generates positive/negative eddy available potential energy for the eastward/westward modes by changing their thermal and dynamical structures. The present results show that moist Kelvin waves can provide a positive feedback to the MJO only when they are located within (or near) the convective complex (center) of the MJO. The EHT and EMT feedback works positively in the front and rear part of the MJO, respectively. These theoretical results suggest the potential importance of moist Kelvin waves in sustaining the MJO and encourage further observations to document the relationship between moist Kelvin waves and the MJO.

  17. Cloud object analysis of CERES Aqua observations of tropical and subtropical cloud regimes: Evolution of cloud object size distributions during the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Xu, Kuan-Man; Wong, Takmeng; Dong, Shengtao; Chen, Feng; Kato, Seiji; Taylor, Patrick C.

    2017-02-01

    In this study, we analyze cloud object data from the Aqua satellite between July 2006 and June 2010 that are matched with the real-time multivariate Madden-Julian Oscillation (MJO) index to examine the impact of MJO evolution on the evolutions of the size distributions of cloud object types. These types include deep convective (DC), cirrostratus, shallow cumulus, stratocumulus and overcast-stratus. A cloud object is a contiguous region of the earth with a single dominant cloud-system type. It is found that the cloud object size distributions of some phases depart greatly from the 8-phase combined distribution at large cloud-object diameters. The large-size group of cloud objects contributes to most of the temporal variations during the MJO evolution. For deep convective and cirrostratus cloud objects, there is a monotonic increase in both the number and footprint of large objects from the depressed to mature phases, which is attributed to the development and maturing of deep convection and anvils. The largest increase in the mean diameter during the mature phases that lasts to the early dissipating phase is related to growth of anvil clouds and is accompanied by moderate decreases in small-size objects. For shallow cumulus, the large objects decrease in number at the mature phases, but increase in number for both sizes before the mature phase. The opposite is true for the large overcast-stratus objects. The temporal evolution of large stratocumulus objects is similar to that of deep convective and cirrostratus object types except for peaking slightly earlier.

  18. [Filosofical legacy of Julian Marias].

    PubMed

    Pérez Pérez, Félix

    2006-01-01

    Julián Marías was a philosopher, a prolific writer member of the Royal Academy of the Spanish Language, Prince of Asturias award in 1996. Marías thought could only be explained in the context of his life and his long term relation to Ortega y Gasset, both co-founded the Instituto de Humanidades. Between the late 1940s and the 1970s Marías taught at numerous institutions in the United States. Marías wrote on a wide variety of subjects during his long career, his History of Philosophy is widely regarded as the greatest work in the Spanish language on the history of philosphy.

  19. Modelling the Madden Julian Oscillation

    SciTech Connect

    Slingo, J M; Inness, P M; Sperber, K R

    2004-05-21

    The MJO has long been an aspect of the global climate that has provided a tough test for the climate modelling community. Since the 1980s there have been numerous studies of the simulation of the MJO in atmospheric general circulation models (GCMs), ranging from Hayashi and Golder (1986, 1988) and Lau and Lau (1986), through to more recent studies such as Wang and Schlesinger (1999) and Wu et al. (2002). Of course, attempts to reproduce the MJO in climate models have proceeded in parallel with developments in our understanding of what the MJO is and what drives it. In fact, many advances in understanding the MJO have come through modeling studies. In particular, failure of climate models to simulate various aspects of the MJO has prompted investigations into the mechanisms that are important to its initiation and maintenance, leading to improvements both in our understanding of, and ability to simulate, the MJO. The initial focus of this chapter will be on modeling the MJO during northern winter, when it is characterized as a predominantly eastward propagating mode and is most readily seen in observations. Aspects of the simulation of the MJO will be discussed in the context of its sensitivity to the formulation of the atmospheric model, and the increasing evidence that it may be a coupled ocean-atmosphere phenomenon. Later, we will discuss the challenges regarding the simulation of boreal summer intraseasonal variability, which is more complex since it is a combination of the eastward propagating MJO and the northward propagation of the tropical convergence zone. Finally some concluding remarks on future directions in modeling the MJO and its relationship with other timescales of variability in the tropics will be made.

  20. Simulation of streamflow and suspended-sediment concentrations and loads in the lower Nueces River watershed, downstream from Lake Corpus Christi to the Nueces Estuary, South Texas, 1958-2008

    USGS Publications Warehouse

    Ockerman, Darwin J.; Heitmuller, Franklin T.

    2010-01-01

    The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers-Fort Worth District, City of Corpus Christi, Guadalupe-Blanco River Authority, San Antonio River Authority, and San Antonio Water System, developed, calibrated, and tested a Hydrological Simulation Program ? FORTRAN (HSPF) watershed model to simulate streamflow and suspended-sediment concentrations and loads during 1958-2008 in the lower Nueces River watershed, downstream from Lake Corpus Christi to the Nueces Estuary in South Texas. Data available to simulate suspended-sediment concentrations and loads consisted of historical sediment data collected during 1942-82 in the study area and suspended-sediment concentration data collected periodically by the USGS during 2006-07 at three USGS streamflow-gaging stations, Nueces River near Mathis, Nueces River at Bluntzer, and Nueces River at Calallen. The Nueces River near Mathis station is downstream from Wesley E. Seale Dam, completed in 1958 to impound Lake Corpus Christi. Suspended-sediment data collected before and after completion of Wesley E. Seale Dam provide insights to the effects of the dam and reservoir on suspended-sediment loads transported by the lower Nueces River from downstream of the dam to the Nueces Estuary. Annual suspended-sediment loads at a site near the Nueces River at Mathis station were considerably lower, for a given annual mean discharge, after the dam was completed than before the dam was completed. Most of the suspended sediment transported by the Nueces River downstream from Wesley E. Seale Dam occurred during high-flow releases from the dam or during floods. During October 1964-September 1971, about 532,000 tons of suspended sediment were transported by the Nueces River near Mathis. Of this amount, about 473,000 tons, or about 89 percent, were transported by large runoff events (mean streamflow exceeding 1,000 cubic feet per second). To develop the watershed model to simulate suspended

  1. Development and Evaluation of ALEC Micro-Wand IIIe (tradename) Training

    DTIC Science & Technology

    1994-08-01

    those who used the procedural workbook. Problems effectiveness of two types of instructional workbook. encountered during the study are identified and...dis- ~ ED One workbook type emphasized a procedural, cus, 9d, which should be helpful to project engineers •-• () "step-by-step" approach to learning...technology. The study examined change theory and recent views on teaching and learning, and tested the relative effectiveness of two types of

  2. Obituary: Thomas Julian Ahrens (1936-2010)

    NASA Astrophysics Data System (ADS)

    Jeanloz, Raymond; Asimow, Paul

    2011-12-01

    Thomas J. Ahrens, a leader in the use of shock waves to study planetary interiors and impact phenomena, died at his home in Pasadena, California on November 24, 2010, at the age of 74. He was the California Institute of Technology's Fletcher Jones Professor of Geophysics, formally emeritus since 2005 but professionally active to the end. Tom was a pioneer in experimental and numerical studies of the effects of hypervelocity impact, arguably the most important geophysical process in the formation, growth and - in many cases - surface evolution of planets. As a professor at Caltech, he established the foremost university laboratory for shock wave experiments, where students and research associates from around the world pursued basic research in geophysics, planetary science and other disciplines. Previously, high-pressure shock experiments were primarily conducted in national laboratories, where they were initially associated with development of nuclear weapons. The shock wave laboratory at Caltech was noted for key measurements addressing major questions in planetary geophysics. Equation-of-state studies on silicate melts showed that magma deep in Earth's mantle could be denser than the coexisting crystals, implying downward transport of melts (and associated heat) rather than the upward eruption of lavas observed in volcanic regions at Earth's surface. Shock-melting experiments on iron at pressures of Earth's core provide a crucial constraint on the temperature at the center of our planet. And studies of hydrous, carbonate and sulphate minerals under shock compression document how climate-altering molecules can be released by major impacts, such as the K/T event associated with the most recent mass extinction of biota in Earth history. In addition, Tom was a leader in numerical simulation of cratering, bringing the most recent laboratory measurements into the modeling of planetary impacts. Tom's training was in geophysics and applied experimental physics, as exemplified by the ultrasonic wave-velocity measurements of his Ph.D. research at Rensselaer Polytechnic Institute (geophysics Ph.D. in 1962, following a B.S. in geology and geophysics from Massachusetts Institute of Technology in 1957, and M.S. in geophysics from Caltech in 1958). He served in the U.S. Army (1959-60) and was employed at Stanford Research Institute (1962-67), where he conducted shock wave experiments, before joining the faculty at Caltech in 1967. With such a broad background, Tom combined condensed-matter physics, continuum mechanics, petrology and seismology, for instance in characterizing polymorphic phase transformations in Earth's mantle (1967 J. Geophys. Res. Paper with Y. Syono); using shock wave measurements to interpret seismological data on Earth's deep interior (1969 Rev. Geophysics paper with D. L. Anderson and A. E. Ringwood); modeling geodynamic effects of phase-transition kinetics (1975 Rev. Geophysics paper with G. Shubert); characterizing the effects of gravity and crustal strength on crater formation (1981 Rev. Geophysics paper with J. D. O'Keefe); and quantifying impact erosion of terrestrial planetary atmospheres (1993 Annual Review of Earth and Planetary Sciences). The span of his science was also reflected in collaborations with - among others - Paul D. Asimow, George R. Rossman and Edward M. Stolper at Caltech, as well as Arthur C. Mitchell and William J. Nellis at Lawrence Livermore National Laboratory. His accomplishments included conducting the first shock-wave experiments on lunar samples and solid hydrogen; measuring the first absorption spectra of minerals under shock loading; discovering major phase changes in CaO, FeO, KAlSi3O8, and KFeS2; measuring shock temperatures in silicates, metals, and oxides; conducting the first planetary cratering calculations for mass of melted and vaporized material, and mass and energy of ejecta as a function of planetary escape velocity; experimentally documenting shock vaporization on volatile-bearing minerals, and applying the results to understanding the formation of oceans and atmospheres; conducting the first dynamic-compression experiments on molten silicates, with applications to characterizing the maximum depth of volcanism on terrestrial planets, as well as the crystallization sequence of magma oceans; performing the first thermodynamic calculations delineating the impact-shock conditions for melting and vaporization of planetary materials; carrying out the first smoothed particle hydrodynamic calculations to investigate energy partitioning upon impact in self-gravitating planetary systems; and conducting the first quantitative tensile failure studies for brittle media, relating crack-density to elastic velocity deficits and the onset of damage. Tom was also Co-Investigator on the NASA Cosmic Dust Analyzer Experiment, and the NASA/ESA Cassini Mission to Saturn. Honors included the AGU Hess Medal, Geological Society of America Day Medal, Meteoritical Society Barringer Medal, APS Shock Compression of Condensed Matter' Topical Groups's Duvall Medal and AAAS Newcomb-Cleveland Prize. He had been President of AGU's Tectonophysics Section, Editor of Journal of Geophysical Research, founding member of both the Mineral and Rock Physics and Study of Earth's Deep Interior focus groups, and Editor - more like key driving force - for AGU's Handbook of Physical Constants. He was a fellow of the AGU, American Academy of Arts and Sciences, American Association for the Advancement of Science, and Geochemical Society; and member of the U.S. National Academy of Sciences, as well as Foreign Associate of the Russian Academy of Sciences. Main-belt asteroid 4739 Tomahrens (1985 TH1) was named after him. Tom made it clear, however, that it was his students (more than 30), research associates (15 or more) and many collaborators who were the real mark of success. No doubt driven by the need to sustain a major, expensive research facility, as well as to satisfy an inner drive, he maintained a daunting work schedule - including evenings, weekends and holidays - that challenged and stimulated so many around him, perhaps even frightening or frustrating some. He could play as hard as he worked, enjoying sailing, skiing and other outdoor activities over the years.

  3. Observations of the temporal variability in aerosol properties and their relationships to meteorology in the summer monsoonal South China Sea/East Sea: the role of monsoonal flows, the Madden-Julian Oscillation, tropical cyclones, squall lines and cold pools

    NASA Astrophysics Data System (ADS)

    Reid, J. S.; Lagrosas, N. D.; Jonsson, H. H.; Reid, E. A.; Sessions, W. R.; Simpas, J. B.; Uy, S. N.; Boyd, T. J.; Atwood, S. A.; Blake, D. R.; Campbell, J. R.; Cliff, S. S.; Holben, B. N.; Holz, R. E.; Hyer, E. J.; Lynch, P.; Meinardi, S.; Posselt, D. J.; Richardson, K. A.; Salinas, S. V.; Smirnov, A.; Wang, Q.; Yu, L. E.; Zhang, J.

    2014-08-01

    In a joint NRL/Manila Observatory mission, as part of the 7 SouthEast Asian Studies program (7SEAS), a two-week, late September~2011 research cruise in the northern Palawan Archipelago was undertaken to observe the nature of southwest monsoonal aerosol particles in the South China Sea/East Sea (SCS/ES) and Sulu Sea region. Previous analyses suggested this region as a~receptor for biomass burning from Borneo and Sumatra for boundary layer air entering the monsoonal trough. Anthropogenic pollution and biofuel emissions are also ubiquitous, as is heavy shipping traffic. Here, we provide an overview of the regional environment during the cruise, a time series of key aerosol and meteorological parameters, and their interrelationships. Overall, this cruise provides a~narrative of the processes that control regional aerosol loadings and their possible feedbacks with clouds and precipitation. While 2011 was a moderate El Nino/Southern Oscillation (ENSO) La Nina year, higher burning activity and lower precipitation was more typical of neutral conditions. The large-scale aerosol environment was modulated by the Madden-Julian Oscillation (MJO) and its associated tropical cyclone (TC) activity in a manner consistent with the conceptual analysis performed by Reid et al. (2012). Advancement of the MJO from phase 3 to 6 with accompanying cyclogenesis during the cruise period strengthened flow patterns in the SCS/ES that modulated aerosol lifecycle. TC inflow arms of significant convection sometimes span from Sumatra to Luzon, resulting in very low particle concentrations (minimum condensation nuclei CN < 150 cm-3, non-sea salt PM2.5=1μg m-3). However, elevated carbon monoxide levels were occasionally observed suggesting passage of polluted air masses whose aerosol particles had been rained out. Conversely, two drier periods occurred with higher aerosol particle concentrations originating from Borneo and Southern Sumatra (CN > 3000 cm-3 and non-sea salt PM2.510-25 μg m-3). These

  4. 33 CFR 165.808 - Corpus Christi Ship Channel, Corpus Christi, TX, safety zone.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Petroleum Gas, the waters within a 500 yard radius of the LPG carrier while the vessel transits the Corpus... within a 500 yard radius of the LPG carrier while the vessel departs the LPG facility and transits...

  5. 76 FR 18395 - Safety Zone; Naval Air Station Corpus Christi Air Show, Oso Bay, Corpus Christi, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-04

    ..., Ocean Drive Bridge over Oso Bay, (27N 42'36.2'', -97W 18'31.4'') running south to the point (27N 41'50.4'', - 97W 18'52.4''), running southeast to the Turtle Cove Park (27N 41'3.3'', -97W 17'55.6'') and running... zone resembles a triangle running from the Ocean Drive Bridge over Oso Bay south to the point in...

  6. Madden-Julian Oscillation simulated in BCC climate models

    NASA Astrophysics Data System (ADS)

    Zhao, Chongbo; Ren, Hong-Li; Song, Lianchun; Wu, Jie

    2015-12-01

    This study evaluates the ability of four versions BCC (Beijing Climate Center or National Climate Center) models (BCC_AGCM2.1, BCC_AGCM2.2, BCC_CSM1.1 and BCC_CSM1.1m) in simulating the MJO phenomenon using the outputs of the AMIP (Atmospheric Model Intercomparison Project) and historical runs. In general, the models can simulate some major characteristics of the MJO, such as the intensity, the periodicity, the propagation, and the temporal/spatial evolution of the MJO signals in the tropics. There are still some biases between the models and the observation/reanalysis data, such as the overestimated total intraseasonal variability, but underestimated MJO intensity, shorter significant periodicity, and excessive westward propagation. The differences in the ability of simulating the MJO between AMIP and historical experiments are also significant. Compared to the AMIP runs, the total intraseasonal variability is reduced and more realistic, however the ratio between the MJO and its westward counterpart decreases in the historical runs. This unrealistic simulation of the zonal propagation might have been associated with the greater mean precipitation over the Pacific and corresponded to the exaggeration of the South Pacific Convergence Zone structure in precipitation mean state. In contrast to the T42 versions, the improvement of model resolution demonstrate more elaborate topography, but the enhanced westward propagation signals over the Arabia Sea followed. The underestimated (overestimated) MJO variability over eastern Indian Ocean (Pacific) was assumed to be associated with the mean state. Three sets of sensitive experiments using BCC_CSM1.1m turn out to support this argument.

  7. Understanding the temporal characteristics of the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Toma, V. E.; Webster, P. J.; Stephens, G. L.; Johnson, R. H.

    2012-12-01

    One of the great mysteries existing in the climate of the tropics is the background physics that define the 20-60 day period band of intraseasonal variability and the variance that occurs within it. Although the modal structure of the oscillations appears to match some of the spatial characteristics of normal modes of the tropics, there is no match between theoretical temporal structure and that which is observed. A previous paper (Stephens et al. 2004) defined the MJO as a self-regulating oscillator with three distinct phases: destabilization, convective and restoring. Whereas these three phases appear endemic among the variety of intraseasonal oscillations observed in the tropics, the theory provides little information about the temporal structure of the MJO or its variation within the observed range. We extend the exploration of the thermodynamic self-regulation of the MJO by including an ocean-atmosphere interaction component. We use a semi-empirical ocean -atmosphere coupled model (developed initially by Agudelo 2007) consisting of the Kantha-Clayson single column ocean layer model coupled to an empirical atmospheric model comprised of empirically derived linear relationships between atmospheric variables and SST. The result is a broad spectrum of OLR and surface winds in the 20-60 day range supporting the hypothesis that local coupling between the ocean and the atmosphere. Specifically, the time-scale of the self-regulation is mainly due to feedbacks between SST and both convective activity and surface wind speed control that the evolution of the surface radiative and latent heat fluxes in the model. The sensitivity of the response to imposed ocean-mixed layer depth suggests why intraseasonal variability has specific genesis locations with the tropics. The implications of these results for the prediction of the MJO and the interpretation of the DYNAMO results are discussed. Agudelo, P. A., 2007: Role of local thermodynamic coupling in the life cycle of the intraseasonal oscillation in the indo-pacific warm pool, PhD. Dissertation, School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Stephens, G. L., P. J. Webster, R. H. Johnson, R. Engelen and T. L'Ecuyer, 2004: Observational Evidence for the Mutual Regulation of the Tropical Hydrological Cycle and Tropical Sea Surface Temperatures. J. Climate: 17(11), 2213-2224.

  8. A Composite Study of the Madden-Julian Oscillation

    DTIC Science & Technology

    1992-01-01

    significantly lower. Also, the magnitude 78 of the vertical motion is 1.5 to 2.0 times greater during the warm ypars . The differences in magnitude...assimilation procedure used is absolutely necessary to compare and evaluate results from different models. There is also the possibility of aliasing of data...statistics and data evaluation . NCAR Technical Note, Boulder, CO, NCAR TN-300 + STR, 94 pp. Vincent, D.G., K.H. North, R.A. Velasco, and P.G. Ramsey, 1991

  9. Observations of the temporal variability in aerosol properties and their relationships to meteorology in the summer monsoonal South China Sea/East Sea: the scale-dependent role of monsoonal flows, the Madden-Julian Oscillation, tropical cyclones, squall lines and cold pools

    NASA Astrophysics Data System (ADS)

    Reid, J. S.; Lagrosas, N. D.; Jonsson, H. H.; Reid, E. A.; Sessions, W. R.; Simpas, J. B.; Uy, S. N.; Boyd, T. J.; Atwood, S. A.; Blake, D. R.; Campbell, J. R.; Cliff, S. S.; Holben, B. N.; Holz, R. E.; Hyer, E. J.; Lynch, P.; Meinardi, S.; Posselt, D. J.; Richardson, K. A.; Salinas, S. V.; Smirnov, A.; Wang, Q.; Yu, L.; Zhang, J.

    2015-02-01

    In a joint NRL/Manila Observatory mission, as part of the Seven SouthEast Asian Studies program (7-SEAS), a 2-week, late September 2011 research cruise in the northern Palawan archipelago was undertaken to observe the nature of southwest monsoonal aerosol particles in the South China Sea/East Sea (SCS/ES) and Sulu Sea region. Previous analyses suggested this region as a receptor for biomass burning from Borneo and Sumatra for boundary layer air entering the monsoonal trough. Anthropogenic pollution and biofuel emissions are also ubiquitous, as is heavy shipping traffic. Here, we provide an overview of the regional environment during the cruise, a time series of key aerosol and meteorological parameters, and their interrelationships. Overall, this cruise provides a narrative of the processes that control regional aerosol loadings and their possible feedbacks with clouds and precipitation. While 2011 was a moderate El Niño-Southern Oscillation (ENSO) La Niña year, higher burning activity and lower precipitation was more typical of neutral conditions. The large-scale aerosol environment was modulated by the Madden-Julian Oscillation (MJO) and its associated tropical cyclone (TC) activity in a manner consistent with the conceptual analysis performed by Reid et al. (2012). Advancement of the MJO from phase 3 to 6 with accompanying cyclogenesis during the cruise period strengthened flow patterns in the SCS/ES that modulated aerosol life cycle. TC inflow arms of significant convection sometimes span from Sumatra to Luzon, resulting in very low particle concentrations (minimum condensation nuclei CN < 150 cm-3, non-sea-salt PM2.5 < 1 μg m-3). However, elevated carbon monoxide levels were occasionally observed suggesting passage of polluted air masses whose aerosol particles had been rained out. Conversely, two drier periods occurred with higher aerosol particle concentrations originating from Borneo and Southern Sumatra (CN > 3000 cm-3 and non-sea-salt PM2.5 10-25 μg m

  10. ALEC (Aggregate Lifecycle Effectiveness and Cost): A Model for Analyzing the Cost-Effectiveness of Air Force Enlisted Personnel Policies. Volume 2. Documentation and User’s Guide.

    DTIC Science & Technology

    1987-08-01

    CLASSIFICATION OF This PAGE (Wmn D Entered) PAGE READ INSTRUCTIONSREPORT DOCUMENTATION BEFORE COMPLETING FORM r I REPORT NUMBER GOVT ACCESSION NO. 3...an Identify by block nuinlf) See reverse side DO D I ,, 1473 UNCLASSIFIED SECURITY CLAI VIICATION OF THIS PAGE ,hen Dts Enteredi) * - - !’ *.-O...Policies (Documentation and User’s Guide) C. Peter Rydell August 1987 Prepared for The United States Air Force Accesioli NTIS Ai D TI C T A,5 By RAND

  11. Jersey-Style Neoliberalism: Governor Christopher Christie, Crony Capitalism, and the Politics of K-12 Education

    ERIC Educational Resources Information Center

    Murphy, Jason P.; Strothers, Atiya S.; Lugg, Catherine A.

