Comparisons between HIRDLS and ACE-FTS Cora Randall & Lynn Harvey and the HIRDLS team Aura Science time ACE-FTS data. #12;Atmospheric Chemistry Experiment Fourier Transform Spectrometer Launched.) #12;ACE-FTS Validation Status (v1.0) Ozone �10%, Solar Occultation, 15-40 km NO2 0-10% lower than HALOE

One of the most abundant chlorine-containing molecules in the atmosphere is methyl chloride; a species whose sources are almost entirely natural. The most common sources of methyl chloride are tropical plants, senescent or dead leaves and biomass burning. As the impacts of the Montreal Protocol and its subsequent amendments are becoming apparent in the reduction of chlorofluorocarbons in the ...

Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) solar occultation measurements have been used to create volume mixing ratio (VMR) profiles of H2O, CH4, and N2O inside and outside the 2004 Arctic vortex. Using derived meteorological quantities such as potential vorticity, we have classified 450 ...

A new retrieval method has been developed to derive water vapour number density profiles from solar occultation measurements of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY). This method is intentionally kept simple and based on a combination of an onion peeling approach with a modified DOAS (Differential Optical ...

A new retrieval method has been developed to derive water vapour number density profiles from solar occultation measurements of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY). This method is intentionally kept simple and based on a combination of an onion peeling approach with a modified DOAS (Differential Optical ...

The Atmospheric Chemistry Experiment - Fourier Transform Spectrometer (ACE-FTS) aboard the Canadian satellite SCISAT was designed to measure the composition of the upper troposphere, stratosphere, and mesosphere. It uses the solar occultation technique and has produced high precision observations since February 2004. ...

Stratospheric methane (CH4) profiles have been derived from solar occultation measurements of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) on ENVISAT with an updated version of the Onion Peeling DOAS (ONPD) method. The SCIAMACHY solar occultation measurements cover the ...

Correlations between long-lived species provide a useful tool for investigating both dynamical and chemical processes in the atmosphere. Global tracer-tracer correlations between total odd nitrogen (NOy) and N2O, and between NOy and O3 have been studied using measurements made by the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) on the Canadian ...

The Atmospheric Chemistry Experiment has been in orbit since its launch on 12 August 2003. ACE is a Canadian-led satellite mission, also known as SCISAT, which carries two instruments, the Fourier Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO). Both ...

The Atmospheric Chemistry Experiment-Fourier Transform (ACE-FTS) aboard the Canadian satellite SCISAT (launched in August 2003) was designed to investigate the composition of the upper troposphere, stratosphere, and mesosphere. ACE-FTS utilizes solar occultation to measure temperature and pressure as well as ...

Major limitations of our present knowledge of the global distribution of CO2 in the atmosphere are the uncertainty in atmospheric transport and the sparseness of in situ concentration measurements. Limb viewing spaceborne sounders such as the Atmospheric Chemistry Experiment Fourier transform spectrometer (ACE-FTS) offer a vertical resolution of a few kilometres for profiles, ...

The Atmospheric Chemistry Experiment-Fourier Transform Spectrometer (ACE-FTS) aboard the Canadian satellite SCISAT (launched in August 2003) was designed to investigate the composition of the upper troposphere, stratosphere, and mesosphere. ACE-FTS utilises solar occultation to measure temperature and pressure as ...

Sharp gradients in concentrations near sunrise/sunset conditions can lead to asymmetric distribution of species along the line of sight (LOS) in a solar occultation experiment. Model derived correction factors have been used for stratospheric NO and NO2 retrievals in HALOE and ATMOS experiments. Mesospheric ozone also exhibits such inhomogeneity along ...

This paper presents extensive validation analyses of ozone observations from the Atmospheric Chemistry Experiment (ACE) satellite instruments: the ACE Fourier Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO) instrument. The ACE satellite instruments operate ...

Hydrogen chloride (HCl) and hydrogen fluoride (HF) are respectively the main chlorine and fluorine reservoirs in the Earth's stratosphere. Their buildup resulted from the intensive use of man-made halogenated source gases, in particular CFC-11 (CCl3F) and CFC-12 (CCl2F2), during the second half of the 20th century. It is important to continue monitoring the evolution of these source gases and ...

Hydrogen chloride (HCl) and hydrogen fluoride (HF) are respectively the main chlorine and fluorine reservoirs in the Earth's stratosphere. Their buildup resulted from the intensive use of man-made halogenated source gases, in particular CFC-11 (CCl3F) and CFC-12 (CCl2F2), during the second half of the 20th century. It is important to continue monitoring the evolution of these source gases and ...

Comparisons between ACE-FTS and ground-based measurements of stratospheric HCl and ClONO2 loadings column abundances of hydrogen chloride (HCl) and chlorine nitrate (ClONO2) derived from infrared solar of stratospheric HCl and ClONO2 loadings at northern latitudes, Geophys. Res