    2017-01-01

    In this article, Murphy, Strothers, and Lugg, focus on one urban center, Newark, as an illustrative case study of how New Jersey's brand of neoliberal politics has shaped the political agency of those who live in the communities served by New Jersey's public schools. The city, like other New Jersey locales, has had a long history of political…

  12. Citgo Refining and Chemicals Company, Corpus Christi West, 2007 Petition for Objection to Title V Permit

    EPA Pesticide Factsheets

    This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Petition Database available at www2.epa.gov/title-v-operating-permits/title-v-petition-database. Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

  13. Flow and Suspended Sediment Events in the Near-Coastal Zone off Corpus Christi, Texas

    DTIC Science & Technology

    2003-09-30

    an electrozone and an in-situ light scattering instrument. Two-dimensional fractal dimensions (D2) and derived volume distributions were...Project, funded by the Texas General Land Office (TGLO), which provides funding to doctoral students to develop real-time sensing and modeling of the...Ojo and M. Sterling (in press), Sensing the coastal environment. Building the European Capacity in Operational Oceanography - Proceedings of the

  14. Delineation of marsh types from Corpus Christi Bay, Texas, to Perdido Bay, Alabama, in 2010

    USGS Publications Warehouse

    Enwright, Nicholas M.; Hartley, Stephen B.; Couvillion, Brady R.; Michael G. Brasher,; Jenneke M. Visser,; Michael K. Mitchell,; Bart M. Ballard,; Mark W. Parr,; Barry C. Wilson,

    2015-07-23

    This study incorporates about 9,800 ground reference locations collected via helicopter surveys in coastal wetland areas. Decision-tree analyses were used to classify emergent marsh vegetation types by using ground reference data from helicopter vegetation surveys and independent variables such as multitemporal satellite-based multispectral imagery from 2009 to 2011, bare-earth digital elevation models based on airborne light detection and ranging (lidar), alternative contemporary land cover classifications, and other spatially explicit variables. Image objects were created from 2010 National Agriculture Imagery Program color-infrared aerial photography. The final classification is a 10-meter raster dataset that was produced by using a majority filter to classify image objects according to the marsh vegetation type covering the majority of each image object. The classification is dated 2010 because the year is both the midpoint of the classified multitemporal satellite-based imagery (2009–11) and the date of the high-resolution airborne imagery that was used to develop image objects. The seamless classification produced through this work can be used to help develop and refine conservation efforts for priority natural resources.

  15. 76 FR 18391 - Safety Zone; Texas International Boat Show Power Boat Races; Corpus Christi Marina, Corpus...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-04

    ... zone will be implemented for the 15 minutes before each race or race heat. The same methods of... safety zone approximately 15 minutes following the conclusion of each race or race heat when the power... race heat. Vessels may transit through the safety zone with permission from the Captain of the...

  16. 75 FR 66301 - Amendment of Class E Airspace; Corpus Christi, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-28

    ....) Ingleside, T.P. McCampbell Airport, TX (Lat. 27 54'47'' N., long. 97 12'41'' W.) Robstown, Nueces County....3-mile radius of Nueces County Airport, and within a 7.6-mile radius of Aransas County Airport,...

  17. 75 FR 31677 - Amendment of Class E Airspace; Corpus Christi, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-04

    ....) Ingleside, T.P. McCampbell Airport, TX (Lat. 27 54'47'' N., long. 97 12'41'' W.) Robstown, Nueces County... Airport, and within a 6.3-mile radius of Nueces County Airport, and within a 7.6-mile radius of...

  18. Case Study: Structural Evaluation of Steel Truss Aircraft Hangars at Corpus Christi Army Depot, Texas.

    DTIC Science & Technology

    1999-02-01

    information essential for improving future reports. 1. Does this report satisfy a need? (Comment on purpose, related project, or other area of interest...AND BENDING STRESSES: HOTE THAT EVALUATION ALLOWABLE STRESSES ARE EQUAL TO DESIGN ALLOWABLE STRESSES DIVIDED BT THE FACTORS OF SAFETY ORIGINALLY

  19. Statistical and Economic Evaluation of the Bearing Maintenance Capability and Assets at Corpus Christi Army Depot

    DTIC Science & Technology

    1981-03-27

    4.2.5 C/T Transmission . . . . . . . . . 4-13 4.2.6 B/T Transmission . . . . . . . . . 4-17 4.2.7 DIT Transmission. . . . . . . . . 4-17 4.2.8 Rotor ...C/T TRANSMISSION COST BREAKDOWN ...... .............. 4-7 4-8 D/T TRANSMISSION COST BREAKDOWN ............... .. 4-8 4-9 ROTOR HEAD/COrZROL COST...TRANSMISSION CANDIDATES ..... ............... .... 4-18 4-17 D/T TRANSMISSION CANDIDATES ...... ............... . ....- 19 4-18 ROTOR HEAD/CONTROL CANDIDATES

  20. Moistening Processes for Madden-Julian Oscillation over Indian Ocean and Maritime Continent

    NASA Astrophysics Data System (ADS)

    Hung, C. S.; Sui, C. H.

    2015-12-01

    The moistening processes for MJO over Indian Ocean (IO) and Maritime Continent (MC) are investigated through a diagnosis of ECMWF Re-analysis (ERA-Interim) data in Nov.-April, 1982-2011. During this period, 27 MJO events with strong magnitude and clear propagation are identified and further classified as either primary, or successive, according to the existence of preceding event. While the successive events are analyzed in composite fields, the primary events will be explored individually. A composite of scale-separated lower-tropospheric (1000-700 hPa) moisture (qL) budget is analyzed in four stages: suppressed, cloud developing, convective and decaying, each corresponding to the RMM index phase 567(781), 81(23), 2(4), and 34(56), respectively, for IO (MC). In the suppressed stage, the dominant moisture source over both region is surface evaporation/shallow convection (-Q2). Nonlinear zonal (meridional) advection by synoptic disturbances also has non-negligible contribution over IO (MC). In the cloud developing stage, qLapproaches maximum with moistening tendency to its east. This moistening is contributed by the advection of mean moisture by anomalous easterlies associated with downstream Rossby wave response of the dry anomaly and boundary layer moisture convergence. In the convective stage, while the zonal advection of anomalous westerlies and intense precipitation dries the atmosphere, the moistening of meridional advection by downstream Rossby anti-cyclonic gyres leads to the eastward propagation of deep convection. In the decaying stage, the strong westerlies bring in dry air from the west causing widespread drying. Overall, the moisture evolution of MC is consistent with IO expect meridional component is more essential in suppressed stage. A column-integrated moist static energy (MSE) budget is also analyzed to further identify the role of radiation and surface flux. The result shows that longwave heating is the dominant energy source in convective stage and latent heat flux is more prominent in decaying stage when the westerly is strong. The in-phase relation of longwave heating with column-integrated MSE suggests that longwave heating acts to maintain MSE and retard the propagation. Latent heat flux also slows down the propagation due to the phase lag.

  1. A Framework for Assessing Operational Madden–Julian Oscillation Forecasts: A CLIVAR MJO Working Group Project

    SciTech Connect

    Gottschalck, J.; Wheeler, M.; Weickmann, K.; Vitart, F.; Savage, N.; Lin, H.; Hendon, H.; Waliser, D.; Sperber, K.; Nakagawa, M.; Prestrelo, C.; Flatau, M.; Higgins, W.

    2010-09-01

    The U.S. Climate Variability and Predictability (CLIVAR) MJO Working Group (MJOWG) has taken steps to promote the adoption of a uniform diagnostic and set of skill metrics for analyzing and assessing dynamical forecasts of the MJO. Here we describe the framework and initial implementation of the approach using real-time forecast data from multiple operational numerical weather prediction (NWP) centers. The objectives of this activity are to provide a means to i) quantitatively compare skill of MJO forecasts across operational centers, ii) measure gains in forecast skill over time by a given center and the community as a whole, and iii) facilitate the development of a multimodel forecast of the MJO. The MJO diagnostic is based on extensive deliberations among the MJOWG in conjunction with input from a number of operational centers and makes use of the MJO index of Wheeler and Hendon. This forecast activity has been endorsed by the Working Group on Numerical Experimentation (WGNE), the international body that fosters the development of atmospheric models for NWP and climate studies. The Climate Prediction Center (CPC) within the National Centers for Environmental Prediction (NCEP) is hosting the acquisition of the forecast data, application of the MJO diagnostic, and real-time display of the standardized forecasts. The activity has contributed to the production of 1–2-week operational outlooks at NCEP and activities at other centers. Further enhancements of the diagnostic's implementation, including more extensive analysis, comparison, illustration, and verification of the contributions from the participating centers, will increase the usefulness and application of these forecasts and potentially lead to more skillful predictions of the MJO and indirectly extratropical and other weather variability (e.g., tropical cyclones) influenced by the MJO. The purpose of this article is to inform the larger scientific and operational forecast communities of the MJOWG forecast effort and invite participation from additional operational centers.

  2. A Framework for Assessing Operational Madden–Julian Oscillation Forecasts: A CLIVAR MJO Working Group Project

    DOE PAGES

    Gottschalck, J.; Wheeler, M.; Weickmann, K.; ...

    2010-09-01

    The U.S. Climate Variability and Predictability (CLIVAR) MJO Working Group (MJOWG) has taken steps to promote the adoption of a uniform diagnostic and set of skill metrics for analyzing and assessing dynamical forecasts of the MJO. Here we describe the framework and initial implementation of the approach using real-time forecast data from multiple operational numerical weather prediction (NWP) centers. The objectives of this activity are to provide a means to i) quantitatively compare skill of MJO forecasts across operational centers, ii) measure gains in forecast skill over time by a given center and the community as a whole, and iii)more » facilitate the development of a multimodel forecast of the MJO. The MJO diagnostic is based on extensive deliberations among the MJOWG in conjunction with input from a number of operational centers and makes use of the MJO index of Wheeler and Hendon. This forecast activity has been endorsed by the Working Group on Numerical Experimentation (WGNE), the international body that fosters the development of atmospheric models for NWP and climate studies. The Climate Prediction Center (CPC) within the National Centers for Environmental Prediction (NCEP) is hosting the acquisition of the forecast data, application of the MJO diagnostic, and real-time display of the standardized forecasts. The activity has contributed to the production of 1–2-week operational outlooks at NCEP and activities at other centers. Further enhancements of the diagnostic's implementation, including more extensive analysis, comparison, illustration, and verification of the contributions from the participating centers, will increase the usefulness and application of these forecasts and potentially lead to more skillful predictions of the MJO and indirectly extratropical and other weather variability (e.g., tropical cyclones) influenced by the MJO. The purpose of this article is to inform the larger scientific and operational forecast communities of the MJOWG forecast effort and invite participation from additional operational centers.« less

  3. Informativeness of Wind Data in Linear Madden-Julian Oscillation Prediction

    DTIC Science & Technology

    2016-08-15

    time series decay with time – exponentially , in the case of a postulated sys- tem obeying dx/dt=−BX+ noise. In a multi-channel LIM (where a ‘channel... exponential function has those behaviors in addition to the simple decay of the real exponential function. In fitting a LIM from data, one postulates that those...the autocorrelation decay rate esti- mated at different lags is similar, then indeed the decay curve must be close to exponential , which bolsters the

  4. The Living and the Dead in Education: Commentary on Julian Williams

    ERIC Educational Resources Information Center

    Jones, Peter E.

    2011-01-01

    Jean Lave and Ray McDermott (2002) did a service with their powerful reading of Marx's 1844 essay on "Estranged Labour" (Marx, 1964). In reworking Marx's critique of "alienated labour" in terms of "alienated learning," they reminded everyone of Marx's own impassioned revolt against the inhumanity of the capitalist order and found a novel way of…

  5. Application of terrestrial photogrammetry for the mass balance calculation on Montasio Occidentale Glacier (Julian Alps, Italy)

    NASA Astrophysics Data System (ADS)

    Piermattei, Livia; Carturan, Luca; Calligaro, Simone; Blasone, Giacomo; Guarnieri, Alberto; Tarolli, Paolo; Dalla Fontana, Giancarlo; Vettore, Antonio

    2014-05-01

    Digital elevation models (DEMs) of glaciated terrain are commonly used to measure changes in geometry and hence infer the mass balance of glaciers. Different tools and methods exist to obtain information about the 3D geometry of terrain. Recent improvements on the quality and performance of digital cameras for close-range photogrammetry, and the development of automatic digital photogrammetric processing makes the 'structure from motion' photogrammetric technique (SfM) competitive for high quality 3D models production, compared to efficient but also expensive and logistically-demanding survey technologies such as airborn and terrestrial laser scanner (TLS). The purpose of this work is to test the SfM approach, using a consumer-grade SLR camera and the low-cost computer vision-based software package Agisoft Photoscan (Agisoft LLC), to monitor the mass balance of Montasio Occidentale glacier, a 0.07km2, low-altitude, debris-covered glacier located in the Eastern Italian Alps. The quality of the 3D models produced by the SfM process has been assessed by comparison with digital terrain models obtained through TLS surveys carried out at the same dates. TLS technique has indeed proved to be very effective in determining the volume change of this glacier in the last years. Our results shows that the photogrammetric approach can produce point cloud densities comparable to those derived from TLS measurements. Furthermore, the horizontal and vertical accuracies are also of the same order of magnitude as for TLS (centimetric to decimetric). The effect of different landscape characteristics (e.g. distance from the camera or terrain gradient) and of different substrata (rock, debris, ice, snow and firn) was also evaluated in terms of SfM reconstruction's accuracy vs. TLS. Given the good results obtained on the Montasio Occidentale glacier, it can be concluded that the terrestrial photogrammetry, with the advantageous features of portability, ease of use and above all low costs, allows to obtain high-resolution DEMs which enable good mass balance estimations on glaciers with similar characteristics.

  6. Charter Schools Don't Serve Black Children Well: An Interview with Julian Vasquez Heilig

    ERIC Educational Resources Information Center

    Richardson, Joan

    2017-01-01

    The NAACP, nation's largest civil rights organization, steps up its opposition to charter schools just as a president and new education secretary appear ready to kick the sector into high gear. In 2016, the NAACP passed a resolution calling on a moratorium on the expansion of charter schools, citing concerns about transparency and accountability,…

  7. The Madden-Julian Oscillation in the NCAR Community Earth System Model Coupled Data Assimilation System

    NASA Astrophysics Data System (ADS)

    Chatterjee, A.; Anderson, J. L.; Moncrieff, M.; Collins, N.; Danabasoglu, G.; Hoar, T.; Karspeck, A. R.; Neale, R. B.; Raeder, K.; Tribbia, J. J.

    2014-12-01

    We present a quantitative evaluation of the simulated MJO in analyses produced with a coupled data assimilation (CDA) framework developed at the National Center for Atmosphere Research. This system is based on the Community Earth System Model (CESM; previously known as the Community Climate System Model -CCSM) interfaced to a community facility for ensemble data assimilation (Data Assimilation Research Testbed - DART). The system (multi-component CDA) assimilates data into each of the respective ocean/atmosphere/land model components during the assimilation step followed by an exchange of information between the model components during the forecast step. Note that this is an advancement over many existing prototypes of coupled data assimilation systems, which typically assimilate observations only in one of the model components (i.e., single-component CDA). The more realistic treatment of air-sea interactions and improvements to the model mean state in the multi-component CDA recover many aspects of MJO representation, from its space-time structure and propagation (see Figure 1) to the governing relationships between precipitation and sea surface temperature on intra-seasonal scales. Standard qualitative and process-based diagnostics identified by the MJO Task Force (currently under the auspices of the Working Group on Numerical Experimentation) have been used to detect the MJO signals across a suite of coupled model experiments involving both multi-component and single-component DA experiments as well as a free run of the coupled CESM model (i.e., CMIP5 style without data assimilation). Short predictability experiments during the boreal winter are used to demonstrate that the decay rates of the MJO convective anomalies are slower in the multi-component CDA system, which allows it to retain the MJO dynamics for a longer period. We anticipate that the knowledge gained through this study will enhance our understanding of the MJO feedback mechanisms across the air-sea interface, especially regarding ocean impacts on the MJO as well as highlight the capability of coupled data assimilation systems for related tropical intraseasonal variability predictions.

  8. North Pacific - North American Circulation and Precipitation Anomalies Associated With the Madden-Julian Oscillation

    DTIC Science & Technology

    2006-03-01

    Amer. Meteor. Soc., 77, 1275-1277. Lorenz, D. J., and D. L. Hartmann, 2006: The effect of the MJO on the North American Monsoon . J. Climate ...extratropical wave train extending from southeast Asia into the NPNA region. ................................................ 92 Figure 55. Wheeler phase...extratropical wave train extending from southeast Asia into the NPNA region......................... 98 Figure 59. 200-hPa height anomaly for a composite of

  9. An observational and theoretical study of the structure and propagation of the Madden-Julian Oscillation

    NASA Astrophysics Data System (ADS)

    Adames, Angel F.

    This study is compososed of two parts. In the first part of this dissertation, the large-scale circulation features that determine the structure and evolution of MJO- related moisture and precipitation fields are examined using a linear analysis protocol based on daily 850- minus 150-hPa global velocity potential data. The analysis is augmented by a compositing procedure that emphasizes the structural features over the Indo-Pacific warm pool sector (60°E--180°) that give rise to the eastward propagation of the enhanced moisture and precipitation. It is found that boundary layer (BL) convergence in the low level easterlies to the east of the region of maximum ascent produces a deep but narrow plume of equa- torial ascent that moistens the mid-troposphere, while weakly diffluent flow above the BL spreads moisture away from the equator. Vertical advection of moisture from this plume of ascent accounts for the eastward propagation of the positive moisture anomalies across the Maritime Continent into the western Pacific. When the convection is first developing over the Indian Ocean, horizontal moisture advection contributes to both the eastward propagation and the amplification of the positive moisture anomalies along the equator to the east of the region of enhanced convection. The results of the first part of the dissertation are used to develop a linear wave theory for the MJO, shown in part two. The theory is largely based on a framework previously developed by Sobel and Maloney. In this treatment, column moisture is the only prognostic variable and the horizontal wind is diagnosed as the forced Kelvin and Rossby wave responses to an equatorial heat source/sink. In contrast to the original framework, the meridional and vertical structure of the basic equations are treated explicitly, and values of several key model parameters are adjusted, based on observations. A dispersion relation is derived that adequately describes the MJO's signal in the wavenumber-frequency spectrum and defines the MJO as a dispersive equatorial moist wave with a westward group velocity. On the basis of linear regression analysis of satellite and reanalysis data, it is estimated that the MJO's group velocity is ˜40% as large as its phase speed. This dispersion is the result of the anomalous winds in the wave modulating the mean distribution of moisture such that the moisture anomaly propagates eastward while wave activity propagates westward. The moist wave grows through feedbacks involving moisture, clouds and radia- tion, and is damped by the advection of moisture associated with the Rossby wave. Additionally, a zonal wavenumber dependence is found in cloud-radiation feedbacks which causes growth to be strongest at planetary scales. Our results suggest that this wavenumber dependence arises from the non-local nature of cloud-radiation feed-backs; that is, anomalous convection spreads upper-level clouds and reduces radiative cooling over an extensive area surrounding the anomalous precipitation.

  10. Characteristics Associated with the Madden-Julian Oscillation at Manus Island

    SciTech Connect

    Deng, Liping; McFarlane, Sally A.; Flaherty, Julia E.

    2013-05-15

    Ground-based high temporal and vertical resolution datasets from 2002 to 2008 of observations at the Atmospheric Radiation Measurement (ARM) Tropical Western Pacific (TWP) site on Manus Island, Papua New Guinea are used to examine the evolution of clouds and rainfall associated with the MJO life cycle. A composite MJO event is developed based on the NOAA MJO Index 4 using 13 events. The analysis shows that the cloud evolution during the composited MJO life cycle depicts a two-phase structure consisting of a development phase and a mature phase. During the development phase, congestus is the most important cloud type; during the mature phase, deep convection is the dominant cloud type. Consistent with this two-phase structure, the heavy rainfall frequency also shows a two-peak structure during the MJO life cycle. Light rainfall does not show a clear relation to the MJO life cycle, but shows variability on shorter time scales. From the development phase to the mature phase, the MJO structure shifts from the Type I to Type II structure, showing a different phase relationship between convection and dynamic fields (or wave motion) in the development and mature phases. During the shift, mid-level clouds play an important role in moving moisture to the mid-troposphere and preparing the atmosphere for the following deep convection. The discharge-recharge theory explains some of observed features of the MJO evolution at the ARM TWP Manus Island site.

  11. Communication and interpersonal skills for nurses Shirley Bach Communication and interpersonal skills for nurses and Alec Grant Learning Matters 192pp £17 978 1 84445 162 3 1844451623 [Formula: see text].

    PubMed

    2009-12-09

    Poor communication between healthcare professionals and their patients is often cited as the key reason why care standards fail. This small, concise text equips novice nurses with the skills they need to provide effective and safe care. It will also help readers to develop their interpersonal skills.

  12. Archive of digital and digitized analog boomer seismic reflection data collected during USGS cruise 96CCT02 in Copano, Corpus Christi, and Nueces Bays and Corpus Christi Bayou, Texas, July 1996

    USGS Publications Warehouse

    Harrison, Arnell S.; Dadisman, Shawn V.; Kindinger, Jack G.; Morton, Robert A.; Blum, Mike D.; Wiese, Dana S.; Subiño, Janice A.

    2007-01-01

    In June of 1996, the U.S. Geological Survey conducted geophysical surveys from Nueces to Copano Bays, Texas. This report serves as an archive of unprocessed digital boomer seismic reflection data, trackline maps, navigation files, GIS information, cruise log, and formal FGDC metadata. Filtered and gained digital images of the seismic profiles and high resolution scanned TIFF images of the original paper printouts are also provided. The archived trace data are in standard Society of Exploration Geophysicists (SEG) SEG-Y format (Barry and others, 1975) and may be downloaded and processed with commercial or public domain software such as Seismic Unix (SU). Example SU processing scripts and USGS software for viewing the SEG-Y files (Zihlman, 1992) are also provided.

  13. The Video in the Classroom: Agatha Christie's "Evil Under the Sun" and the Teaching of Narratology through Film.

    ERIC Educational Resources Information Center

    Kokonis, Michael

    This paper suggests ways in which video can be used in teaching college literature and cinema courses in order to promote audiovisual literacy. The method proposed presupposes an approach to narrative through narratology, the discipline that examines texts of narrative fiction as narratives, irrespective of their mode of manifestation (verbal,…

  14. Regular and Novel Metonymy: Can You Curl up with a Good Agatha Christie in Your Second Language?

    ERIC Educational Resources Information Center

    Slabakova, Roumyana; Cabrelli Amaro, Jennifer; Kyun Kang, Sang

    2016-01-01

    This article presents results of two off-line comprehension tasks investigating the acceptability of unconventional and conventional metonymy by native speakers of Korean and Spanish who speak English as a second language. We are interested in discovering whether learners differentiate between conventional and unconventional metonymy, and whether…

  15. Residential Ethnic Segregation and Stroke Risk in Mexican Americans: The Brain Attack Surveillance in Corpus Christi Project

    PubMed Central

    Patel, Rajiv C; Baek, Jonggyu; Smith, Melinda A; Morgenstern, Lewis B; Lisabeth, Lynda D

    2015-01-01

    Objective Residential ethnic segregation may operate through multiple mechanisms to increase stroke risk. The current study evaluated if residential ethnic segregation was associated with stroke risk in a bi-ethnic population. Design Incident strokes were identified in Nueces County, Texas from 2000 to 2010. Residential ethnic segregation (range: 0–1) was derived for each census tract in the county (n=64) using 2000 U.S Census data, and categorized into: predominantly non-Hispanic white (NHW, <0.3); ethnically mixed (0.3–0.7); predominantly Mexican American (MA, >0.7). Multilevel Poisson regression models were fitted separately for NHWs and MAs to assess the association between residential ethnic segregation (predominantly NHW referent) and relative risk for stroke, adjusted for age category, sex and census tract-level median per capita income. Effect modification by age was also examined. Results In adjusted models, residential ethnic segregation was not associated with stroke risk in either ethnic group. Effect modification by age was significant in both groups. Young MAs and NHWs living in predominantly MA census tracts were at greater relative risk for stroke than those living in predominantly NHW census tracts, but this association was only significant for MAs [MAs: RR = 2.38 (95% CI: 1.31–4.31); NHWs: RR = 1.53 (95% CI: 0.92–2.52)]. Conclusion Our findings demonstrate that residential ethnic segregation may influence downstream stroke risk in young MAs. Pathways between residential ethnic segregation and stroke in young MAs should be explored. PMID:25812246

  16. Excess stroke in Mexican Americans compared with non-Hispanic Whites: the Brain Attack Surveillance in Corpus Christi Project.

    PubMed

    Morgenstern, Lewis B; Smith, Melinda A; Lisabeth, Lynda D; Risser, Jan M H; Uchino, Ken; Garcia, Nelda; Longwell, Paxton J; McFarling, David A; Akuwumi, Olubumi; Al-Wabil, Areej; Al-Senani, Fahmi; Brown, Devin L; Moyé, Lemuel A

    2004-08-15

    Mexican Americans are the largest subgroup of Hispanics, the largest minority population in the United States. Stroke is the leading cause of disability and third leading cause of death. The authors compared stroke incidence among Mexican Americans and non-Hispanic Whites in a population-based study. Stroke cases were ascertained in Nueces County, Texas, utilizing concomitant active and passive surveillance. Cases were validated on the basis of source documentation by board-certified neurologists masked to subjects' ethnicity. From January 2000 to December 2002, 2,350 cerebrovascular events occurred. Of the completed strokes, 53% were in Mexican Americans. The crude cumulative incidence was 168/10,000 in Mexican Americans and 136/10,000 in non-Hispanic Whites. Mexican Americans had a higher cumulative incidence for ischemic stroke (ages 45-59 years: risk ratio = 2.04, 95% confidence interval: 1.55, 2.69; ages 60-74 years: risk ratio = 1.58, 95% confidence interval: 1.31, 1.91; ages >or=75 years: risk ratio = 1.12, 95% confidence interval: 0.94, 1.32). Intracerebral hemorrhage was more common in Mexican Americans (age-adjusted risk ratio = 1.63, 95% confidence interval: 1.24, 2.16). The subarachnoid hemorrhage age-adjusted risk ratio was 1.57 (95% confidence interval: 0.86, 2.89). Mexican Americans experience a substantially greater ischemic stroke and intracerebral hemorrhage incidence compared with non-Hispanic Whites. As the Mexican-American population grows and ages, measures to target this population for stroke prevention are critical.

  17. Comparison of active and passive surveillance for cerebrovascular disease: The Brain Attack Surveillance in Corpus Christi (BASIC) Project.

    PubMed

    Piriyawat, Paisith; Smajsová, Miriam; Smith, Melinda A; Pallegar, Sanjay; Al-Wabil, Areej; Garcia, Nelda M; Risser, Jan M; Moyé, Lemuel A; Morgenstern, Lewis B

    2002-12-01

    To provide a scientific rationale for choosing an optimal stroke surveillance method, the authors compared active surveillance with passive surveillance. The methods involved ascertaining cerebrovascular events that occurred in Nueces County, Texas, during calendar year 2000. Active methods utilized screening of hospital and emergency department logs and routine visiting of hospital wards and out-of-hospital sources. Passive means relied on International Classification of Diseases, Ninth Revision (ICD-9), discharge codes for case ascertainment. Cases were validated by fellowship-trained stroke neurologists on the basis of published criteria. The results showed that, of the 6,236 events identified through both active and passive surveillance, 802 were validated to be cerebrovascular events. When passive surveillance alone was used, 209 (26.1%) cases were missed, including 73 (9.1%) cases involving hospital admission and 136 (17.0%) out-of-hospital strokes. Through active surveillance alone, 57 (7.1%) cases were missed. The positive predictive value of active surveillance was 12.2%. Among the 2,099 patients admitted to a hospital, passive surveillance using ICD-9 codes missed 73 cases of cerebrovascular disease and mistakenly included 222 noncases. There were 57 admitted hospital cases missed by active surveillance, including 13 not recognized because of human error. This study provided a quantitative means of assessing the utility of active and passive surveillance for cerebrovascular disease. More uniform surveillance methods would allow comparisons across studies and communities.

  18. Status, trends, and changes in freshwater inflows to bay systems in the Corpus Christi Bay National Estuary Program study area

    USGS Publications Warehouse

    Asquith, W.H.; Mosier, J. G.; Bush, P.W.

    1997-01-01

    The watershed simulation model Hydrologic Simulation Program—Fortran (HSPF) was used to generate simulated flow (runoff) from the 13 watersheds to the six bay systems because adequate gaged streamflow data from which to estimate freshwater inflows are not available; only about 23 percent of the adjacent contributing watershed area is gaged. The model was calibrated for the gaged parts of three watersheds—that is, selected input parameters (meteorologic and hydrologic properties and conditions) that control runoff were adjusted in a series of simulations until an adequate match between model-generated flows and a set (time series) of gaged flows was achieved. The primary model input is rainfall and evaporation data and the model output is a time series of runoff volumes. After calibration, simulations driven by daily rainfall for a 26-year period (1968–93) were done for the 13 watersheds to obtain runoff under current (1983–93), predevelopment (pre-1940 streamflow and pre-urbanization), and future (2010) land-use conditions for estimating freshwater inflows and for comparing runoff under the three land-use conditions; and to obtain time series of runoff from which to estimate time series of freshwater inflows for trend analysis.

  19. 78 FR 13015 - Foreign-Trade Zone 122-Corpus Christi, Tx; Application for Reorganization Under Alternative Site...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-26

    ... Alternative Site Framework An application has been submitted to the Foreign-Trade Zones (FTZ) Board (the Board... zone under the alternative site framework (ASF) adopted by the Board (15 CFR 400.2(c)). The ASF is...

  20. EFFECTS OF WHOLE SEDIMENTS FROM CORPUS CHRISTI BAY ON SURVIVAL, GROWTH AND REPRODUCTION OF THE MYSID, MYSIDOPSIS BAHIA

    EPA Science Inventory

    Estuarine and marine coastlines are receiving waters for many anthropogenic substances. Concentrations of many of these contaminants have been diminished by regulatory control of effluents, but there is concern that continuing inputs (non-point sources) and contaminants contained...

  1. Water levels and salinities of water within the Evangeline Aquifer in an area southwest of Corpus Christi, Texas

    USGS Publications Warehouse

    Rettman, Paul

    1983-01-01

    Specific conductance, indicating the salinity of collected water samples, ranged from 940 micromhos per centimeter to 6,900 micromhos per centimeter. High values of specific conductance may be due to failure of well casings. Well casing failure is suspected in a few other wells also.

  2. Christie Gardens Apartments and Care Inc. and the Ontario Long Term Care Association: long term care recruitment and retention project.

    PubMed

    Cooper, Nancy

    2010-05-01

    In 2008, the Ontario Long Term Care Association was awarded funding from HealthForceOntario to assist with its nursing recruitment strategy based on research it had initiated in 2007. The research goal was to understand the career motivations and perceptions of students enrolled in registered nursing (RN) and registered practical nursing (RPN) programs in Ontario to develop and test a message to support recruitment.

  3. Multiscale Asymptotics for the Skeleton of the Madden-Julian Oscillation and Tropical-Extratropical Interactions (Open Access)

    DTIC Science & Technology

    2015-11-30

    dry variables are considered, but it occurs in the moist model here through interactions with water vapor and convective activity. Keywords: tropical...11, 12]. It is an equatorial wave envelope of complex multi-scale convective processes, coupled with planetary- scale (≈10,000-40,000 km) circulation...anomalies. Individual MJO events prop- agate eastward at a speed of roughly 5 m/s, and their convective signal is most prominent over the Indian and

  4. Julian Lennon Is Global Ambassador for the Lupus Foundation of America | NIH MedlinePlus the Magazine

    MedlinePlus

    ... classic Beatles song, "Lucy in the Sky with Diamonds." As Global Ambassador, Lennon supports public awareness initiatives ... classic Beatles song, "Lucy in the Sky with Diamonds." Lennon has been a long-time supporter of ...

  5. Using CYGNSS to Observe Convectively Driven Near-Surface Winds in Tropical Precipitation Systems During Madden-Julian Oscillation Events

    NASA Technical Reports Server (NTRS)

    Lang, Timothy J.; Li, Xuanli; Mecikalski, John; Hoover, Kacie; Castillo, Tyler; Chronis, Themis

    2017-01-01

    The Cyclone Global Navigation OKLMA 1411 UTC Satellite System (CYGNSS) is a multi-satellite constellation that launched 15 December 2016. The primary objective of CYGNSS is to use bistatic Global Positioning System (GPS) reflectometry to accurately measure near-surface wind speeds within the heavily raining inner core of tropical cyclones. CYGNSS also features rapid revisit times over a given region in the tropics - ranging from several minutes to a few hours, depending on the constellation geometry at that time. Despite the focus on tropical cyclones, the ability of CYGNSS to provide rapid updates of winds, unbiased by the presence of precipitation, has many other potential applications related to general tropical convection.

  6. The Influence of Madden Julian Oscillation on the Formation of the Hot Event in the Western Equatorial Pacific

    NASA Astrophysics Data System (ADS)

    Wirasatriya, Anindya; Nugroho Sugianto, Denny; Helmi, Muhammad

    2017-02-01

    Hot event (HE) is the high SST phenomena higher than about 30°C, occur in an area of more than 2×106 km2 and last for a period more than 6 days. HE develops only under the condition of high solar radiation and low wind speed. The indication of the relation between HE and MJO has been described in the previous study for one HE case. In the present study, the more case of MJO-HE relation is collected for the period of 2003-2011 and the possible mechanisms is examined. New Generation Sea Surface Temperature for Open Ocean (NGSST-O-Global-V2.0a) was used to identify HEs. Precipitation from TRMM were bandpass filtered with cut off period of 30-60 days for MJO identification. Observation data from TAO/TRITON buoy were used for investigating the possible mechanism of MJO-HE relation. Off 48 HE cases located along the equatorial band, the development of 29 HE cases was related to the suppressed phase of MJO whereas the high solar radiation occurred. High precipitation during the active phase of MJO may contribute to stabilize the upper mixed layer. The stable upper water column fasten the heating process during the suppressed phase of MJO, generating HE.

  7. Simulated effects of projected pumping on the availability of freshwater in the Evangeline Aquifer in an area southwest of Corpus Christi, Texas

    USGS Publications Warehouse

    Groschen, George E.

    1985-01-01

    Two simulations of the projected pumping a low estimate, as much as 46.2 cubic feet per second during 2011-20; and a high estimate, as much as 60.0 cubic feet per second during the same period indicate that no further regional water-quality deterioration is likely to occur. Many important properties and conditions are estimated from poor or insufficient field data, and possible ranges of these properties and conditions are tested. In spite of the errors and data deficiencies, the results are based on the best estimates currently available. The reliability of the conclusions rests on the adequacy of the data and the demonstrated sensitivity of the model results to errors in estimates of these properties.

  8. Changes Are Needed to the Army Contract with Sikorsky to Use Existing DoD Inventory and Control Costs at the Corpus Christi Army Depot

    DTIC Science & Technology

    2011-11-03

    levels, monthly consumption data, and DLA standard unit prices for all DLA consumables . Enterprise Business System EBS is DLA’s primary...the business case analysis for BRAC CIT, consumable items that were part of a contractor logistics support contract, such as the CCAD/Sikorsky...Army Depot CIT Consumable Item Transfer DLA Defense Logistics Agency DOF Depot Overhaul Factor EBS

  9. Step 1: Learn About Diabetes | NIH MedlinePlus the Magazine

    MedlinePlus

    ... type 2 diabetes in 2013. Photo By: Frazer Harrison In 1995, singer Patti LaBelle collapsed on stage ... with healthy foods and exercise. Photo By: Frazer Harrison When Alec Baldwin was diagnosed with prediabetes, he ...

  10. Evolution and Intensification of Cyclone Pam (2015) from Active Convective Populations within a Madden-Julian Oscillation Event in March 2015

    NASA Astrophysics Data System (ADS)

    Takemi, T.

    2015-12-01

    Cyclone Pam (2015) that developed in the southern tropical Pacific in March 2015 caused severe damages over the islands states in the southern Pacific. According to JTWC warning, Cyclone Pam was a category-5 storm and its maximum wind speed reached about 75 m/s. Because the islands of Vanuatu were severely damaged by the cyclone, the quantitative assessment of hazards induced by the cyclone is important in order to mitigate and prevent resulting disasters. In addition, this cyclone is of meteorological interest, because the cyclone developed and evolved from active convection of an MJO signal. This study numerically investigates the evolution and intensification of Cyclone Pam from the transformation of convective populations into a vortical structure with the use of a regional meteorological model, the WRF model. By examining the impacts of the size of the computational domain, the grid spacing, and the cumulus parameterization scheme employed to the simulated cyclone, we have found that the most intense cyclone with the most rapid intensification is reproduced with doubly nested domains at 6- and 2-km horizontal resolutions and without a cumulus parameterization; the simulated cyclone achieved the minimum central pressure of about 890 hPa. Transition processes from convective populations of MJO into a tropical cyclone are investigated. It was found that at the pre-storm stage when no cyclonic storm developed there was a very weak low within active convective areas of the MJO when they pass over the equatorial Pacific. The low generates weak cyclonic convergence off the equator. From the sensitivity experiments, there is a clear difference in the environmental moisture field among the experiments. This result suggests that the MJO provided a sufficient amount of moisture, which positively contribute to the intensification of the tropical cyclone.

  11. Variations in Vietnamese marriages, births and infant deaths by months of the Julian calendar and years of the Vietnamese and Chinese astrological calendars.

    PubMed

    Nguyen, M T; Swenson, I

    1996-07-01

    The timing of births and marriages in Vietnam appears to have some statistically significant relationships with the signs of the Chinese and Vietnamese astrological calendars. Years considered to be good years have significantly more births and marriages than years that are not considered as desirable. Births and marriages also have some significant variations with seasons of the year. Infant deaths do not appear to have any significant relationships with the astrological signs although infant mortality has some significant relationships with seasons of the year. The findings indicate that there is some purposeful planning for marriages and births to coincide with optimal times defined in the astrological calendars.

  12. Book Review: The end of time: the next revolution in our understanding of the universe. Julian Barbour, Weidenfeld and Nicholson, London, 384 pp., 16.95, ISBN 0195145925

    NASA Astrophysics Data System (ADS)

    Ellis, G. F. R.

    In the early part of this century, physicists, led notably by Albert Einstein and the pioneers of quantum theory-in particular Neils Bohr, Werner Heisenberg, and Paul Dirac-discovered that the underlying nature of physical reality is stranger than anyone had ever imagined. A series of brilliant insights led to the realisation, on the one hand, of the relative nature of space and time measurements, and hence of our basic concepts of space and time (ultimately leading to the discovery of nuclear energy), and on the other hand, of the quantum nature of matter, with its associated quantum statistics and uncertainty of prediction (leading to transistors and lasers). Combining these views ultimately led to a realisation of the necessity of the existence of anti-matter, and of the dynamic nature of the vacuum. Further developments led to an understanding of the existence of symmetries characterising the various families of elementary particles, and of the unified nature of the fundamental interactions when described as gauge theories with forces mediated by exchange of gauge bosons. These properties have all been confirmed by carefully controlled experiments.

  13. Analysis of Low Level Winds Measured by a Ship-Mounted, High Resolution Doppler Lidar during the Dynamics of the Madden Julian Oscillation (DYANMO) Experiment

    DTIC Science & Technology

    2012-09-30

    Scanning, Doppler Lidar, Operated from the RV Revelle During DYNAMO. Wm. Alan Brewer, R. J. Alvarez II, A. Weickmann, S. Sandberg, and M. Hardesty AMS...Alvarez II, A. Weickmann, S. Sandberg, and M. Hardesty 16th International Symposium for the Advancement of Boundary-Layer Remote Sensing 5-8 June 2012

  14. The Origin of the Common Yearly Counting in the Julian and Gregorian Calendar with Special Attention to the Ancient Astronomy and World View

    NASA Astrophysics Data System (ADS)

    Rothwangl, Sepp

    Because of a new consideration and recently revealed new facts and documents it is maintained that Dionysius Exiguus fixed the common Christian yearly count with the aim to mark the begin and end of the age of Pisces. By incorporating of three factors, he precalculated the conjunction of all naked eye planets including Sun and Moon of May 2000. He figured it out with the help of so called eternal planet boards and a ``plotting year calculation'' (Zieljahrberechnung). Then he determined the year 1 A. D. exactly 1999 years before it, due the medieval assumed constant of precession, (66 2/3 years each degree), that was base of calculation of later Arabian and Persian astronomers. Thus he linked the ``Platonic Year'' with the ``Greatest Year''. He did this in order to fulfil the Christian belief of the return of the Lord during a planetary position which is equivalent to the Greek Symposium or the start of the Kali Yuga, calculated by the Indian astronomer Aryabhata. For both calculations actually the alignment of all planets of year 531 CE was the base. In his late antique religious and astronomical world view Dionysius determined the yearly counting such a way, that the year 2000 (2nd millennium) of his count should mark the end of the age of Pisces (ICHTHYS) and the religiously prophesied Christian end time.

  15. Do Native American Culture, Life Experiences, Physics and the Bible Provide Supportive Evidence For Julian Barbour's Thesis About Anachronisms Relating to The End of Time?

    NASA Astrophysics Data System (ADS)

    Mears, Paul C.; Mc Leod, Roger D.

    2002-10-01

    Historic, and current Native American attitude considers that time can be considered in a cyclic sense that contrasts against a majority view of physicists that time varies in a linear algebraic sense. Precognition experiences offer evidence that time has a more subtle substance. The Bible clearly delineates "prophetic awareness of the future." Embedded "Bible codes" are touted as mathematical evidence for the existence of God. His existence is better served if "past-tense" information of events can propagate backward relative to our "present-tense" time. Barbour, p39: [some] " physicists entertain the idea time truly does not exist applies to motion .suggestion; it too is pure illusion." The concept of prophecy has been interpreted as evidence or "proof" of the existence of "Manitou" or God. Our interpretation is that, according to Native American legends, or the Bible, for as yet unspecified reasons, time behaves as though it can convey information in a backward, or forward, sense. It is like an f (t ± ti).

  16. The Kelvin Wave and the Madden-Julian Oscillation in Aqua-plant Simulations by the Naval Research Laboratory Spectral Element Atmospheric Model (NSEAM)

    DTIC Science & Technology

    2007-12-05

    3 305 455 605 605 755 75S 90S 0 .30E 60E 90E 120E 150E 180 150W 120W 90W 60W .30W LONGITUDE (Deg) NSEAM Mox :3000. Min:27 30. Ave:2821...E6rP8L30e --------------0 1 0 20 30 40 50 60 70 70 80 TIME (Doy) 80 90 70 80 TIME (Doy) 90 100 110 120 Mox :229, Min:O, Ave:33 ----------110 120...130 140 150 90 100 110 120 Mox :252, Min:O, Ave:44 ----------100 110 120 130 140 150 Figure 3 (cont.) ~ 0’ Ql 0 ....... w 0 :::> 1- (3 z 0

  17. The Kelvin Wave and the Madden-Julian Oscillation in Aqua-Plant Simulations by the Naval Research Laboratory Spectral Element Atmospheric Model (NSEAM)

    DTIC Science & Technology

    2007-12-05

    3 305 455 605 605 755 75S 90S 0 .30E 60E 90E 120E 150E 180 150W 120W 90W 60W .30W LONGITUDE (Deg) NSEAM Mox :3000. Min:27 30. Ave:2821...E6rP8L30e --------------0 1 0 20 30 40 50 60 70 70 80 TIME (Doy) 80 90 70 80 TIME (Doy) 90 100 110 120 Mox :229, Min:O, Ave:33 ----------110 120...130 140 150 90 100 110 120 Mox :252, Min:O, Ave:44 ----------100 110 120 130 140 150 Figure 3 (cont.) ~ 0’ Ql 0 ....... w 0 :::> 1- (3 z 0

  18. Selective Nonoperative Management of Penetrating Torso Injury From Combat Fragmentation Wounds

    DTIC Science & Technology

    2008-02-01

    Selective Nonoperative Management of Penetrating Torso Injury From Combat Fragmentation Wounds Alec C . Beekley, MD, Lorne H. Blackbourne, MD, James A...College of Surgeons Committee on Trauma Resident Trauma Paper Competition. Address for reprints: Alec C . Beekley, MD, FACS, Department of General...REPORT unclassified b. ABSTRACT unclassified c . THIS PAGE unclassified Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std Z39-18

  19. Physiological Monitoring in Diving Mammals

    DTIC Science & Technology

    2012-09-30

    Fahlman Department of Life Sciences Texas A&M- Corpus Christi 6300 Ocean Dr Unit 5892 Corpus Christi, TX 78412 phone: (361) 825-3489 fax: (361...825-2025 email: andreas.fahlman@tamucc.edu Peter L. Tyack School of Biology, Sea Mammal Research Unit Scottish Oceans Institute University...Sciences Texas A&M- Corpus Christi 6300 Ocean Dr Unit 5892 Corpus Christi, TX 78412 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING

  20. Army Industrial Operations: Budgeting and Management of Carryover Could Be Improved

    DTIC Science & Technology

    2013-06-01

    1The 13 Industrial Operations’ activities are the Anniston Army...Depot, Anniston , Alabama; the Blue Grass Army Depot, Richmond, Kentucky; the Corpus Christi Army Depot, Corpus Christi, Texas; the Crane Army...maintenance depots ( Anniston , Alabama; Corpus Christi, Texas; Background Page 4 GAO-13-499 Army Industrial Operations Letterkenny, Pennsylvania

  1. 75 FR 10300 - South Texas Area Maritime Security (STAMS) Committee; Vacancies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-05

    ... Security (STAMS) Committee to submit their application for membership to the Captain of the Port, Corpus Christi, Texas. DATES: Requests for membership should reach the Corpus Christi Captain of the Port on or... at the following address: Commander, USCG Sector Corpus Christi, 8930 Ocean Drive, Hangar 41,...

  2. Computer Center CDC Libraries/NSRDC (Subprograms).

    DTIC Science & Technology

    1981-02-01

    IGD ) DESCRIPTION OF PARAMETERS JG - DIRECTION OF CONVERSION 1 - GREGORIAN TO RELATIVE JULIAN 2 - RELATIVE JULIAN TO GREGORIAN JD - RELATIVE JULIAN...DATE (OUT IF JG=I, IN IF JG:2) IGY - GREGORIAN YEAR (EG, 1975) (IN IF JG=l, OUT IF JG=2) 1GM - GREGORIAN MONTH (1-12) (IN IF JG=l, OUT IF JG=2) IGD ...YEAR COMPUTATIONS. USAGE CALL JULIAN (JG, JD, IGY, IGM, IGD ) DESCRIPTION OF PARAMETERS G - DIRECTION OF CONVERSION 1 - GREGORIAN TO JULIAN 2 - JULIAN

  3. 3. Historic American Buildings Survey L. D. Andrew, Photographer Dec. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. Historic American Buildings Survey L. D. Andrew, Photographer Dec. 30, 1936 VIEW FROM CORNER OF WHITAKER AND ST JULIAN SHOWING NORTH FACADE - Gibbons Block, Congress, Saint Julian, Barnard, Whitaker Streets, Savannah, Chatham County, GA

  4. Students in Austin, Texas Learn About Space Exploration and Science

    NASA Video Gallery

    From NASA's International Space Station Mission Control Center, Christie Sauers, Orion Cockpit Working Group Deputy, participates in a Digital Learning Network (DLN) event with students at the Ann ...

  5. Evaluation of Internal Structure, Volume and Mass of Glacial Bodies by Integrated LiDAR and Ground Penetrating Radar Surveys: The Case Study of Canin Eastern Glacieret (Julian Alps, Italy)

    NASA Astrophysics Data System (ADS)

    Colucci, R. R.; Forte, E.; Boccali, C.; Dossi, M.; Lanza, L.; Pipan, M.; Guglielmin, M.

    2015-03-01

    We propose an integrated methodology to image the internal structure, evaluate the volume and estimate the densities of different units within ice bodies, useful for more precise mass estimation of very small glaciers. The procedure encompasses light detection and ranging (LiDAR) and ground penetrating radar (GPR) common offset data. The case study is the Canin Eastern Glacieret (CEG), a very small and maritime glacier in the Eastern Alps, and one of the lowermost glaciers of the European Alps. We calculate both volumetric and mass variations of the analysed ice body by integrating GPR measurements with LiDAR surveys acquired in different years (2006 and 2011). Between 2006 and 2011, the area of the glacieret increased from 8,510 to 17,530 m2 with a gain of 9,016 m2. The observed volume increase has been estimated in 96,350 m3 (+97 %), which corresponds to a positive mass balance of 3.89 m w.e.. This quite unusual finding in the present global warming behaviour is mainly due to the above-average winter accumulation (cw) in the considered period. Moreover, the winter season 2008-2009 represented an exceptional event with a cw equal to 13.38 m, the highest of the available record. Thanks to density estimation, we infer the total mass of the CEG at the time of the geophysical surveys, comparing such results with the ones obtained with available empirical equations, observing an important mass gain in the 5 years considered.

  6. What Works for Me.

    ERIC Educational Resources Information Center

    Vishwanadha, Hari; And Others

    1990-01-01

    Provides suggestions on various English instruction topics. Includes (1) "Argumentation Exercise," Hari Vishwanadha; (2) "How to Survive Developmental (or Any Other) English," Sally Russell; (3) "Reach Out to an Expert," Norma A. Register; (4) "Summary and Response Writing," Alec Valentine; (5) "The Living Journal," Blair Spencer Ray; and (6)…

  7. Policy Shop Casts Long K-12 Shadow

    ERIC Educational Resources Information Center

    Ujifusa, Andrew

    2012-01-01

    In nearly 40 years of legislative advocacy, the American Legislative Exchange Council (ALEC)--a free-market, limited-government group now drawing intense scrutiny for its support of a controversial self-defense law--has had a significant influence on K-12 education through its model legislation and work with state lawmakers to promote such…

  8. Privatizing Schooling and Policy Making: The American Legislative Exchange Council and New Political and Discursive Strategies of Education Governance

    ERIC Educational Resources Information Center

    Anderson, Gary L.; Donchik, Liliana Montoro

    2016-01-01

    In this article, we examine the American Legislative Exchange Council (ALEC) as an example of a unique node within larger policy networks composed of new policy entrepreneurs (e.g., venture philanthropists, think tanks, private "edubusinesses" and their lobbyists, advocacy organizations, and social entrepreneurs). These new policy…

  9. XPLANE: Real-Time Awareness of Tactical Networks

    DTIC Science & Technology

    2012-09-01

    Conference, pages 1–6. IEEE, 2010. [3] Nate Foster, Rob Harrison, Michael J. Freedman, Christopher Monsanto , Jennifer Rexford, Alec Story, and David...architecture for user-level packet capture. In Proceedings USENIX Winter 1993 Conference. ACM, 1993. [10] Christopher Monsanto , Nate Foster, Rob

  10. Proceedings of the Annual International Conference of the Association for the Education of Teachers in Science (Charlotte, North Carolina, January 10-13, 2002).

    ERIC Educational Resources Information Center

    Rubba, Peter A., Ed.; Rye, James A., Ed.; DiBiase, Warren J., Ed.; Crawford, Barbara A., Ed.

    This document contains the proceedings of the 2002 Annual International Conference of the Association for the Education of Teachers in Science which was held in Charlotte, North Carolina, January 10-13, 2002. Papers include: (1) "Teaching Science Methods Courses with Web-Enhanced Activities" (Alec M. Bodzin); (2) "How Is Your Lawnmower Working?…

  11. Measurement of Minority Charge Carrier Diffusion Length in Gallium Nitride Nanowires Using Electron Beam Induced Current (EBIC)

    DTIC Science & Technology

    2009-12-01

    physicist Dr Richard Feynman at an American Physical Society meeting at the California Institute of Technology in 1959 [2]. The development of...Journal of Physical Chemistry Letters, Vol 112, 2008, 11093–11097. [24] A.Alec Talin, George T. Wang, Elain Lai and Richard J. Anderson

  12. Advertising Change: The Distribution of New Jobs in Australian Universities

    ERIC Educational Resources Information Center

    McHoul, Alec

    2005-01-01

    Everybody has a view about what's happening to university hiring policies--and it's often a bleak one. But it's generally hard to tie down the facts. Alec McHoul surveyed all the new job advertisements for the second half of 2004. As you might expect, change is in the air. (Contains 2 charts and 6 endnotes.)

  13. Multicultural Literature: Broadening Young Children's Experiences.

    ERIC Educational Resources Information Center

    Salas, Rachel G.; Lucido, Frank; Canales, JoAnn

    This chapter is part of a book that recounts the year's work at the Early Childhood Development Center (ECDC) at Texas A & M University-Corpus Christi. Rather than an "elitist" laboratory school for the children of university faculty, the dual-language ECDC is a collaboration between the Corpus Christi Independent School District and…

  14. University/Public School Partnership Provides a Jump Start for Three-Year-Olds.

    ERIC Educational Resources Information Center

    Canales, JoAnn; Duron, Susan

    This chapter is part of a book that recounts the year's work at the Early Childhood Development Center (ECDC) at Texas A & M University-Corpus Christi. Rather than an "elitist" laboratory school for the children of university faculty, the ECDC is a collaboration between the Corpus Christi Independent School District and the…

  15. Developing Partnerships for Adult Literacy Training: College/Community Cooperation.

    ERIC Educational Resources Information Center

    Flores, Agnes L.; And Others

    The Corpus Christi Literacy Council (CCLC) is an independent, non-profit educational organization operating through joint partnership and grant activities with Del Mar College (DMC) and community and government organizations in the Corpus Christi (Texas) area. The major purposes of the council are to establish comprehensive reading programs for…

  16. A School Healthcare Program for Low Income Families of Very Young Children.

    ERIC Educational Resources Information Center

    Joyce, Esperanza Villanueva

    This chapter is part of a book that recounts the year's work at the Early Childhood Development Center (ECDC) at Texas A & M University-Corpus Christi. Rather than an "elitist" laboratory school for the children of university faculty, the dual-language ECDC is a collaboration between the Corpus Christi Independent School District and…

  17. A Bibliometric Analysis of the Academic Influences of and on Evaluation Theorists' Published Works

    ERIC Educational Resources Information Center

    Heberger, Anne E.; Christie, Christina A.; Alkin, Marvin C.

    2010-01-01

    As is the case with other fields, there is motivation for studying the impact that the body of evaluation theory literature has within and outside the field. The authors used journal articles written by theorists included on the evaluation theory tree by Alkin and Christie (2004; Christie & Alkin, 2008) and published in the Web of Science, an…

  18. Using Software Development Tools and Practices in Acquisition

    DTIC Science & Technology

    2013-12-01

    Campbell Mike Philips John Foreman Ted Marz Bob Ferguson Pat Place John Robert Fred Schenker Robert Seacord Jeff Thieret David Zubrow Lorraine...display/seccode/CERT+Secure+Coding+Standards (2011). [Christie 1996] Christie, Alan M., Levine, Linda, Morris , Edwin J., Zubrow, David, Belton

  19. 76 FR 55082 - Re-Accreditation and Re-Approval Intertek Testing Services as a Commercial Gauger and Laboratory

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-06

    ... SECURITY Bureau of Customs and Border Protection Re-Accreditation and Re-Approval Intertek Testing Services... Homeland Security. ACTION: Notice of re-approval of Intertek Testing Services, Corpus Christi, Texas, as a..., Intertek Testing Services/Caleb Brett, Corpus Christi, Texas 78406, has been re-approved to gauge...

  20. A New Therapeutic Paradigm for Breast Cancer Exploiting Low Dose Estrogen-Induced Apoptosis

    DTIC Science & Technology

    2013-06-01

    the Christie Hospital and Holt Radium Institute in 53 Manchester [16]. He had a long interest in cancer research [23] but also wanted to 54 determine...417of clinical trial by the Christie Hospital and Holt Radium Institute. Br Med J (Clin Res Ed) 418286:827–830 41922. Rose C, Thorpe SM, Andersen KW et

  1. 77 FR 58368 - Notice of Application

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Application Corpus Christi Liquefaction, LLC Docket No. CP12-507..., 2012, Corpus Christi Liquefaction, LLC (CCL), located at 700 Milam Street, Suite 800, Houston,...

  2. Nature Study: A Science Curriculum for Three and Four-Year-Olds.

    ERIC Educational Resources Information Center

    McDonald, JoAnn Montes; McDonald, Robert B.

    This chapter is a part of a book that recounts the year's work at the Early Childhood Development Center (ECDC) at Texas A & M University-Corpus Christi. Rather than an "elitist" laboratory school for the children of university faculty, the dual-language ECDC is a collaboration between the Corpus Christi Independent School District…

  3. The Possibilities of Longitudinal Research: Lessons from a Teacher and a Researcher

    ERIC Educational Resources Information Center

    Compton-Lilly, Catherine

    2016-01-01

    In this article, the author first presents an analysis based on field notes from when she was a first-grade teacher, with particular focus on one student, Christy. She then offers a longitudinal account of Christy from the author's current position as a university researcher. She argues that these two analyses reveal the power of longitudinal…

  4. Early Childhood Literacy: Programs & Strategies To Develop Cultural, Linguistic, Scientific and Healthcare Literacy for Very Young Children & their Families, 2001 Yearbook.

    ERIC Educational Resources Information Center

    Cassidy, Jack, Ed.; Garrett, Sherrye D., Ed.

    This yearbook recounts the work in 2001 at the Early Childhood Development Center (ECDC) at Texas A & M University-Corpus Christi. Rather than an "elitist" laboratory school for the children of university faculty, the ECDC is a collaboration between the Corpus Christi Independent School District and the university, with an enrollment…

  5. Aircraft Accident Investigation at ARL: The First 50 Years

    DTIC Science & Technology

    1993-03-01

    it is significant. Hercule Poirot - The Murder on the Links ( Agatha Christie , 1923) -92- Arrange your facts. Arrange your ideas. And if some little...The Murder on the Links ( Agatha Christie , 1923) -93- APPENDIX 1 CHRONOLOGICAL LIST OF ARL PUBLICATIONS ON AIRCRAFT ACCIDENT INVESTIGATION 1. T.F.C

  6. Engineers on the Twin Rivers: A History of the Nashville District Corps of Engineers United States Army

    DTIC Science & Technology

    1978-01-01

    River canalization project was directed by some exceptionally capable District Engineers-officers like Edgar Jadwin, Julian Schley, and Lytle Brown...Major Fiske and the officers who suc- ceeded him as District Engineer- General Julian Schley and Colonel Lewis H. Watkins among them-were enthused...52 Another early local flood protection General Julian F. Schley breaks ground for Wolf Creek Dam , September 1, 1941. To his right are Colonel O

  7. Upper Ocean Characteristics in the Tropical Indian Ocean from AXBT and AXCTD Measurements

    DTIC Science & Technology

    2012-03-01

    Madden– Julian oscillation. Mon. Wea. Rev., 129, 2970–2982. Han, W., J. P. McCreary , Jr., D. Anderson, and A. J. Mariano, 1999: Dynamics of the...understanding the coupling processes that take place in air-sea interaction during the active and suppressed phases of Madden- Julian Oscillation, and... Julian Oscillation (DYNAMO) research project. The aircraft-based measurements extended from 01 November to 13 December 2011, when 12 research

  8. Topics in High Energy Astrophysics Based on Lecture by Peter Goldreich at the RAND Corporation during June-July 1969,

    DTIC Science & Technology

    with Lambda = 0; Existence of horizons in cosmology; Universal blackbody radiation; Nucleosynthesis in the first 1001 seconds; Galaxy formation and Pulsar electrodynamics: The Goldreich-Julian model. (Author)

  9. Requirements Engineering and Analysis Workshop Proceedings Held in Pittsburgh, Pennsylvania on 12-14 March 1991

    DTIC Science & Technology

    1991-12-01

    requirements document of an existing avionics system, the Operational Flight Program (OFP) for the A-7E aircraft [ileninger78]. Example 2 has several features...Cratsley, III Naval Sea Combat Systems William S. Gilmore Software Engineering Institute Alec Grindlay Navy Software Technology for Adaptable, Reliable Sys...changes cannot be predicted a prior), improving the quality of the initial requirements will re- duce the need to change the requirements due to their

  10. Defeated by a MAZE: The Soviet Economy and Its Defense-Industrial Sector

    DTIC Science & Technology

    1988-10-01

    Note, principles drawn from the history of economic thought are related to some of the key features of Russian and Soviet history to define and...adequately reflected. In this Note, principles drawn from the history of economic thought are related to some of the key features of Russian and...Alec, " History , Political Culture , and Economics in the Soviet Union," Economics and Politics in the USSR: Problems of Interdependence, Hans-Hermann

  11. Mode Transitions in Hall Effect Thrusters

    DTIC Science & Technology

    2013-07-01

    Astronautics Mode Transitions in Hall Effect Thrusters Michael J. Sekerak 1 , Benjamin W. Longmier 2 and Alec D. Gallimore 3 University of Michigan...nude Faraday probe, retarding potential analyzer and cylindrical Langmuir prove, Brown showed the transition from “low-current” to “high-current...thank two former PEPL students: Dr. Robert Lobbia for development of the HDLP; and Dr. Michael McDonald for development of the FastCam Analysis

  12. Field Assessment of Yeast- and Oxalic Acid-generated Carbon Dioxide for Mosquito Surveillance

    DTIC Science & Technology

    2014-12-01

    FIELD ASSESSMENT OF YEAST- AND OXALIC ACID –GENERATED CARBON DIOXIDE FOR MOSQUITO SURVEILLANCE1 JAMES F. HARWOOD, ALEC G. RICHARDSON, JENNIFER A...were evaluated in order to address this capability gap: 1) an electrolyzer that converts solid oxalic acid into CO2 gas, and 2) CO2 produced by yeast...surveillance was compared to dry ice and compressed gas in Jacksonville, FL. The electrolyzed oxalic acid only slightly increased the number of

  13. In-line Microwave Warmer for Blood and Intravenous Fluids.

    DTIC Science & Technology

    1989-12-14

    coronary blood flow[7-1 01. • Reduction in tissue oxygenation. As body temperature drops , the affinity of oxygen for the hemoglobin molecule increases...8217ow -ate . -veioo scotware ’or Agcrithrn;2 oil 13M PC (5; Develcp ’Microprccessor Circuitry for Fest. Stand-Alone Feedback Control -?evelco alec:rcnic...the output power decreases to permit the outlet temperature to slightly decrease. Once the temperature has dropped just below the target temperature

  14. Enumeration of Mars years and seasons since the beginning of telescopic exploration

    USGS Publications Warehouse

    Piqueux, Sylvain; Byrne, Shane; Titus, Timothy N.; Hansen, Candice J.; Kieffer, Hugh H.

    2015-01-01

    A clarification for the enumeration of Mars Years prior to 1955 is presented, along with a table providing the Julian dates associated with Ls = 0° for Mars Years -183 (beginning of the telescopic study of Mars) to 100. A practical algorithm for computing Ls as a function of the Julian Date is provided. No new science results are presented

  15. Investigations of Possible Low-Level Temperature and Moisture Anomalies During the AMIE Field Campaign on Manus Island

    SciTech Connect

    Long, CN; Holdridge, DJ

    2012-11-19

    This document discusses results stemming from the investigation of near-surface temperature and moisture “oddities” that were brought to light as part of the Atmospheric Radiation Measurement (ARM) Madden-Julian Oscillation (MJO) Investigation Experiment (AMIE), Dynamics of the Madden-Julian Oscillation (DYNAMO), and Cooperative Indian Ocean experiment on intraseasonal variability in the Year 2011 (CINDY2011) campaigns.

  16. Scaliger, Joseph (1540-1609)

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    French mathematician who, in 1582, founded the system of the Julian day, a continuous reckoning of time which starts at midday GMT on 1 January 4713 BC. The system has the advantage that it is able to set aside issues of leap years, the different lengths of months, `lost' days at changes of calendars etc. The label `Julian' commemorates Scaliger's father Julius....

  17. 75 FR 66344 - Amendment of Jet Route J-93; CA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-28

    ... Tactical Air Navigation Aid (VORTAC), and the ASUTA intersection on the United States/Mexican border. The.../Mexican Border and the Julian, CA, 107 (M)/122 (T) radial via Julian; Paradise, CA; INT Paradise 290 and... notified by the Mexican Government that the Penasco VOR in Mexico had been relocated. This proposed...

  18. 77 FR 29361 - Scientific Integrity: Statement of Policy

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-17

    ... Secretary for Regulatory Policy, U.S. Department of Labor, 200 Constitution Avenue NW., Room S-2312... portal specifically designed to capture your input and suggestions, http://dolscientificintegrity...://dolscientificintegrity.ideascale.com/ . E. Christi Cunningham, Associate Assistant Secretary for Regulatory...

  19. Report to the U.S. Congress on the National Oceanographic Partnership Program

    DTIC Science & Technology

    2006-03-01

    Texas A&M University at Corpus Christi University College Dublin University of Georgia University of Vienna Max Planck...Institute Woods Hole Oceanographic Institution Monterey Bay Aquarium Research Institute Smithsonian Institution Station

  20. Using The "Little Grey Cells."

    ERIC Educational Resources Information Center

    Hardesty, Susan M.

    1983-01-01

    Finds that Agatha Christie's mysteries can be used to encourage discussion of characterization and human values, to promote reading and literary analysis skills, and to develop both writing and problem-solving skills. Suggests several language arts activities. (MM)

  1. 8. Historic American Buildings Survey, Arthur W. Stewart, Photographer June ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. Historic American Buildings Survey, Arthur W. Stewart, Photographer June 26, 1936 GENERAL VIEW AFTER 1919 STORM (SOUTHWEST ELEVATION). - Conrad Meuly House & Store, 210 Chaparral Street, Corpus Christi, Nueces County, TX

  2. 7. Historic American Buildings Survey, Arthur W. Stewart, Photographer June ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. Historic American Buildings Survey, Arthur W. Stewart, Photographer June 26, 1936 GENERAL VIEW PRIOR TO 1919 STORM (EAST ELEVATION). - Conrad Meuly House & Store, 210 Chaparral Street, Corpus Christi, Nueces County, TX

  3. DEHP (DI-N-ETHYLHEXYL PHTHALATE), WHEN ADMINISTERED DURING SEXUAL DIFFERENTIATION, INDUCES DOSE DEPENDENT DECREASES IN FETAL TESTIS GENE EXPRESSION AND STEROID HORMONE SYNTHESIS

    EPA Science Inventory

    DEHP (di-n-ethylhexyl phthalate), when administered during sexual differentiation, induces dose dependent decreases in fetal testis gene expression and steroid hormone synthesis.
    Vickie S. Wilson, Christy Lambright, Johnathan Furr, Kathy Bobseine, Carmen Wood, Gary Held, and ...

  4. 76 FR 50182 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-12

    ... among personnel from Texas Tech University, Texas A&M--Corpus Christi, and a commercial fishing... many as 30 vessel owners associated with that organization. Observers from Texas Tech University...

  5. Interoperable Open-Source Sensor-Net Frameworks with Sensor-Package Workbench Capabilities: Motivation, Survey of Resources, and Exploratory Results

    DTIC Science & Technology

    2010-06-01

    Email: Jayson.Durham@navy.mil Mehrube Mehrubeoglu Texas A&M University–Corpus Christi, Department of Computing Sciences, Mechanical Engineering , and... Engineering Technology Corpus Christi, TX USA Email: Ruby.Mehrubeoglu@tamucc.edu Lifford McLauchlan Texas A&M University-Kingsville Electrical Engineering ...Resources, and Exploratory Results 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f

  6. Time Delay Measurements of Key Generation Process on Smart Cards

    DTIC Science & Technology

    2015-03-01

    MEASUREMENTS OF KEY GENERATION PROCESS ON SMART CARDS by Christy A. Seawell March 2015 Thesis Advisor Alex Bordetsky Second Reader: Jonathan Shu...Master’s Thesis 4. TITLE AND SUBTITLE 5. FUNDING NUMBERS TIIVIE DELAY MEASUREMENTS OF KEY GENERATION PROCESS ON SMART CARDS 6. AUTHOR(S) Christy A...ensure security increases. This is a potential problem for the Department of Defense, which requires smart card usage for its employees. This paper

  7. Computer Crime: A Peopleware Problem. Proceedings of a Conference Held in Monterey, California on October 25 - 26, 1993

    DTIC Science & Technology

    1993-10-26

    Educators ........ 83 Lynn F. Fischer Understanding the Computer Criminal ........................................ 95 Neil S. Hibler & Jim Christy Notes...such as substance abuse, absenteeism, suicide, sabotage, and espionage. The paper prepared jointly by Col Hibler and his associate, Jim Christy...copies were "goods" within the meaning of the § 2314. The court conclud,3d that copies were within the definition of "goods. "The Botone court reasoned

  8. Lightweight Portable Plasma Medical Device - Plasma Engineering Research Laboratory

    DTIC Science & Technology

    2014-10-01

    poultry , eggs, tomato and papaya using non-thermal plasma. (Corpus Christi, TX: Sigma Xi 12th Annual Undergraduate Research Symposium, 2013). 100...Guadalupe Vidal, Kim Pham, Magesh Thiyagarajan. Effective deactivation of Bacillus cereus and Salmonella Typhimurium in chicken poultry , eggs, tomato and...Typhimurium in chicken poultry , eggs, tomato and papaya using non-thermal plasma. (Corpus Christi, TX: Sigma Xi 12th Annual Undergraduate Research

  9. DoD Depot-Level Reparable Supply Chain Management: Process Effectiveness and Opportunities for Improvement

    DTIC Science & Technology

    2014-01-01

    Logistics Complex AMC Army Materiel Command AMCOM Aviation and Missile Life Cycle Management Command ANAD Anniston Army Depot AOIB Army Organic...Complex (ALC) (supply and maintenance), Oklahoma City ALC (supply and maintenance), Warner Robins ALC (supply), Anniston Army Depot, Corpus Christi...NIINs NOTE: CCAD = Corpus Christi Army Depot, TYAD = Tobyhanna Army Depot, LEAD = Letterkenny Army Depot, ANAD = Anniston Army Depot. RAND RR398-4.1 C

  10. Coastal Inlets of Texas, USA

    DTIC Science & Technology

    2007-01-01

    Caney Creek Freeport Ship Channel San Luis Pass Galveston Pass Rollover Fish Pass Sabine Pass Texas Victoria Houston Port Arthur Corpus Christi...1960) provide design guidance for constructing fish passes along the Texas coast, it appears that an update based on more recent experiences and...Hall Pier at Corpus Christi; and bay gauges (Rawlings at Mouth of Colorado River; Lavaca, and Port Isabel in the lower Laguna Madre ) for year 1999

  11. [Speech by Oscar Julian Bardeci, director of the Centro Latinoamericano de Demografia (CELADE), at the Latinamerican Regional Meeting prior to the International Conference on Population in recognition of the Second Meeting on Population by the Committee of Upper-Level Government Experts (CEGAN), Havana, Cuba, November 16-19, 1983].

    PubMed

    Bardeci, O J

    1983-12-01

    This work examines the relationship between population growth and economic development in Latin America and assesses progress in the 10 years since the Bucharest World Population Conference. The Latin American population increased from about 159 million in 1950 to 275 million in 1970 and around 325 million in 1980. The rate of growth reached a maximum of 2.8%/year in the early 1970s and has now declined to about 2.3%/year. The regional growth rate is a product of population dynamics that differ greatly in individual countries. Crude birth rates declined in every country of Latin America between 1975-80, but still exceeded 40/1000 in 1980-85 in Bolivia, Ecuador, El Salvador, Haiti, Honduras, and Nicaragua. Current fertility is the result of the different trajectories of the demographic transition in different countries. While fertility in Argentina, Cuba, and Uruguay underwent a slow but sustained decline that began prior to 1960, other countries including Colombia, Costa Rica, Chile, and Venezuela began an accelerated fertility decline in the 1960s that diffused rapidly through all age and social groups. Other countries have still not entered a definite phase of fertility decline. Mortality rates have declined appreciably in Latin America in the past few decades although they remain high in some countries. After the end of World War II and until the mid-1970s, most countries of the region experienced rapid economic growth coupled with profound changes in the productive structure. The industrial labor force grew in almost all countries along with urbanization, the decline of agricultural employment, and the increase of the tertiary sector. These and other important economic advances through the mid-1970s occurred despite rapid population growth, and the beginning of the fertility decline coincided with slowing economic growth that saw negative rates in 1981-82. Various studies have shown that not all population sectors were incorporated in the process of economic and social development. The proportion of the population in active age groups has increased dramatically, but no corresponding increase in employment opportunities has occurred. The informal sector has absorbed most of the excess growth, a trend reflected in the exclusion of a large segment of the population from the fruits of economic progress. Population growth and increased life expectancy have created demands for more retirement benefits, health and educational services, transportation, recreation, and housing. Nevertheless, it cannot be concluded that rapid population growth necessarily has negative consequences for economic development or social welfare. There are indications that the problem of poverty in Latin America could be solved if the political will to do so existed; obstacles to overcoming poverty are not primarily material or population-related. Urbanization, settlement of marginal areas, and relative decline of agricultural areas are 3 trends in spatial distribution of varying intensity and repercussions in different countries.

  12. Risking NATO: Testing the Limits of the Alliance in Afghanistan

    DTIC Science & Technology

    2010-01-01

    without fully anticipating the wide range 30 See Julian E. Barnes, “U.S. Commander in Afghanistan Shifts Focus to Protect- ing People,” Los Angeles...Times, July 26, 2009. See also Julian E. Barnes, “Petraeus Takes Over as Head of U.S. Central Command,” Los Angeles Times, November 1, 2008; Candace...itself to the mission in Afghanistan, recognized that its commit- ment could not be indefinite. See Julian E. Barnes, “Gates Open to Sending More

  13. Reclaiming a Part of the Micmac Heritage.

    ERIC Educational Resources Information Center

    Hamilton, W. D.

    1985-01-01

    Describes a research project which resulted in publication, "The Julian Tribe," and showed how lost Micmac tribal heritage was reconstructed from church, census, county, provincial, and federal records when no tribal printed or secondary accounts or oral tradition remained. (NEC)

  14. Colored Contact Lens Dangers

    MedlinePlus

    ... Halloween Hazard: The Hidden Dangers of Buying Decorative Contact Lenses Without a Prescription Sep. 26, 2013 It ... the truth." Real People, Real Problems with Colored Contact Lenses Julian: Teenager Blinded In One Eye By ...

  15. Where Will All the Jobs Be?

    ERIC Educational Resources Information Center

    Environmental Science and Technology, 1975

    1975-01-01

    Julian Josephson finds the environmental employment picture bleak, but far from hopeless. He looks at training and future trends, and lists a number of leads aimed at helping the unemployed. (Author/BT)

  16. 2. Historic American Buildings Survey L. D. Andrew, Photographer Dec. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. Historic American Buildings Survey L. D. Andrew, Photographer Dec. 30, 1936 VIEW FROM MORRISON'S CAF? (CORNER OF WHITAKER & CONGRESS) SHOWING S. FACADE - Gibbons Block, Congress, Saint Julian, Barnard, Whitaker Streets, Savannah, Chatham County, GA

  17. Analysis and High-Resolution Modeling of Tropical Cyclogenesis During the TCS-08 and TPARC Field Campaign

    DTIC Science & Technology

    2014-10-13

    frequency eddies in tropical cyclone formation. 15. SUBJECT TERMS Tropical cyclogenesis, Madden-Julian Oscillation, El nino-Southern Oscillation 16...hand, the large-scale control of the Madden-Julian Oscillation (MJO) and El Nino-Southern Oscillation (ENSO) on TC genesis in the WNP will be examined...through the TC southeastward energy dispersion, by which the induces Rossby wave train triggers the convection-circulation feedback . The indirect process

  18. Home Guard, Police, and the Social Contract

    DTIC Science & Technology

    2011-03-15

    Selected COIN Theory Counterinsurgency theorists Galula, Kitson, Thompson, Paget and Kilcullen are largely in agreement on the need for comprehensive...to the rural areas.12 Colonel Julian Paget also highlights the importance of separating the population from insurgents through either resettling...www.globalsecurity.org/military/library/report/1990/PFD.htm (accessed December 13, 2010). 11 Ibid. 12 Ibid. 13 Julian Paget , Counter-Insurgency Operations

  19. Thermodynamic Air/Ocean Feedback Mechanisms in the Equatorial Pacific

    DTIC Science & Technology

    1992-09-01

    statistical interpolation scheme, Monthly Weather Review, 109, 701-721, 1981. McCreary , Julian P. Jr., A model of tropical ocean-atmospheric interaction...Monthly Weather Review, 111, 370-387. McCreary , Julian P. Jr., and Anderson, David L. T., An overview of coupled ocean-atmosphere models of El Nino and...background section, but for now, it is sufficient to say that they are interchangeable. Numerous published theories (Wyrtki, 1975; McCreary , 1983

  20. The Evolution of Upper Ocean Thermal Structure at 10 deg N, 125 deg W during 1997-1998

    DTIC Science & Technology

    2003-09-01

    heat fluxes, westward propagating easterly waves, the Madden- Julian Oscillation, and atmospheric Rossby waves propagating from mid-latitudes (Gray and...transient adjustment of the tropical oceans away from western boundaries (e.g. White, 1977; McCreary , 1977; Meyers, 1979; Kessler, 1990). In a...cific. J. Geophys. Res., 95:5183-5217, 1990. [29] W.S. Kessler. EOF representations of the Madden- Julian Oscillation and its connection with ENSO. J

  1. An Observational Study of the Local and Remote Response of the Equatorial Pacific to Westerly Wind Events during the 1991-92 El Nino

    DTIC Science & Technology

    1992-12-01

    layer depths, and a rise in sea level along the South American coast (Wyrtki, 1975; McCreary , 1976; Philander, 1981; Lukas et. al., 1984; Harrison and...separate the intraseasonal oscillations (Madden and Julian , 1972) from the higher frequency westerly wind bursts. Filtering was performed by applying...of the western Pacific ocean. J. Geophys. Rev., 69, 3343-3357. Madden, R.A., and P. Julian , 1972: Description of global scale circulation cells in the

  2. The State of Scientific Visualization with Regard to the NASA EOS Mission to Planet Earth

    NASA Technical Reports Server (NTRS)

    Christy, John R.; Botts, Michael E.; Newchurch, Michael; McNider, Richard T.

    1996-01-01

    In support of the mission to better understand the dynamics of the global atmosphere, John R. Christy and Nathaniel D. Reynolds investigated a wide range of topics. Christy worked closely with NASA scientist Roy Spencer to develop a data set of precision temperature measurements using the NASA built Microwave Sounding Unit. The data from this effort has received international recognition as they provide a source of precise information for the most difficult of environmental issues in the global climate change arena. In addition, Christy coordinated modeling research with NASA scientist Franklin Robertson with research focusing on the validation of global model output using various satellite data with sophisticated statistical techniques. Reynolds worked with NASA scientist Timothy Miller on idealized flows in a rotating annulus and the application of the results to the general circulation of the atmosphere. Additional work was carried out in investigation of stratospheric ozone fluctuations due to dynamical causes.

  3. Microwave sounding units and global warming

    NASA Technical Reports Server (NTRS)

    Gary, Bruce L.; Keihm, Stephen J.

    1991-01-01

    A recent work of Spencer and Christy (1990) on precise monitoring of global temperature trends from satellites is critically examined. It is tentatively concluded in the present comment that remote sensing using satellite microwave radiometers can in fact provide a means for the monitoring of troposphere-averaged air temperature. However, for this to be successful more than one decade of data will be required to overcome the apparent inherent variability of global average air temperature. It is argued that the data set reported by Spencer and Christy should be subjected to careful review before it is interpreted as evidence of the presence or absence of global warming. In a reply, Christy provides specific responses to the commenters' objections.

  4. A Big RISC

    DTIC Science & Technology

    1983-07-18

    Cycle Time CalculatioD Appendix D. BRISC Parts L.iat Appendix E. BRISC Dnwillp Appendix F. DAPL Microcode L.iatiDp 1. IDtroductlon A Btg RISC...ud .f. Only two bita alec:t timin& iD any way, they are the Pipe Control bita described above. A microcode aaaembler c:3lled DAPL ia used to...create microco de [or BRISC. li Only a au~ set or the lull capability or DAPL is required bec:~use or the simpl icity or the BRISC mic:roc:ode. DAPL is

  5. Evaluation of the Effectiveness of the Defense Systems Acquisition Review Council (DSARC). Volume I. Technical Report with Appendices A and B.

    DTIC Science & Technology

    1983-04-04

    Roland 11 Perry Nelson* Hacker Murray 6/79 NAVSTAR 11 Dineen’ Shorey’ Hessler’ Murray 11/79 Copperhead 11 LaBerge * Pinie Wacker Murray 1/SO FYS III... LaBerge ’ Danzig’ Uarshman’ Christie’* 10/80 FVS PR LaBerge ’ Danzig* Bting Cua 6/82 LAMPS III Wade* Leach’ Heth h % Not a principal. "no appointee, actg...to illustrate the situation: FVS Program Review 1/80 LaBerge *Danzig* Harshman*Christie* Program Review 10/80 LaBerge *Danzig* Borsting Murray TRIDENT

  6. DNA fingerprinting in zoology: past, present, future.

    PubMed

    Chambers, Geoffrey K; Curtis, Caitlin; Millar, Craig D; Huynen, Leon; Lambert, David M

    2014-02-03

    In 1962, Thomas Kuhn famously argued that the progress of scientific knowledge results from periodic 'paradigm shifts' during a period of crisis in which new ideas dramatically change the status quo. Although this is generally true, Alec Jeffreys' identification of hypervariable repeat motifs in the human beta-globin gene, and the subsequent development of a technology known now as 'DNA fingerprinting', also resulted in a dramatic shift in the life sciences, particularly in ecology, evolutionary biology, and forensics. The variation Jeffreys recognized has been used to identify individuals from tissue samples of not just humans, but also of many animal species. In addition, the technology has been used to determine the sex of individuals, as well as paternity/maternity and close kinship. We review a broad range of such studies involving a wide diversity of animal species. For individual researchers, Jeffreys' invention resulted in many ecologists and evolutionary biologists being given the opportunity to develop skills in molecular biology to augment their whole organism focus. Few developments in science, even among the subsequent genome discoveries of the 21st century, have the same wide-reaching significance. Even the later development of PCR-based genotyping of individuals using microsatellite repeats sequences, and their use in determining multiple paternity, is conceptually rooted in Alec Jeffreys' pioneering work.

  7. DNA fingerprinting in anthropological genetics: past, present, future

    PubMed Central

    2013-01-01

    In 1985, Sir Alec Jeffreys developed the variable-number tandem repeat method used to identify individuals and giving researchers the first DNA fingerprints. These initial methods were used in anthropological genetics, a field that uses a comparative approach to answer questions about human history, including the discernment of the origin of Native American populations and the discrimination of clan affiliation from individuals in Siberia. The technological and methodological advances since this time have led to the use of many more markers, including restriction fragment length polymorphisms, Y chromosomal and autosomal short tandem repeats, single nucleotide polymorphisms, and direct sequencing not only to identify individuals, but to examine frequencies and distributions of markers (or “prints”) of entire populations. In the field of anthropological genetics these markers have been used to reconstruct evolutionary history and answer questions concerning human origins and diaspora, migration, and the effects of admixture and adaptation to different environments, as well as susceptibility and resistance to disease. This review discusses the evolution of DNA markers since their application by Sir Alec Jeffreys and their applications in anthropological genetics. PMID:24245746

  8. DNA fingerprinting in zoology: past, present, future

    PubMed Central

    2014-01-01

    In 1962, Thomas Kuhn famously argued that the progress of scientific knowledge results from periodic ‘paradigm shifts’ during a period of crisis in which new ideas dramatically change the status quo. Although this is generally true, Alec Jeffreys’ identification of hypervariable repeat motifs in the human beta-globin gene, and the subsequent development of a technology known now as ‘DNA fingerprinting’, also resulted in a dramatic shift in the life sciences, particularly in ecology, evolutionary biology, and forensics. The variation Jeffreys recognized has been used to identify individuals from tissue samples of not just humans, but also of many animal species. In addition, the technology has been used to determine the sex of individuals, as well as paternity/maternity and close kinship. We review a broad range of such studies involving a wide diversity of animal species. For individual researchers, Jeffreys’ invention resulted in many ecologists and evolutionary biologists being given the opportunity to develop skills in molecular biology to augment their whole organism focus. Few developments in science, even among the subsequent genome discoveries of the 21st century, have the same wide-reaching significance. Even the later development of PCR-based genotyping of individuals using microsatellite repeats sequences, and their use in determining multiple paternity, is conceptually rooted in Alec Jeffreys’ pioneering work. PMID:24490906

  9. An Educator's Perspective: Five "E's" to Success with Common Core Standards

    ERIC Educational Resources Information Center

    Neria, Christy M.

    2014-01-01

    As a result of the implementation--and rigor--of the Common Core State Standards, many educators are looking for a different teaching approach to make content accessible to all students. Successful implementation of these standards for deaf and hard of hearing students can be achieved through what Christy Neria calls the "Five E's."…

  10. Library of Michigan Reflections on the Year 2000.

    ERIC Educational Resources Information Center

    Michigan Library, Lansing.

    This pamphlet focuses on developments in the Library of Michigan during the year 2000. The year 2000 marks the Library of Michigan's 140th consecutive year serving the citizens of Michigan as a federal depository library. A profile of the new State Librarian of Michigan, Christie Pearson Brandau, is given, including her goals as State Librarian,…

  11. Sleep: The E-ZZZ Intervention

    ERIC Educational Resources Information Center

    Bergin, Christi A.; Bergin, David A.

    2009-01-01

    Research has shown that students who do not get enough sleep are more likely to misbehave in school and have lower academic achievement than their peers with healthy sleeping habits. In this article, Christi A. Bergin and David A. Bergin share research into students' sleep habits and conclude that helping students get adequate sleep has potential…

  12. THE FUNGICIDE PROCHLORAZ: IN VITRO ANDROGEN ANTAGONISM, PARTURITION DELAYS, AND MALE REPRODUCTIVE MALFORMATIONS IN RATS

    EPA Science Inventory

    The Fungicide Prochloraz: In vitro Androgen Antagonism, Parturition Delays, and Male Reproductive Malformations in Rats.
    Nigel C. Noriega, Joseph Ostby, Christy Lambright, Vickie S. Wilson, and L. Earl Gray Jr.,
    noriega.nigel@epa.gov
    US EPA
    Prochloraz (PZ) is an imid...

  13. EFFECTS OF GESTATIONAL PROCHLORAZ ADMINISTRATION ON MALE REPRODUCTIVE DEVELOPMENT IN RATS. IN VIVO ASSESSMENTS OF A FUNGICIDE WITH MULTIPLE IN VITRO EFFECTS

    EPA Science Inventory

    Effects of Gestational Prochloraz Administration on Male Reproductive Development in Rats. In Vivo Assessments of a Fungicide with multiple In Vitro effects.

    Nigel C. Noriega, Joseph Ostby, Christy Lambright, Vickie S. Wilson,and L. Earl Gray Jr.,
    noriega.nigel@epa.gov<...

  14. EFFECTS OF GESTATIONAL PROCHLORAZ ADMINISTRATION ON MALE REPRODUCTIVE DEVELOPMENT IN RATS. IN VIVO ASSESSMENTS OF A FUNGICIDE WITH MULTIPLE IN VITRO EFFECTS

    EPA Science Inventory

    Effects of Gestational Prochloraz Administration on Male Reproductive Development in Rats. In Vivo Assessments of a Fungicide with multiple In Vitro effects.

    Nigel C. Noriega, Joseph Ostby, Christy Lambright, Vickie S. Wilson, and L. Earl Gray Jr.,
    noriega.nigel@epa.go...

  15. PERIPUBERTAL DI (2-ETHYLHEXYL) PHTHALATE EXPOSURE INHIBITS ANDROGEN SENSITIVE TISSUE DEVELOPMENT AND DELAYS PUBERTY IN MALE SPRAGUE-DAWLEY RATS

    EPA Science Inventory

    PERIPUBERTAL DI (2-ETHYLHEXYL) PHTHALATE EXPOSURE INHIBITS ANDROGEN SENSITIVE TISSUE DEVELOPMENT AND DELAYS PUBERTY IN MALE SPRAGUE-DAWLEY RATS

    Nigel Noriega, Jonathan Furr, Christy Lambright, Vickie Wilson, L. Earl Gray Jr.

    The plasticizer Di (2-ethylhexyl) phtha...

  16. EFFECTS OF GESTATIONAL PROCHLORAZ ADMINISTRATION ON MALE REPRODUCTIVE DEVELOPMENT IN RATS: IN VIVO ASSESSMENTS OF A FUNGICIDE WITH MULTIPLE IN VITRO EFFECTS

    EPA Science Inventory

    Effects of Gestational Prochloraz Administration on Male Reproductive Development in Rats. In Vivo Assessments of a Fungicide with multiple In Vitro effects.

    Nigel C. Noriega, Joseph Ostby, Christy Lambright, Vickie S. Wilson,and L. Earl Gray Jr.,
    noriega.nigel@epa.gov<...

  17. Facility fence-line monitoring using passive samplers

    EPA Science Inventory

    In 2009, the U.S. EPA executed a year-long field study at a refinery in Corpus Christi, Texas, to evaluate the use of passive diffusive sampling technology for assessing time-averaged benzene concentrations at the facility fence line. The study utilized 14-day time-integrated Car...

  18. Choreographing Change One Step at a Time: Integrating Technology in Teacher Education.

    ERIC Educational Resources Information Center

    Falba, Christy J.; Zehm, Stanley J.; Bean, Tom; Markos, Patricia A.; Dixon, Juli K; McKinney, Marilyn

    The papers presented as part of this symposium explore several aspects of integrating technology in teacher education. The title paper, presented by Christy J. Falba, reports on a study to investigate the process and progress of integrating technology into university level teacher education courses from the perspective of the university…

  19. Learning My Way. Papers from the National Conference on Adult Aboriginal Learning (Perth, Western Australia, September 1988). A Special Edition of Wikaru 16.

    ERIC Educational Resources Information Center

    Harvey, Barbara, Comp.; McGinty, Suzanne, Comp.

    These 31 papers dealing with adult aboriginal learning are divided into three sections. The keynote speakers' papers appear first in each section. Section 1, Learning Our Way, contains these papers: "The Invasion of Aboriginal Education" (Christie); "The Drover's Daughter" (Bedford); "Nyungar Women Returning to…

  20. 77 FR 48586 - Notice of Final Federal Agency Actions on United States Highway 77

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-14

    ... Corpus Christi, Texas to US 83 in Harlingen, Texas. Those actions grant licenses, permits, and approvals..., Room 826, Austin, Texas 78701; telephone: (512) 536-5960; email: gregory.punske@dot.gov . The FHWA Texas Division Office's normal business hours are 7:45 a.m. to 4:15 p.m. (central time) Monday...

  1. PHTHALATE ESTER-INDUCED MALFORMATIONS ARE ASSOCIATED WITH CHANGES IN GENE EXPRESSION AND STEROID HORMONE PRODUCTION IN THE FETAL RAT TESTIS DURING SEXUAL DIFFERENTIATION

    EPA Science Inventory

    Phthalate ester-induced gubernacular ligament lesions are associated with reduced Insl3 gene expression in the fetal rat testis during sexual differentiation.
    Vickie S Wilson, Christy Lambright, Johnathan Furr, Joseph Ostby, Carmen Wood, Gary Held, L.Earl Gray Jr.
    U.S. EPA,...

  2. It's (Not Just) the Economy, Stupid

    ERIC Educational Resources Information Center

    Russell, Malik

    2010-01-01

    Just as the recession has taken a toll in other states, New Jersey state budget coffers are shriveling up as public colleges and other state-supported services are asked to do more with less. New Jersey Gov. Chris Christie's slashing of $173 million from public colleges and universities has drawn the ire of higher education leaders, educators and…

  3. ECS Prepares to Set Agenda, Find President

    ERIC Educational Resources Information Center

    Hoff, David J.

    2006-01-01

    The ECS, like other nonprofit groups serving state officials, has faced financial difficulties in recent years, starting when states faced severe revenue shortfalls early in the decade. But its problems became public this spring when Kathy Christie, the group's No. 2 official and a 17-year ECS employee, resigned and said in a letter to the ECS…

  4. Q & A with Ed Tech Leaders: Interview with Bryant Griffith

    ERIC Educational Resources Information Center

    Shaughnessy, Michael F.

    2015-01-01

    Bryant Griffith is a Regents Professor at Texas A&M University-Corpus Christi and Director of the Curriculum and Instruction Doctoral Program. Previously, he was Professor and Director of the School of Education at Acadia University, and Professor and Associate Dean at the University of Calgary. His research interests include situated…

  5. An REU Experience with Micro Assembly Workcell Research

    ERIC Educational Resources Information Center

    Stapleton, William; Asiabanpour, Bahram; Jimenez, Jesus; Um, Dugan

    2010-01-01

    Under an NSF REU center grant REU-0755355 entitled "Micro/Nano Assembly Workcell Via Micro Visual Sensing and Haptic Feedback", Texas A&M University-Corpus Christi and Texas State University-San Marcos collaboratively hosted two groups of 10 students from different backgrounds for 10 weeks each in Summer 2008 and 2009 respectively.…

  6. Meeting Individual Needs Fosters Retention.

    ERIC Educational Resources Information Center

    Artman, Johanne I.; Gore, Robert C.

    A 1991 study of non-returning students at Del Mar College (DMC), in Corpus Christi, Texas, revealed that only 37.9% of these students were actual dropouts (i.e., had failed to accomplish their educational goals, and had no plans to take up further study). Retention studies conducted in Texas between 1985 and 1989 have shown that DMC has…

  7. Politics and Play: Meditations on Rhetorical Bodily Performance

    ERIC Educational Resources Information Center

    Pauliny, Tara

    2013-01-01

    Focusing on the drag king performances of Christie Whisman, who lived and worked in Columbus, Ohio, USA, from 1999 to 2001, this essay argues that rhetorical bodily performances have the capacity not only to subvert normalised notions of identity categories, but that such performances can also create alternate pedagogical sites that persuasively…

  8. Ariadne's Thread: Using Social Presence Indices to Distinguish Learning Events in Face-to-Face and ICT-Rich Settings

    ERIC Educational Resources Information Center

    Baskin, Colin; Henderson, Michael

    2005-01-01

    Drawing on ancient Greek mythology, this article traces the learning experiences of 164 pre-service education students as they make the transition from a conventional face-to-face (f-2-f) learning environment to an Information and Communication Technology (ICT) rich setting. Influenced by Social Presence Theory (Short, Williams & Christie,…

  9. Data Mining for Double Stars in Astrometric Catalogs

    DTIC Science & Technology

    2006-03-22

    Astron. Gesell . de Ball (1904) 76 WFD1906a........... Cape General Catalog Gill (1906) 11 WFD1906b........... Kat. der Astron. Gesell . Becker (1906... Gesell . Skinner (1908) 73 WFD1909............. Greenwich Second Nine Year Catalog Christie (1909) 127 WFD1914............. Abbadia Observatory (Algiers

  10. Enhanced Teacher Training Program

    ERIC Educational Resources Information Center

    Harrington, Ingrid

    2013-01-01

    Teacher preparation and preparedness have been the focus of much research connecting quality teaching and learning, retention, and teacher satisfaction (Halsey, 2005; Hayes, Mills, Christie, & Lingard, 2006; MCEETYA, 2006). The successful recruitment and retention of teachers to rural and remote schools Australia-wide has been problematic for…

  11. The Gates' Foundation and the Future of U.S. Public Education: A Call for Scholars to Counter Misinformation Campaigns

    ERIC Educational Resources Information Center

    Kovacs, Philip E.; Christie, H. K.

    2008-01-01

    Int his essay, the authors identify and problematize the claims and activities of four think tanks supported by contributions from the Bill and Melinda Gates Foundation. Kovacs and Christie attempt to show that these contributions support scholars and research of dubious quality, engage in political science abuse, and perpetuate discourses and…

  12. 75 FR 63533 - Environmental Impact Statement: Cameron County, TX

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-15

    ... proposed improvements to United States Highway 181/State Highway 286 (Crosstown Expressway), in Nueces... Nueces County, Texas. The project limits were defined as the limits of the schematic design. The project... the Corpus Christi Ship Channel but south of the Nueces Bay Causeway; the southern limit was the...

  13. Young Children. IDRA Focus.

    ERIC Educational Resources Information Center

    IDRA Newsletter, 1998

    1998-01-01

    This theme issue includes five articles that focus on educational, cognitive, and brain research with implications for early childhood educators, including those who work with limited-English-proficient, minority, and economically disadvantaged children. "Coming to Grips with Reading Instruction at the Early Grades" (Christie L. Goodman)…

  14. Information Assurance Building Educational Capacity

    DTIC Science & Technology

    2006-06-01

    Trusted Collaboration (Texas A&M University, Corpus Christi with Purdue University) • At least 16 published papers o Partow-Navid, Parviz and...Partow-Navid, Parviz and Ludwig Slusky. “IT Security in Pubic Organiza- tions.” In The Encyclopedia of Digital Government, edited by Ari Veikko

  15. Nominees Set High Standards, Support Student Initiatives.

    ERIC Educational Resources Information Center

    Harris, Carla

    2003-01-01

    Describes the winner and other nominees for the "Administrator of the Year" award presented nationally by the Journalism Education Association. Explains that W. Charles Dill, Don Senti, Juan Gonzales, Christy Slagle, Linda Quinn, Gary Davis, and Lucinda Lee Katz all set high standards, valued student press rights, and supported students. (PM)

  16. A Cross-Case Analysis of Growth Model Programs in Three States

    ERIC Educational Resources Information Center

    Gardella, Jennifer L.

    2013-01-01

    Signed into Law on January 8, 2002, the 1,180 page No Child Left Behind Act (NCLB) shifted the course of public education in America. For the first time accountability was firmly placed at the center of school operations by requiring a systematic approach to achieving reform and improving all areas of school life (Wanker & Christie, 2005). As…

  17. 78 FR 24433 - Notice of Public Meeting of the Central California Resource Advisory Council

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-25

    ...) will meet as indicated below. DATES: A business meeting will be held Friday, May 10, 2013, at the... Subgroup will be held on May 9 from noon to 1:30 p.m. at the community center, followed by an orientation... District Manager Este Stifel, (916) 978-4626; or BLM Public Affairs Officer David Christy, (916)...

  18. Environmental Impact Research Program. Doveweeds (Croton supp.) Section 7.4.2, US Army Corps of Engineers Wildlife Resources Management Manual.

    DTIC Science & Technology

    1986-07-01

    1975. Flora of the Texas Coastal Bend. Welder Wildl. Found. Contrib. B-6. Mission Press, Corpus Christi, Tex. 262 pp. Korschgen, L. J. 1948. Late-fall...Illinois. Trans. Ill. Acad. Sci. 55:115-129. Radford, A. E., H. E. Ahles, and C. R. Bell. 1968. Manual of the Vascular Flora of the Carolinas. Univ. N.C

  19. Getting the Most From Your Hazardous Material Management System

    DTIC Science & Technology

    2011-05-01

    Bragg Ft. Stewart Ft. Gordon Redstone Arsenal Ft. Rucker Anniston AD Blue Grass AD Ft. Knox Ft. Hamilton West Point Picatinny Arsenal Walter Reed Rock...NMRC - FT Hood - FT Gillem - FT Rucker - Natick Labs Stand alone - Tobyhanna AD - Anniston AD - Letterkenny AD - Corpus Christi AD Army Breakout Session

  20. Beyond Learning to Canoe

    ERIC Educational Resources Information Center

    Duncan, Dale

    2007-01-01

    Franki Lodge and her coworkers help run Toronto's Inner City Outtripping Centre (ICOC), an outdoor education program aimed at innercity youth. Started in 1995 to reduce conflict between rival gangs in Christie Pits Park, the organization has since grown to include the Paddle and Picnic program (day camps where kids, teens and even seniors canoe up…

  1. Vegetation dynamics of restored and remnant Willamette Valley, OR wet prairie wetlands

    EPA Science Inventory

    Wet prairie wetlands are now one of the rarest habitat types in the Willamette Valley of Oregon, USA. Less than two percent of their historic extent remains, with most having been converted into agricultural fields (Christy and Alverson 2011, ONHP 1983). This habitat is the obl...

  2. DNA ARRAYS TO MONITOR GENE EXPRESSION IN RAT BLOOD AND UTERUS FOLLOWING 17-BETA-ESTRADIOL EXPOSURE: BIOMONITORING ENVIRONMENTAL EFFECTS USING SURROGATE TISSUES

    EPA Science Inventory

    DNA arrays to monitor gene expression in rat blood and uterus following 17-b-estradiol exposure - biomonitoring environmental effects using surrogate tissues
    John C. Rockett, Robert J. Kavlock, Christy R. Lambright, Louise G. Parks, Judith E. Schmid, Vickie S. Wilson, Carmen W...

  3. Proceeding of the 2014 sorghum improvement conference of north america (SICNA)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The 2014 Sorghum Improvement Conference of North America (SICNA 2014) meeting was held at the Texas A&M AgriLife Research and Extension Center , Agnes, Corpus Christi, TX on June 25-27, 2014. The meeting was attended by about 80 participants representing a diverse cross section of the sorghum indus...

  4. MALFORMATIONS IN GUBERNACULAR LIGAMENT DEVELOPMENT INDUCED BY DEHP, DBP, AND BBP ARE ASSOCIATED WITH DECREASES IN INSL3 GENE EXPRESSION IN THE FETAL RAT TESTIS

    EPA Science Inventory

    Malformations in gubernacular ligament development induced by DEHP, DBP, and BBP are associated with decreases in insl3 gene expression in the fetal rat testis.
    Vickie S.Wilson, Christy Lambright, Johnathan Furr, Carmen Wood, Gary Held, L. Earl Gray Jr. U.S. EPA, ORD, NHEER...

  5. Acquisition Policy Effectiveness: Department of Defense Experience in the 1970s

    DTIC Science & Technology

    1979-10-01

    Gary Christie and Mr. Raymond Do- minguez (Office of the Assistant Secretary of Defense (Comptroller)), Colonel Lau - ris M. Eek, Jr. (U.S. Army...and Dak * Adequacy 5 Issues Not Addressed Here 6 Outline of the Report 8 II. RESPONSES TO THE PACKARD INITIATIVES 10 Formal Responses

  6. The Rural Bellwether.

    ERIC Educational Resources Information Center

    Walker, Sherry Freeland, Ed.

    2001-01-01

    This theme issue of "State Education Leader" contains eight articles on rural education. "The Rural Bellwether" (Kathy Christie) discusses declining enrollment in rural schools, rural problems with teacher shortages and special education funding, issues related to school size and school district size, and distance learning…

  7. Freshman Composition for the Learning Disabled.

    ERIC Educational Resources Information Center

    Gore, Robert C.

    In fall 1992, Del Mar College (DMC), in Corpus Christi, Texas, offered for the first time a college-level composition class for students clinically diagnosed as learning disabled (LD), with the rationale that if LD students were first grouped together to learn the fundamentals of college-level writing and find success among their peers, they would…

  8. Book review: Handbook of the birds of the world, Volume 8, Broadbills to Tapaculos

    USGS Publications Warehouse

    Gustafson, Mary

    2004-01-01

    No abstract available.Review info: Handbook of the Birds of the World, Volume 8, Broadbills to Tapaculos. Edited by Josep del Hoyo, Andrew Elliott, and David Christie. Lynx Edicions, Barcelona, Spain. 2003: 845 pp., 81 color plates, over 470 color photographs, 672 maps. ISBN: 8487334504, $195.00 (cloth)

  9. Popular Literature: Its Compatibility with the Basics.

    ERIC Educational Resources Information Center

    Matthews, Dorothy, Ed.

    1983-01-01

    This special journal issue contains nine articles on the subject of using popular literature in the classroom. Subjects covered in the articles include (1) using vernacular supernatural literature to teach the skills of literary analysis, (2) teaching Agatha Christie's "Curtain," (3) pairing the classics with detective fiction, (4) using fantasy…

  10. Early Imagining and the Development of Empathy.

    ERIC Educational Resources Information Center

    Sutherland, Margaret B.

    1985-01-01

    Considers possible links between development of empathy and some children's spontaneous creation of imaginary companions or situations, citing examples of Agatha Christie's "Autobiography." Questions if such activities show ability to "decenter emotionally." Suggests need for better methods of assessing emotional decentering…

  11. Pulling It Together: Using Integrative Assignments as Empirical Direct Measures of Student Learning for Learning Community Program Assessment

    ERIC Educational Resources Information Center

    Huerta, Juan Carlos; Sperry, Rita

    2013-01-01

    This article outlines a systematic and manageable method for learning community program assessment based on collecting empirical direct measures of student learning. Developed at Texas A&M University--Corpus Christi where all full-time, first-year students are in learning communities, the approach ties integrative assignment design to a rubric…

  12. A British national observatory: the building of the New Physical Observatory at Greenwich, 1889-1898.

    PubMed

    Higgitt, Rebekah

    2014-12-01

    Over its long history, the buildings of the Royal Observatory in Greenwich were enlarged and altered many times, reflecting changing needs and expectations of astronomers and funders, but also the constraints of a limited site and small budgets. The most significant expansion took place in the late nineteenth century, overseen by the eighth Astronomer Royal, William Christie, a programme that is put in the context of changing attitudes toward scientific funding, Christie's ambitious plans for the work and staffing of the Observatory and his desire to develop a national institution that could stand with more recently founded European and American rivals. Examination of the archives reveals the range of strategies Christie was required to use to acquire consent and financial backing from the Admiralty, as well as his opportunistic approach. While hindsight might lead to criticism of his decisions, Christie eventually succeeded in completing a large building - the New Physical Observatory - that, in its decoration, celebrated Greenwich's past while, in its name, style, structure and contents, it was intended to signal the institution's modernization and future promise.

  13. Papers in Syntax. Working Papers in Linguistics No. 42.

    ERIC Educational Resources Information Center

    Kathol, Andreas, Ed.; Pollard, Carl, Ed.

    1993-01-01

    This collection of working papers in syntax includes: "Null Objects in Mandarin Chinese" (Christie Block); "Toward a Linearization-Based Approach to Word Order Variation in Japanese" (Mike Calcagno); "A Lexical Approach to Inalienable Possession Constructions in Korean" (Chung, Chan); "Chinese NP Structure"…

  14. Optimizing a Synthetic Signaling System, Using Mathematical Modeling to Direct Experimental Work

    DTIC Science & Technology

    2014-09-05

    Journal of Experimental Botany 53, 1871-1877, doi:10.1093/jxb/erf050 (2002). 52 Looger, L. L., Dwyer, M. A., Smith, J. J. & Hellinga, H. W...P. F., Christie, J. M. & Terry, M. J. Many hands make light work. Journal of Experimental Botany 58, 3071-3077, doi:10.1093/jxb/erm251 (2007).

  15. Don Hammill: A Personal Perspective on the Field of Learning Disabilities, 3-Tier, and RTI

    ERIC Educational Resources Information Center

    Intervention in School and Clinic, 2010

    2010-01-01

    Don D. Hammill received all of his formal education in Texas schools, culminating in a doctorate in educational psychology-special education from the University of Texas at Austin in 1963. He had previously served as a teacher in the Corpus Christi (Texas) public schools and as a speech and language therapist in the Deer Park (Texas) public…

  16. Behavioral Effects of Enrichment and Nicotine in Female Sprague Dawley Rats

    DTIC Science & Technology

    2009-05-01

    Grunberg lab, I was graciously taken under the wings of all my labmates (Christie Oates Simpson-McKenzie, Michael Perry, Sarah Shafer Berger, Kristen...incision within the shave region approximately 1 cm below the scapulae was made with blunt-nosed, curved- tipped Mayo surgical scissors, a pocket was

  17. LATE GESTATIONAL EXPOSURE TO THE FUNGICIDE PROCHLORAZ DELAYS THE ONSET OF PARTURITION AND CAUSES REPRODUCTIVE MALFORMATIONS IN MALE RAT OFFSPRING

    EPA Science Inventory

    Late gestational exposure to the fungicide prochloraz delays the onset of parturition and causes reproductive malformations in male rat offspring.
    Nigel C. Noriega, Joseph Ostby, Christy Lambright, Vickie S. Wilson, and L. Earl Gray Jr.,

    Prochloraz (PZ) is an imidazol...

  18. PHTHALATE ESTER-INDUCED GUBERNACULAR LIGAMENT LESIONS ARE ASSOCIATED WITH REDUCED INSL3 GENE EXPRESSION IN THE FETAL RAT TESTIS DURING SEXUAL DIFFERENTIATION

    EPA Science Inventory

    Phthalate ester-induced gubernacular ligament lesions are associated with reduced Insl3 gene expression in the fetal rat testis during sexual differentiation.
    Vickie S Wilson, Christy Lambright, Johnathan Furr, Joseph Ostby, Carmen Wood, Gary Held, L.Earl Gray Jr.
    U.S. EPA,...

  19. 76 FR 34177 - Reducing Regulatory Burden; Retrospective Review Under E.O. 13563

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-13

    ... Regulatory Burden; Retrospective Review Under E.O. 13563 AGENCY: Office of the Secretary, Labor. ACTION... made available to the public on http://dolregs.ideascale.com . Authority: E.O. 13653, 76 FR 3821, Jan. 21, 2011; E.O. 12866, 58 FR 51735, Oct. 4, 1993. Dated: June 7, 2011. e. christi...

  20. Parent, Family and Community Involvement. IDRA Focus.

    ERIC Educational Resources Information Center

    IDRA Newsletter, 1997

    1997-01-01

    This theme issue includes six articles about nurturing parent and community involvement in schools, particularly schools serving Hispanic, immigrant, or economically disadvantaged students. "Thinking about Learning: The Community and Academic Standards" (Oanh H. Maroney, Aurelio M. Montemayor) describes a Corpus Christi (Texas) project…

  1. Lifelong Learning and Leadership. IDRA Focus.

    ERIC Educational Resources Information Center

    IDRA Newsletter, 1996

    1996-01-01

    This theme issue focuses on programs that promote lifelong learning through literacy education, parent empowerment, or parent leadership training. "Adult Literacy Outreach Innovations: Porque Significa Tanto" (Christie L. Goodman) describes a Texas outreach project that focuses on raising public awareness about adult education and…

  2. ECS Resignations Raise Questions of Fiscal Health: Leader of State Policy Group Says Problems Can Be Fixed

    ERIC Educational Resources Information Center

    Hoff, David J.

    2006-01-01

    Kathy Christie, senior vice president at the Education Commission of the States (ECS), resigned on May 1, 2006, saying that the Denver-based group faces a financial crisis, and that she doubts the current ECS president can fix it. By the end of the week, the accounting manager had also resigned, expressing similar concerns, and two policy analysts…

  3. Verde plant bug (Hemiptera: Miridae) feeding injury to cotton bolls charcterized by boll age, size and damage ratings

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Our studies over 2 years (2009 and 2010) and 2 locations (Weslaco and Corpus Christi, TX) investigated the relationship of feeding-injury of the verde plant bug, Creontiades signatus Distant, to a range of cotton boll age classes further defined by boll diameter and accumulated degree-days (anthesis...

  4. The Attempt to Reform School Councils in the 1980s: A Rehearsal for the Furore That Greeted the Proposals for School Boards?

    ERIC Educational Resources Information Center

    O'Brien, Jim

    2014-01-01

    In the light of the Scottish Government's commitment to the principles enshrined in the Christie Commission and developing approaches worldwide to public administration, this article considers the forces at work and the major arguments for suggesting the need for increased and enhanced participation by parents in educational decision-making and…

  5. ERMAS: Experiment in Reading for Mexican American Students.

    ERIC Educational Resources Information Center

    Hillerich, Robert L.; Thorn, Florence H.

    The first year of an ESEA/Title III experimental program to teach beginning reading in Spanish to 300 Mexican-American first graders in Corpus Christi, Texas, was described. While learning to read in Spanish, the children simultaneously learned English through aural-oral approach, with the goal of reading in both languages by the end of grade 2. A…

  6. The Role of Eddies in the General Ocean Circulation: Proceedings of ’Aha Huliko’a Hawaiian Winter Workshop Held at Manoa on January 5-7, 1983

    DTIC Science & Technology

    1983-01-01

    fields are shown in Figure 11 for 5 June 1978 ( Julian Day 3665) which is during the intensive period of the POLYMODE Local Dynamics Experiment (P-LDE...extension 54 JULIAN DATE: 3665 I5 DEGREE ISOTHERM .oŘ t MIN*5.31£*02 MAXa6.69E*02 Ci.t .?OE01 700 M STREAMFUNCTION MIN4.?6E#O1 MAXa l.45E#02 C1Z.40E.q1...1400 M STREAMFUNCTION MINs-L42E*O1 MAXsS94EO1 CI.OOE*OI Fig. 11. An analysis of the POLYMODE data at Julian day 3665. The top figure shows the depth

  7. Identification and Function of Ets Target Genes Involved in Lung Cancer Progression

    DTIC Science & Technology

    2013-10-01

    Non-Small Cell Lung Cancer (NSCLC) Progression and Metastasis”. Jun Li1, Julian Carretero2, Carl J O’Hara3, Anne Hinds1, Guetchyn Millien1, Mary C...Primary Adenocarcinoma in Lung” Anita Malek , MD; Hasmeena Kathuria, MD; and Carl O’Hara, MD 12 Conclusions In this progress report, we...Expression in Non-Small Cell Lung Cancer (NSCLC) Progression and Metastasis Jun Li1, Julian Carretero2, Carl J O’Hara3, Anne Hinds1, Guetchyn Millien1

  8. Digital Archiving: Where the Past Lives Again

    NASA Astrophysics Data System (ADS)

    Paxson, K. B.

    2012-06-01

    The process of digital archiving for variable star data by manual entry with an Excel spreadsheet is described. Excel-based tools including a Step Magnitude Calculator and a Julian Date Calculator for variable star observations where magnitudes and Julian dates have not been reduced are presented. Variable star data in the literature and the AAVSO International Database prior to 1911 are presented and reviewed, with recent archiving work being highlighted. Digitization using optical character recognition software conversion is also demonstrated, with editing and formatting suggestions for the OCR-converted text.

  9. Oceanic Environmental Background Observations in the Sargasso Sea during September 1979.

    DTIC Science & Technology

    1980-03-01

    Carlos (1978). Vector Averaging Current Meter Temperature Accuracy and Response Time Test. NAVOCEANO Technical Note No. 6320-1-78. McCullough, James R...Kilometers) SEvery 24 Haurs Starting At 0000 Julian Day 249 File VA0879 Array Meter V-0539 Depth 19?.___IN Latitude 30 29 7 N Start 5 SEP 1979 Long itude...1979 Figure 6.4f. Progressive vector diagram 7 ~54 z EdsL-West Displacement (Kilometer-s) SEvery 24 Hours Starting At 0000 Julian Day � File VA0879

  10. Time-dependent seismic tomography of the Coso geothermal area, 1996-2004

    USGS Publications Warehouse

    Julian, B.R.; Foulger, G.R.

    2005-01-01

    The permanent 18-station network of three-component digital seismometers at the seismically active Coso geothermal area, California, provides high-quality microearthquake (MEQ) data that are well suited to investigating temporal variations in structure related to processes within the geothermal reservoir. A preliminary study [Julian, et al., 2003; Julian, et al., 2004] comparing data from 1996 and 2003 found significant variations in the ratio of the seismic wave-speeds, Vp/Vs, at shallow depths over this time interval. This report describes results of a more detailed study of each year from 1996 through 2004.

  11. The Mira Variable S Orionis: Relationships Between the Photosphere, Molecular Layer, Dust Shell, and SiO Maser Shell at 4 Epochs

    DTIC Science & Technology

    2007-01-01

    the stellar minimum, and the later epochs shortly after the following stellar maximum. 2. Lightcurve and characteristics of S Ori S Ori is a Mira...453 190 days. Figure 1 shows the visual lightcurve of S Ori as a function of Julian Date and stellar phase based on these values. Also indicated are...phase MIDI observations VLBA observations Epoch A B C D AAVSO AFOEV b. Fig. 1. Visual lightcurve of S Ori as a function of Julian Date and stel- lar cycle

  12. Dynamics of the Oceanic Surface Mixed Layer. Proceedings of ’Aha Huliko’a Hawaiian Winter Workshop (4th) Held in Manoa, Hawaii on January 14-16, 1987,

    DTIC Science & Technology

    1987-01-01

    thought to be frictionally balanced ( McCreary , 1981), unlike geostrophically balanced currents at higher latitudes. Intense turbulence occurs in the high...A 1.0 YI 1.5 I I I d I U 331 332 333 334 335 TIME / Julian day 1984 Fig. 6: (a) Surface heat fluxes, (b) mixed layer depth, and contour C= 10 -7 W kg-1...be an integral part of the deep diurnal signal in e. 5 1l.96 x 10ř 4- day night W 2 CD 0 33133333335 Time / Julian Day (OOOOZ) Fig. 7: e averaged from

  13. Large-Scale Atmosphere-Ocean Coupling.

    DTIC Science & Technology

    1984-05-01

    ramifications’that have been el al. (1976) and McCreary (1976) showed that the attached to the phenomenon. Accompanying the El eastward movement of the water...the typical values of- Ox c. - 15 m s- (Madden and Julian , 1972)andc, - 2 :L 8 2 252 JOURNAL OF THE ATMOSPHERIC SCIENCES VOLUME38 b. Nonzero...the equatorial oupling or small wavenumbers. Defining oceans and atmospheres ( Julian and Chervin, 1978). =w - () w"d - ((20)) 4. 1W value problhm S1

  14. DNA fingerprinting in botany: past, present, future

    PubMed Central

    2014-01-01

    Almost three decades ago Alec Jeffreys published his seminal Nature papers on the use of minisatellite probes for DNA fingerprinting of humans (Jeffreys and colleagues Nature 1985, 314:67–73 and Nature 1985, 316:76–79). The new technology was soon adopted for many other organisms including plants, and when Hilde Nybom, Kurt Weising and Alec Jeffreys first met at the very First International Conference on DNA Fingerprinting in Berne, Switzerland, in 1990, everybody was enthusiastic about the novel method that allowed us for the first time to discriminate between humans, animals, plants and fungi on the individual level using DNA markers. A newsletter coined “Fingerprint News” was launched, T-shirts were sold, and the proceedings of the Berne conference filled a first book on “DNA fingerprinting: approaches and applications”. Four more conferences were about to follow, one on each continent, and Alec Jeffreys of course was invited to all of them. Since these early days, methodologies have undergone a rapid evolution and diversification. A multitude of techniques have been developed, optimized, and eventually abandoned when novel and more efficient and/or more reliable methods appeared. Despite some overlap between the lifetimes of the different technologies, three phases can be defined that coincide with major technological advances. Whereas the first phase of DNA fingerprinting (“the past”) was dominated by restriction fragment analysis in conjunction with Southern blot hybridization, the advent of the PCR in the late 1980s gave way to the development of PCR-based single- or multi-locus profiling techniques in the second phase. Given that many routine applications of plant DNA fingerprinting still rely on PCR-based markers, we here refer to these methods as “DNA fingerprinting in the present”, and include numerous examples in the present review. The beginning of the third phase actually dates back to 2005, when several novel, highly parallel DNA

  15. DNA fingerprinting in botany: past, present, future.

    PubMed

    Nybom, Hilde; Weising, Kurt; Rotter, Björn

    2014-01-03

    Almost three decades ago Alec Jeffreys published his seminal Nature papers on the use of minisatellite probes for DNA fingerprinting of humans (Jeffreys and colleagues Nature 1985, 314:67-73 and Nature 1985, 316:76-79). The new technology was soon adopted for many other organisms including plants, and when Hilde Nybom, Kurt Weising and Alec Jeffreys first met at the very First International Conference on DNA Fingerprinting in Berne, Switzerland, in 1990, everybody was enthusiastic about the novel method that allowed us for the first time to discriminate between humans, animals, plants and fungi on the individual level using DNA markers. A newsletter coined "Fingerprint News" was launched, T-shirts were sold, and the proceedings of the Berne conference filled a first book on "DNA fingerprinting: approaches and applications". Four more conferences were about to follow, one on each continent, and Alec Jeffreys of course was invited to all of them. Since these early days, methodologies have undergone a rapid evolution and diversification. A multitude of techniques have been developed, optimized, and eventually abandoned when novel and more efficient and/or more reliable methods appeared. Despite some overlap between the lifetimes of the different technologies, three phases can be defined that coincide with major technological advances. Whereas the first phase of DNA fingerprinting ("the past") was dominated by restriction fragment analysis in conjunction with Southern blot hybridization, the advent of the PCR in the late 1980s gave way to the development of PCR-based single- or multi-locus profiling techniques in the second phase. Given that many routine applications of plant DNA fingerprinting still rely on PCR-based markers, we here refer to these methods as "DNA fingerprinting in the present", and include numerous examples in the present review. The beginning of the third phase actually dates back to 2005, when several novel, highly parallel DNA sequencing

  16. Dollar Summary of Federal Supply Classification and Service Category by Company. Part 7 (2930-5450)

    DTIC Science & Technology

    1990-01-01

    mIto C C C C C C £ C C CC C C C C C C a.. a. am cc m.a .a . m. a a A. Aa a Al 0A aa A a. m. a us 41 CA C E E E E E EC E E E E E C E E E InU cc 0 0 0...em CL3iI3, IVala 00 00 00 z AC C LCLC L L 0 6 LC CeLta & 0 C 6C w alec oL sea4 acC c ,IC c C c cC c C cC 4 121 zzzz zzz zz so--s 64 >. > :a, , "In

  17. BYSTANDER EFFECTS GENOMIC INSTABILITY, ADAPTIVE RESPONSE AND CANCER RISK ASSESSMENT FOR RADIAION AND CHEMICAL EXPOSURES

    EPA Science Inventory

    BYSTANDER EFFECTS, GENOMIC INSTABILITY, ADAPTIVE RESPONSE AND CANCER RISK ASSESSMENT FOR RADIATION AND CHEMICAL EXPOSURES

    R. Julian Preston
    Environmental Carcinogenesis Division, U.S. Environmental Protection Agency, Research Triangle Park, N.C. 27711, USA

    There ...

  18. Conference Highlights of the National Energy Education, Business and Labor Conference (Washington, D.C., January 15-17, 1979).

    ERIC Educational Resources Information Center

    1979

    Included in this document are texts of speeches given at the conference. The speakers whose remarks appear are: (1) John F. O'Leary, Deputy Secretary of the Department of Energy; (2) Cecil D. Andrus, Secretary of Interior; (3) Julian M. Carroll, Governor of Kentucky; (4) Arnold Packer, Assistant Secretary, Department of Labor; and (5) James…

  19. The Duke University Talent Identification Program

    ERIC Educational Resources Information Center

    Putallaz, Martha; Baldwin, Joy; Selph, Hollace

    2005-01-01

    The Duke University Talent Identification Program (Duke TIP) holds the distinguished position of being the first "transplant" of the Center for Talented Youth (CTY) regional talent search model developed by Professor Julian Stanley at Johns Hopkins University. Duke TIP was established in 1980, one year after CTY officially began. This article…

  20. The Center for Talent Development at Northwestern University: An Example of Replication and Reformation

    ERIC Educational Resources Information Center

    Olszewski-Kubilius, Paula

    2005-01-01

    This article describes implementation of the talent search model developed by Julian Stanley at the Center for Talent Development of Northwestern University. While remaining true to the basic components of the talent search, the talent center at Northwestern has emphasized using talent search as a means to influence programming in local schools…

  1. DEVELOPING MECHANISTIC DATA FOR INCORPORATION INTO CANCER AND GENETIC RISK ASSESSMENTS: OLD PROBLEMS AND NEW APPROACHES

    EPA Science Inventory

    26th Lauriston S. Taylor Lecture
    DEVELOPING MECHANISTIC DATA FOR INCORPORATION INTO CANCER AND
    GENETIC RISK ASSESSMENTS: OLD PROBLEMS AND NEW APPROACHES
    R. Julian Preston, Environmental Carcinogenesis Division, U.S. Environmental Protection
    Agency, NHEERL, Research Tr...

  2. Africana Acquisitions; Report of a Publication Survey Trip to Nigeria, Southern Africa, and Europe, 1972.

    ERIC Educational Resources Information Center

    Witherell, Julian W.

    A publication survey trip to Nigeria, Southern Africa, and Europe was taken by Julian W. Witherell of the African Section of the Library of Congress in 1972. The purpose of the trip was to improve the flow of publications about Africa to the Library of Congress. The trip was successful in that personal contacts helpful in obtaining local materials…

  3. Military Intelligence: Its Role in Counterinsurgency,

    DTIC Science & Technology

    1988-04-20

    Classification) Military Intellignece : Its Role In Counterinsurgency (U) 12. PERSONAL AUTHOR(S) LTC (P) Julian M. Campbell, Jr, USA 13a. TYPE OF...combat elements. 1MW operations, in a more visible role, serve as a tangible furce muiltiplier which the theater commander can use in the business of

  4. Learning at Not-School: A Review of Study, Theory, and Advocacy for Education in Non-Formal Settings. The John D. and Catherine T. MacArthur Foundation Reports on Digital Media and Learning

    ERIC Educational Resources Information Center

    Sefton-Green, Julian

    2013-01-01

    Schools do not define education, and they are not the only institutions in which learning takes place. After-school programs, music lessons, Scouts, summer camps, on-the-job training, and home activities all offer out-of-school educational experiences. In "Learning at Not-School," Julian Sefton-Green explores studies and scholarly…

  5. Interaction of the MUC1 Tumor Antigen and the Adenomatous Polyposis Coli Tumor Suppressor in Human Breast Cancer

    DTIC Science & Technology

    2006-03-01

    molecule. J Mammary Gland Biol Neoplasia 2001, 6(3):339-353. 3. Braun DP, Crist KA, Shaheen F, Staren ED, Andrews S, Parker J: Aromatase inhibitors... resveratrol : NF- kappaB and AP-1 as potential targets. Mutat Res, 555: 65-80, 2004. 18. DeSouza, M. M., Surveyor, G. A., Price, R. E., Julian, J

  6. Talent Searches.

    ERIC Educational Resources Information Center

    Silverman, Linda Kreger, Ed.

    1994-01-01

    Talent searches are discussed in this journal theme issue, with two feature articles and several recurring columns. "Talent Search: A Driving Force in Gifted Education," by Paula Olszewski-Kubilius, defines what a talent search is, how the Talent Search was developed by Dr. Julian Stanley at Johns Hopkins University in Maryland, the…

  7. A National Picture of Talent Search and Talent Search Educational Programs

    ERIC Educational Resources Information Center

    Lee, Seon-Young; Matthews, Michael S.; Olszewski-Kubilius, Paula

    2008-01-01

    This article presents a comprehensive portrait of talent search testing and associated educational programs in the United States, now some 35 years after Dr. Julian Stanley originated the concept. Survey data from the six major talent search centers in the United States were used to examine the scope of talent search educational offerings,…

  8. Papers and Studies in Contrastive Linguistics. Volume Twenty.

    ERIC Educational Resources Information Center

    Fisiak, Jacek, Ed.

    Papers on contrastive linguistics in this volume include: "Contrastive Discourse Analysis in Language Usage" (Juliane House); "Typology and Contrastive Analysis" (Vlasta Strakova); "On the Tenability of the Notion 'Pragmatic Equivalence' in Contrastive Analysis" (Karol Janicki); "On the Relevance of Phonetic,…

  9. The sources of Schwinger's Green's functions

    PubMed Central

    Schweber, Silvan S.

    2005-01-01

    Julian Schwinger's development of his Green's functions methods in quantum field theory is placed in historical context. The relation of Schwinger's quantum action principle to Richard Feynman's path-integral formulation of quantum mechanics is reviewed. The nonperturbative character of Schwinger's approach is stressed as well as the ease with which it can be extended to finite temperature situations. PMID:15930139

  10. Knaves, Knights or Networks: Which Assumption of Lecturer and Manager Motivation Should Underlie Further Education Policy?

    ERIC Educational Resources Information Center

    Boocock, Andrew

    2015-01-01

    Julian Le Grand, a well-known economist, identifies two types of public sector employee: knights (with altruistic motives) and knaves (with self-interested motives). He argues that the quasi-market, predicated on the assumption of knavish behaviour (or agent self-interest), is the most effective way of directing school managers and teachers…

  11. Extended-Range Prediction with Low-Dimensional, Stochastic-Dynamic Models: A Data-driven Approach

    DTIC Science & Technology

    2012-09-30

    COVERED - 4 . TITLE AND SUBTITLE Extended-Range Prediction with Low-Dimensional, Stochastic-Dynamic Models: A Data-driven Approach 5a. CONTRACT...mwheeler/maproom/RMM/ 4 • As the Madden-Julian oscillation (MJO) moves eastward from the Indian to the Pacific ocean, it typically accelerates, becomes

  12. Development and Evaluation of Computer-Based Versions of the Decision Board for Early Breast Cancer

    DTIC Science & Technology

    2001-10-01

    Whelan Members Mark Levine Amiram Gafni Jim Julian Ken Sanders Susan Reid Mary Ann O’Brien Shelley Chambers Adjudication Committee Adjudication...decision making body for the study. Steering Committee Tim Whelan SCCR Unit, Members Hamilton Regional Cancer Centre, Hamilton, Ontario Mark Levine Hamilton

  13. 78 FR 50412 - California State Nonroad Engine Pollution Control Standards; Amendments to Spark Ignition Marine...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ... party notifies EPA by September 6, 2013, of their request to present oral testimony. Parties wishing to present oral testimony at the public hearing must provide written notice by September 6, 2013 to Julian... measurement, and assigned deterioration factor options for high performance engines; optional...

  14. Anamorphic Art

    ERIC Educational Resources Information Center

    Foster, Colin

    2006-01-01

    During the 17th century, Baroque decoration used anamorphism to combine actual architectural elements with illusionistic painting. When viewed from a particular point in space, the architecture blends with painting to form a combined image. In this article, Julian Beever, a leading anamorphic pavement artist, explains to the author the principles…

  15. The Effects of Speech and Language Therapy Intervention on Children with Pragmatic Language Impairments in Mainstream School

    ERIC Educational Resources Information Center

    Adams, Catherine; Lloyd, Julian

    2007-01-01

    In this article, Catherine Adams, clinical senior lecturer in speech and language therapy at the University of Manchester, and Julian Lloyd, senior lecturer in psychology at Newman College, Birmingham, describe the implementation and effects of an intensive programme of speech and language therapy for children who have pragmatic language…

  16. From VE Day to the Fulda Gap and New Europe: The Policy of U.S. Forces in Germany -- Implications for Twenty-First Century Conflict

    DTIC Science & Technology

    2008-03-01

    Neoliberalism : The Contemporary Debate. New York: Columbia University Press, 1993. Barnes, Julian E. "Military Makeover; with a Painful Plan to...the Marshall Plan ..................33 3. Opening the Door to the West?.........................................................36 D. CONCLUSION...Stanford University Press, 1968), xiii. 4 Richmond M. Lloyd, Strategy and Force Planning , eds. Strategy and Force Planning Faculty, Naval war College

  17. Education Across Cultures: Domestic and International Perspectives. Proceedings of the Annual Colloquium (7th, Pittsburgh, Pennsylvania, March 28, 1981).

    ERIC Educational Resources Information Center

    Pittsburgh Univ., PA. Council of Graduate Students in Education.

    The Council for Graduate Students in Education's Seventh Annual Colloquium was held on March 28, 1981, on the theme "Education Across Cultures: Domestic and International Perspectives." Papers presented include: "Symbolic Strategies in the Organization of Ethnic Study Programs" (Julian E. Abuso); "The Prospective…

  18. Embodied Spirituality

    ERIC Educational Resources Information Center

    Trousdale, Ann

    2013-01-01

    This article explores the concept of embodied spirituality from early Celtic traditions through the British medieval mystic Julian of Norwich to the present day. A "high theology" of the body in early Christianity and early Christian understandings of the relation among body, soul and spirit gave way to the influences of Greek thought with its…

  19. IFLA General Conference, 1987. Division of Special Libraries. Art Libraries Section. Round Table on Audiovisual Media. Administrative Libraries Section. Papers.

    ERIC Educational Resources Information Center

    International Federation of Library Associations, The Hague (Netherlands).

    Seven of the 13 papers in this collection discuss art libraries; the remaining six papers are concerned with administrative and special libraries. The papers from the Section of Art Libraries appear first in this list: (1) "SCOAD (Standing Committee on Art Documentation): Its Inception and Aims" (Julian Gardner, United Kingdom); (2)…

  20. The Talent Search Model of Gifted Identification

    ERIC Educational Resources Information Center

    Assouline, Susan G.; Lupkowski-Shoplik, Ann

    2012-01-01

    The Talent Search model, founded at Johns Hopkins University by Dr. Julian C. Stanley, is fundamentally an above-level testing program. This simplistic description belies the enduring impact that the Talent Search model has had on the lives of hundreds of thousands of gifted students as well as their parents and teachers. In this article, we…

  1. 2000 African American History Month Celebration Luncheon

    NASA Technical Reports Server (NTRS)

    2000-01-01

    In the Early Space Exploration Conference Center at the KSC Visitor Complex, Dr. Julian M. Earls (left), deputy director for Operations, Glenn Research Center, receives a plaque from astronaut Joan Higginbotham (right) during the 2000 African American History Month Celebration Luncheon. Dr. Earls was guest speaker at the luncheon.

  2. A not-so-new eugenics. Harris and Savulescu on human enhancement.

    PubMed

    Sparrow, Robert

    2011-01-01

    John Harris and Julian Savulescu, leading figures in the "new' eugenics, argue that parents are morally obligated to use genetic and other technologies to enhance their children. But the argument they give leads to conclusions even more radical than they acknowledge. Ultimately, the world it would lead to is not all that different from that championed by eugenicists one hundred years ago.

  3. Impact of Aircraft Emissions on Air Quality in the Vicinity of Airports. Volume 4. Nitrogen Dioxide and Hydrocarbons.

    DTIC Science & Technology

    1984-04-01

    Measurement History ........... 3 2.1.2 System Characterization..* ......... o ...................... 14 2.2 Data Analysis and Results...2.2 Field-Program Measurement History .................................. 8 4 2.3 Julian Date/Calendar Date Correspondence...aircraft on air quality have been the subject of a variety of research programs Involvitng both field- measurement programs and computer model

  4. Investigating GAIM-GM’s Capability to Sense Ionospheric Irregularities via Walker Satellite Constellations

    DTIC Science & Technology

    2015-03-26

    interplanetary magnetic field , and the solar wind. These open magnetic field lines allow energetic particles to enter the ionosphere, and can cause large...GAIM for these simulations. Column # Property Descriptor 1 Year 2 Day (Julian Day) 3 Hour 4 Minute 5 Second 6 Satellite Number 7 Satellite Number 8 ... 8 3 . Example of IFM TEC Output

  5. Hunting and Outdoor Education.

    ERIC Educational Resources Information Center

    Matthews, Bruce E.

    1991-01-01

    This article addresses the controversy over including hunting as a part of outdoor education. Historically, figures such as Julian Smith, of the Outdoor Education Project of the 1950's, advocated hunting as a critical element of educating children and youth about care and protection of natural resources. Henry David Thoreau saw hunting experiences…

  6. Education for the Gifted: Patterns for the Future. Proceedings, Annual Summer Conference (4th, Eugene, Oregon, July 25-27, 1983).

    ERIC Educational Resources Information Center

    Oregon Univ., Eugene. Coll. of Education.

    This collection consists of 11 conference papers on issues pertaining to education of talented and gifted children; 6 are from "general interest" sessions and 5 are from "special interest" sessions. The general interest papers are primarily theoretical in focus. Titles include: Julian C. Stanley's "Finding Intellectually…

  7. Estimating C-17 Aircrew Seasoning Given a Prediction of Flying Austerity

    DTIC Science & Technology

    2014-06-01

    mission classification, operating organization, operating squadron, actual departure time (in Zulu ), actual arrival time (in Zulu ), and flight time in...zero. The horizontal axis is the time axis and is in Julian day units starting with January 1, 2013 and terminates at 2359 Zulu on June 30th 2013

  8. The Birch Street Irregulars: mysteries found and resolved in the AAVSO data archives

    NASA Astrophysics Data System (ADS)

    Beck, Sara J.; Saladyga, Michael; Mattei, Janet A.

    As they evaluate AAVSO data, AAVSO technical staff members run across several kinds of errors. This paper takes a humorous and Sherlock Holmes-style look at some of the most common kinds of errors detected, from observers recording the wrong Julian Date, misidentifying stars, transposing entries on the observer form, to garden-variety data entry errors.

  9. 75 FR 66680 - Defense Federal Acquisition Regulation Supplement (DFARS); Continuation of Essential Contractor...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-29

    ... was concerned with how this term would be interpreted in non-military offices that did not have a... order to use more precise terminology. Redesignated DFARS 252.237-7023(e) adds ``military'' personnel to... (DARS), Attn: Mr. Julian Thrash, OUSD(AT&L)DPAP(DARS), Room 3B855, 3060 Defense Pentagon, Washington,...

  10. 76 FR 2799 - Amendment of Jet Route J-93; CA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-18

    ... intersection on the United States/Mexican border. The FAA is realigning the jet route due to the relocation of... ASUTA intersection along the United States/Mexican Border, realigning the route with the revised.... * * * * * J-93 From the INT of the United States/Mexican Border and the Julian, CA, 122 radial via...

  11. Knaves or Knights, Pawns or Queens?: An Evaluation of Australian Higher Education Reform Policy

    ERIC Educational Resources Information Center

    Dollery, Brian; Murray, David; Crase, Lin

    2006-01-01

    Purpose: To invoke Julian Le Grand's conceptual model of the interaction between human motivation and policy formulation in order to explain how motivational endogeneity in the university environment has distorted policy outcomes in the Australian higher education reform program. Design/methodology/approach: Le Grand contends that changes in the…

  12. Action Research. Case Studies in TESOL Practice Series.

    ERIC Educational Resources Information Center

    Edge, Julian, Ed.

    Chapter titles in this book include the following: "Attitude and Access: Building a New Teaching/Learning Community in TESOL" (Julian Edge); "Here It Is, Rough Though It May Be: Basic Computer for ESL" (Alison Perkins); "An 'It's Not Action Research Yet, but I'm Getting There' Approach to Teaching Writing" (Neil Cowie); "Early Reflections:…

  13. Black Achievers in Science, Teachers Guide.

    ERIC Educational Resources Information Center

    Museum of Science and Industry, Chicago, IL.

    In this guide, 16 historical and contemporary black scientists and engineers are highlighted as role models. Four scientists are represented in each of four technical fields: life sciences (Ernest E. Just; Harvey M. Pickrum; George W. Carver; Patricia S. Cowings); physical science (George R. Carruthers; Percy L. Julian; Walter E. Massey; Warren M.…

  14. Drawing entitled "Planting Plan Pine Hills, Gd. Sta. U.S. Department ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Drawing entitled "Planting Plan Pine Hills, Gd. Sta. U.S. Department of Agriculture, Forest Service, Region 5. L. Glenn Hall, landscape engineer. 11-5-35. - Pine Hills Station, Barracks, West Side of Boulder Creek Road at Engineers Road, Julian, San Diego County, CA

  15. CARCINOGENIC EFFECTS OF LOW DOSES OF IONIZING RADIATION

    EPA Science Inventory

    Carcinogenic Effects of Low Doses of Ionizing Radiation

    R Julian Preston, Environmental Carcinogenesis Division, NHEERL, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711

    The form of the dose-response curve for radiation-induced cancers, particu...

  16. Non-Linear Operations: A New Doctrine for a New Era

    DTIC Science & Technology

    1994-04-20

    54. 89. Julian Corbett, Some Principles of Maritime Strategy, (Annapolis, MD: Naval Institute Press, 1988), p. 321. 90. John Morgan Dederer , Making...Some Principles of Maritime Strategy. Annapolis, MD: Naval Institute Press, 1988. Dederer , John Morgan. Making Bricks Without Straw: Nathanail

  17. D. H. Lawrence: A Collection of Critical Essays. Twentieth Century Views Series.

    ERIC Educational Resources Information Center

    Spilka, Mark, Ed.

    One of a series of works aimed at presenting contemporary critical opinion on major authors, this collection includes essays by Dorothy Van Ghent, Marvin Mudrick, Mark Schorer, Harry T. Moore, Julian Moynahan, Monroe Engel, Graham Hough, Mark Spilka, W. D. Snodgrass, V. de S. Pinto, Arthur E. Waterman, Richard Foster, and Raymond Williams--all…

  18. 78 FR 32676 - Changes in Flood Hazard Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-31

    ... INFORMATION CONTACT: Luis Rodriguez, Chief, Engineering Management Branch, Federal Insurance and Mitigation... City of San The Honorable Municipal Plaza, http://www.rampp-team.com/ July 22, 2013 480045 Antonio (12-06- Julian Castro, 114 Commerce lomrs.htm. 2419P). Mayor, City of Street, 7th San Antonio, Floor,...

  19. 78 FR 21141 - Changes in Flood Hazard Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-09

    ... INFORMATION CONTACT: Luis Rodriguez, Chief, Engineering Management Branch, Federal Insurance and Mitigation..., Manheim, PA 17545. Texas: Bexar (FEMA Docket No.: B-1278) City of San Antonio The Honorable Julian... Antonio, 100 7th Floor, San Military Plaza, San Antonio, TX 78205. Antonio, TX 78205. Bexar (FEMA...

  20. 78 FR 14565 - Changes in Flood Hazard Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-06

    ... INFORMATION CONTACT: Luis Rodriguez, Chief, Engineering Management Branch, Federal Insurance and Mitigation... Antonio (12-06- Julian Castro, 114 West Commerce team.com/lomrs.htm. 4032P). Mayor, City of Street, 7th San Antonio, P.O. Floor, San Box 839966, San Antonio, TX 78205. Antonio, TX 78283....

  1. VizieR Online Data Catalog: BVR polarimetry of HD 48099 (Berdyugin+, 2016)

    NASA Astrophysics Data System (ADS)

    Berdyugin, A.; Piirola, V.; Sadegi, S.; Tsygankov, S.; Sakanoi, T.; Kagitani, M.; Yoneda, M.; Okano, S.; Poutanen, J.

    2016-05-01

    Normalized Stokes parameters of linear polarization (q, u) measured in the B, V and R pass-bands are presented with their errors. For each measurement the heliocentric Julian date, phase of the orbital period at the time of the observation and the name of the telescope are given. (1 data file).

  2. VizieR Online Data Catalog: CCD photometry of CY Aqr 2012-2015 (Wiedemair+, 2016)

    NASA Astrophysics Data System (ADS)

    Wiedemair, C.; Sterken, C.; Eenmae, T.; Tuvikene, T.; Niederkofler, D.; Franzinelli, P.; Durnwalder, J.; Nardi, R.; Franzinelli, T.; Morawetz, I.; Nugroho, S. K.; Damini Hofer, J.; Seeber, J.

    2016-10-01

    All photometric data reported in this paper were obtained through CCD imaging obtained over more than 50 partial nights comprising a total of more than 20000 useful CCD frames. Table 1 gives the journal of observations. Heliocentric Julian Date, differential magnitudes ys,bs,vs,us in the standard system, and instrumental differential magnitudes yi,bi,vi,ui. (4 data files).

  3. VizieR Online Data Catalog: Velocity curves of HD 40307 (Mayor+, 2009)

    NASA Astrophysics Data System (ADS)

    Mayor, M.; Udry, S.; Lovis, C.; Pepe, F.; Queloz, D.; Benz, W.; Bertaux, J.-L.; Bouchy, F.; Mordasini, C.; Segransan, D.

    2009-04-01

    HARPS high-precision radial velocities of the star HD 40307. The table contains 3 columns: barycentric Julian date , barycentric radial velocity (km/s) and uncertainty on radial velocity (km/s). The table gives the 129 measurements from which the final orbital parameters are obtained in the paper. (1 data file).

  4. Eventos de Agosto (August Events).

    ERIC Educational Resources Information Center

    Toro, Leonor; Pla, Myrna

    Written in Spanish, this booklet contains brief information on seven August events celebrated by Puerto Ricans: Herbert Hoover's birthdate (August 10); Acta del Seguro Social (Social Security Act, August 14); Julian E. Blanco (August 14), Enmienda 19 Sufragia de la Mujer (Amendment 19, Women's Suffrage, August 26); Benjamin Harrison (August 20);…

  5. "Joint Workshop on High Confidence Medical Devices, Software, and Systems (HCMDSS) and Medical Device Plug-and-Play (MD PnP) Interoperability"

    DTIC Science & Technology

    2008-05-01

    Waters University of New Hampshire Sandy Weininger US FDA James Welch Masimo Susan Whitehead CIMIT David Whitlinger Intel / Continua Health Alliance...Zimmerman Karl Storz Endoscopy America, Inc. Bryce Hayashida LiveData, Inc. Jeff Robbins Jeff Scott Masimo James Welch Massachusetts General Hospital Julian

  6. "Rocky Mountain Talent Search" at the University of Denver

    ERIC Educational Resources Information Center

    Rigby, Kristin

    2005-01-01

    The "Rocky Mountain Talent Search" (RMTS) at the University of Denver was developed based on the talent search model developed by Dr Julian Stanley of Johns Hopkins University. This article summarizes the establishment of RMTS and outlines its contemporary programs. Guided by the philosophy that gifted students have unique needs, require academic…

  7. 78 FR 27238 - Ocean Transportation Intermediary License Applicants

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-09

    ...), 121 New York Avenue, Trenton, NJ 08638, Officers: Cornelius A. Dale, Vice President (QI), Charles H..., Baldwin Park, CA 91706, Officers: Alexander C. Sahagun, President (QI), Julian L. de Vera, Chief Finance Officer, Application Type: New OFF License. Jolaco International Procurement Inc. (NVO), 20180 Park...

  8. Whatever Happened to School Camping? An Occasional Paper.

    ERIC Educational Resources Information Center

    Donaldson, George W.; Donaldson, Louise E.

    1982-01-01

    School camping began with three movements in American society: children's camping, which has been traced back as far as 1823; the Nature Study Movement, which is thought to have begun as early as 1839; and the holistic "new education." In 1940, L. B. Sharp opened National Camp in New Jersey and Julian W. Smith initiated the Clear Lake…

  9. Il Calcolo della Pasqua: Vittorio d'Aquitania Dionigi il Piccolo e Abbone di Fleury

    NASA Astrophysics Data System (ADS)

    Sigismondi, Costantino

    2014-05-01

    The Easter calculus is a story of ephemerides approximations, with appropriate algorithms, as well as the reformations of the calendar dealed with tropical year's approximations. The calculus made by Victorius of Aquitania, Dyonisius Exiguus and Abbo of Fleury, based on 532 years Easter period in Julian calendar are discussed, including the corrections ad hoc of the algorithms, like the saltus lunae.

  10. Drawing entitled "Sketch of proposed site for Pine Hills Patrol ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Drawing entitled "Sketch of proposed site for Pine Hills Patrol Station, Cleveland National Forest, San Diego County, California. Surveyed by Norman McClean, U.S.F.S., January, 1934. - Pine Hills Station, Barracks, West Side of Boulder Creek Road at Engineers Road, Julian, San Diego County, CA

  11. 40 CFR 81.166 - South Central Coast Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...)) geographically located within the outermost boundaries of the area so delimited): In the State of California: San Luis Obispo County. Santa Barbara County—that portion of Santa Barbara County which lies north of a... north along Jalama Creek to a point of intersection with the west boundary of the San Julian Land...

  12. 40 CFR 81.166 - South Central Coast Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...)) geographically located within the outermost boundaries of the area so delimited): In the State of California: San Luis Obispo County. Santa Barbara County—that portion of Santa Barbara County which lies north of a... north along Jalama Creek to a point of intersection with the west boundary of the San Julian Land...

  13. Young Workers: Varieties of Experience.

    ERIC Educational Resources Information Center

    Barling, Julian, Ed.; Kelloway, E. Kevin, Ed.

    This book contains nine papers devoted to the psychological experience of youth employment and its role in shaping future employment experiences and expectations. "Introduction" (Julian Barling, E. Kevin Kelloway) emphasizes the diversity of young people as a group and the diversity of individual youth's employment experience. "The…

  14. Management process invaded Ames as the Center shifted from NACA to NASA oversight. Ames constructed

    NASA Technical Reports Server (NTRS)

    1968-01-01

    Management process invaded Ames as the Center shifted from NACA to NASA oversight. Ames constructed a review room in its headquarters building where, in the graphical style that prevailed in the 1960's, Ames leadership could review progress against schedule, budget and performance measures. Shown, in October 1965 is Merrill Mead chief of Ames' program and resources office. (for H Julian Allen Retirement album)

  15. Everything but the Kitchen Sink: An Exploration of Significant Events.

    ERIC Educational Resources Information Center

    Turner, Dianne

    2000-01-01

    Describes an art activity in which elementary students create collages similar to those of Julian Schnabel, learning to appreciate his work's meaning. Students select a symbol to represent an event or experience in their lives. Collages are created with acrylic paint and broken plates. (CMK)

  16. Profiles of Influence in Gifted Education

    ERIC Educational Resources Information Center

    Karnes, Frances A., Ed.; Nugent, Stephanie A., Ed.

    2004-01-01

    This book, written to coincide with the 50th Anniversary the National Association for Gifted Children, recognizes many of the most prominent contributors to the field of gifted education over the past century. Those included are pioneers such as Lewis M. Terman and Leta S. Hollingworth, Julian Stanley, and Paul Torrance, through to more…

  17. A History of the Los Angeles District, U.S. Army Corps of Engineers, 1898-1965

    DTIC Science & Technology

    1975-01-01

    Arroyo drainage area, and along Julian Wash. About 40 miles southeast of Phoenix, the District completed in November 1960 the Whitlow Ranch Reservoir...Luis, California. By Porter-Urquhart- McCreary -O’Brien, Consulting Engineers, 1958. 370 Review Report for Navigation, Port San Luis (San Luis Obispo

  18. Interannual Variability of the Upper Ocean in the Southeast Pacific Stratus Cloud Region

    DTIC Science & Technology

    2009-10-01

    Ocean. J. Phys. Oceanogr., 35, 708–728. ——, T. Shinoda, L.-L. Fu, and J. P. McCreary , 2006: Impact of atmospheric intraseasonal oscillations on the...Climate, 11, 2668–2685. ——, and ——, 2001: Upper-ocean heat budget in response to the Madden– Julian oscillation in the western equatorial Pacific. J

  19. Human Performance: Psychological and Physiological Sex Differences (A Selected Bibliography)

    DTIC Science & Technology

    1980-02-01

    Norwegian I men and women. Journal of Applied Physiology, 1965, _20, 425-431. 43. Heyward, V., & McCreary , L. Comparison of the relative endurance...inner space: A data-based reevaluatlon. American Journal of Qrthopsychiatry, 1979, 4_9, 100-108. 8. Carrigan, W. C., & Julian , J. W„ Sex and birth

  20. Social Impacts of McClellan-Kerr Navigation System: A Study of Public Sector Response to Water Resource Development,

    DTIC Science & Technology

    1981-12-01

    included money for Devil’s Jump, a $151,000,000 reservoir in McCreary County, Kentucky, and Bruces Eddy, a $186,000,000 dam-and-reservoir program for the...employmen, of the public relations firm. An article by Julian Bond on the el. -Lion campaign included a picture of a poster entitled "Remember Little

  1. Assessment of the DoD Embedded Media Program

    DTIC Science & Technology

    2004-09-01

    COL Rick Machamer DoD LNO to Foreign Press Center OCJCS (2) Capt. T. McCreary Special Assistant for Public Affairs CDR Chris Dour PAO...and CPIC-Kuwait (10) COL Rick Thomas PAO, CFLCC, ARCENT, and 3rd Army LTC Greg Julian Deputy PAO, CFLCC, ARCENT, and 3rd Army LTC

  2. USAWC (US Army War College) Military Studies Program Paper. Factors Affecting Success in Coalition Command

    DTIC Science & Technology

    1986-03-31

    claims that HcCreery said that he was "embarassed when a young American (General) gives us orders that we don’t like." Clark let McCreary "getit off his...the Julian Alps, the Ljubljana Gap and into the mid-Danube and Vienna.8 Clark’s alliance with the British on this strategy had several results

  3. Reflecting Visions. New Perspectives on Adult Education for Indigenous Peoples.

    ERIC Educational Resources Information Center

    King, Linda, Ed.

    This book contains 14 papers: "Indigenous Peoples and Adult Education: A Growing Challenge" (Rodolfo Stavenhagen); "Indigenous Peoples: Progress in the International Recognition of Human Rights and the Role of Education" (Julian Burger); "Adult Learning in the Context of Indigenous Societies" (Linda King); "Linguistic Rights and the Role of…

  4. Maritime Trade Defense: Establishing the Joint Force Maritime Trade Component Commander

    DTIC Science & Technology

    2012-05-04

    maritime trade warfare itself and convoy tactics. British maritime trade defense at the start of WWI centered on Julian Corbett’s theory that...merchant marine. As a part of the increased militarization of China and the traditional aggressiveness of North Korea, military boundary zones in the

  5. 75 FR 35684 - Defense Federal Acquisition Regulation Supplement; Ownership or Control by a Foreign Government...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-23

    ... Defense Acquisition Regulations System 48 CFR Parts 209 and 252 Defense Federal Acquisition Regulation... Regulations System, Department of Defense (DoD). ACTION: Interim rule with request for comments. SUMMARY: DoD... of the message. Fax: 703-602-0350. Mail: Defense Acquisition Regulations System, Attn: Mr. Julian...

  6. A Note on the Application of the Extended Bernoulli Equation

    DTIC Science & Technology

    1999-02-01

    SANTANDER SPAIN DEPARTMENTO DE QUIMICA FISICA FACULTAD DE CIENCIAS QUIMICAS UNIVERSIDAD COMPLUTENSE DE MADRID V G BAONZA M TARAVTLLO M CACERAS...UNIVERSIDAD DE OVIEDO FACULTAD DE QUIMICA DEPARTMENTO DE QUIMICA FISICA Y ANALITICA E FRANCISCO AVENIDA JULIAN CLAVERIA S/N 33006 - OVIEDO SPAIN

  7. Constraints on the Grueneisen Theory

    DTIC Science & Technology

    2007-02-01

    TOMSK 634024 RUSSIA 5 DEPARTMENTO DE QUIMICA FISICA I FACULTAD DE CIENCIAS QUIMICAS UNIVERSIDAD COMPLUTENSE DE MADRID V G BAONZA...OVIEDO FACULTAD DE QUIMICA DEPARTMENTO DE QUIMICA FISICA Y ANALITICA E FRANCISCO AVENIDA JULIAN CLAVERIA S/N 33006 - OVIEDO

  8. CSA/ASC Press Briefing

    NASA Technical Reports Server (NTRS)

    2005-01-01

    Nicole Gignac, Senior Communications Advisor Canadian Space Agency (CSA), introduces the panel for this CSA/ASC press briefing. The panel consist of: Dr. Steve Maclean, CSA astronaut; Dr. Paul Cooper, Deputy General Manager, MacDonald, Dettwiler and Associates Ltd. (MDA); and Dr. Iain Christie, Director of Research and Development from NEPTEC. Maclean will fly on the STS-115 Mission in February of 2006. He presents pictures and talks about the crewmembers of the Space Shuttle Columbia and Space Shuttle Discovery. Maclean also discusses entry risks as it pertains to the leading edge wing of Discovery. Paul Cooper explains and shows a video presentation of Canadarm robotics. The briefing ends with Dr Christie explaining the sensitive three dimensional inspections are performed in space that looks for cracks in the leading edge wing of the Space Shuttle Discovery.

  9. Student experimenter stands near middeck lockers in JSC Bldg 9A mockup

    NASA Technical Reports Server (NTRS)

    1991-01-01

    Student experimenter Constantine Costes, STS-42 Commander Ronald J. Grabe, STS-42 Mission Specialist (MS) William F. Readdy, and Integration Engineer Neal Christie discuss Coates' student experiment 83-02 (SE 83-02) entitled 'Zero-G Capillary Rise of Liquid through Granular Porous Media' in JSC Mockup and Integration Laboratory Bldg 9A Full Fuselage Trainer (FFT). On FFT middeck, Costes stands behind Readdy (kneeling) as Christie demonstrates experiment setup and Grabe looks on (47326). The team also examines experiment components at middeck stowage locker (47323) and at FFT open side hatch (47324, 47325). The experiment is designed to investigate the capillary and forced flow characteristics of blue-tinted water in three glass tubes with three sizes of glass beads. SE 83-02 is scheduled to be flown on STS-42 aboard Discovery, Orbiter Vehicle (OV) 103.

  10. National Computer Security Conference (16th) held at Baltimore Convention Center, Baltimore, Maryland on September 20-23, 1993. Proceedings

    DTIC Science & Technology

    1993-09-23

    focus this paper and sharpen its message. In particular we acknowledge Jeffrey Edelheit, Lester Fraim, Richard Graubart, Steve Lipner, Carol Oakes...Electronic Crime Prevention Robert Lau, Chairman National Security Agency Speakers Special Agent Jim Christy, AFS/OSI Special Agent Jack Lewis ...Computer Crime programs in the Department of Defense. Special Agent Jack Lewis will discuss programs in the Secret Service. Special Agent Mark Pollitt

  11. Hydrogen Fuel Cell: Research Progress and Near-Term Opportunities

    DTIC Science & Technology

    2009-04-27

    deployment) from $5.00 to $3.00 per gallon gasoline equivalent ( gge )* – a 40% reduction.[2] Christy Cooper US Department of Energy Hydrogen Program...renewable-based technologies (assuming widespread deployment) from $5.15 to $4.80 per gge (e.g., electroly- sis and distributed reforming† of bio...to gaso- line. The amount of fuel with the energy content of one gallon of gaso- line is referred to as a gallon gasoline equivalent, or gge

  12. South Texas Veterans Health Care System Mobile Health Clinic: Business Case Analysis

    DTIC Science & Technology

    2009-06-11

    has an active ambulatory care program with VA-staffed satellite outpatient clinics and contract Community Based Clinics located throughout San...geriatric evaluation and management, and palliative care to an estimated 16,000 veterans residing in the "Texas Hill Country." The Valley/Coastal...Bend Division (V/CBD) includes primary care outpatient clinics located in Harlingen, McAllen, Corpus Christi, and Laredo. The new Harlingen facility

  13. Gulf Coast Water Port Facilities Study. Appendix A. Western Gulf Hydrobiological Zones.

    DTIC Science & Technology

    1973-04-01

    and commercial finfish of the Corpus Christi Bay System are the redfish. Sciaenops ocellatus " drum, Pogonias cromis; trout, Cnoscion nebulosus; sheeps...a nursery for Gulf fishes. The three most important species to the bay’s commercial fishery are the Redfish ( Sciaenops ocellata). Black Drum...flounder (Parafichihys letho- stigma) and redfish ( Sciaenops ocellata). The dominant species in the forage samples tend to be Anchoa mitchelli (anchovy

  14. Experimental and Seismological Constraints on the Rheology, Evolution, and Alteration of the Lithosphere at Oceanic Spreading Centers

    DTIC Science & Technology

    2007-02-01

    granite [Dell’Angelo and Tullis, 1988], diabase [Fredrich and Evans, 1990], and peridotite [Bussod and Christie, 1991]. In addition to preventing the... Diabase , Eos Trans. Fall Meeting Supp., 71, 1750. Fujii, T., and I. Kushiro (1977), Density, viscosity and compressibility of basaltic liquid at high...Tucholke and Lin, 1994), and gabbro and diabase outcrops have been observed on the eastern rift valley wall (Reves-Sohn et al., 2004; Zonenshain et al

  15. Preclinical Mouse Models of Neurofibromatosis

    DTIC Science & Technology

    2007-10-01

    in NF1 and NF2 Patients. Persons with NF1 are predisposed to benign neurofibromas, optic nerve gliomas, and to specific malignant neoplasms ...anatomic location. The malignant neoplasms seen in NF1 patients include astrocytoma, malignant peripheral nerve sheath tumor (MPNST), pheochromocytoma, and...hematopoietic cells results in a progressive myeloproliferative disorder. Blood 2004; 103: 4243-4250. Reilly KM, Tuskan RG, Christy E, Loisel DA

  16. Privatization of Military Family Housing

    DTIC Science & Technology

    2007-11-02

    Rev. 2-89) (EG) Proscribed by ANSI S IU . 239,1 PRIVATIZATION OF MILITARY FAMILY HOUSING MAJOR PATRICK W. MOUDY* * Major Patrick W. Moudy, United...amendments for Development of Private Sector Housing, Corpus Christi, Texas.29 Landmark Residential, LLC (Landmark) was the successful offeror for the...office, the JAG office, the Civil Engineering office, the Comptroller office, the environmental experts, and the housing office, as well as the command

  17. Towards Effective Emerging Infectious Diseases Surveillance: Evidence from Kenya, Peru, Thailand, and the U.S.-Mexico Border

    DTIC Science & Technology

    2012-09-01

    Vera,   Alicia ,  Anderson,  Christy  M,   Lozada,  Remedios,  Chait,  Lwbba,  Schooley,  Robert  T,  Zhang,  Xing-­‐quan...Valle,  Enrique  Navarro,  Rodriguez,  Alfonso,   Hernandez ,   Gerardo  Alvarez,  Rosales,  Cecilia,  Ortiz,  Javier

  18. Field Testing New Plot Designs and Methods for Determining Hydrophytic Vegetation during Wetland Delineations in the United States

    DTIC Science & Technology

    2014-03-01

    Engineers. Walter Ochs provided the ini- tial idea for evaluating the 80% approach based on differences in the standard deviation. Christy Everett and Jim...Godswire provided assistance in selecting sites to collect the CRREL data. Bruce Allen, Lindsey Lefevbre, Walter Ochs , Corinna Photos, Bill Sipple...vegetation determination (USACE 2010a). The 80.0% value was developed in 2005 (R. Lichvar and W. Ochs , unpublished data) by analyzing a national set of

  19. Hurricane Surge Stage-Frequency Analysis for Dade County, Florida.

    DTIC Science & Technology

    1980-08-01

    typically taken out to the 300- or 600-ft contour. Offshore from Biscayne Bay , these depths are found only a few miles seaward. The constriction in the cur...S. Army Engineer District, Jacksonville, CE. 1963. "Survey Report on Hurricane Protective Measures for Biscayne Bay , Fla." (Revised), Jacksonville...and Storm Surge Response in the Corpus Christi-Aransas Bay System" prepared for the U. S. Army Coastal Engineering Research Center, CE, and the U. S

  20. Land-surface subsidence in the Texas coastal region

    USGS Publications Warehouse

    Ratzlaff, Karl W.

    1980-01-01

    In southeastern Jackson County and northwestern Matagorda County, the land surface subsided more than 1.5 feet (0.46 meter) during 1943-73 as a result of ground-water withdrawals. Withdrawals of oil, gas, and associated ground water caused more than 5 feet (1.5 meters) of subsidence during 1942-75 in the western part of Corpus Christi in Nueces County.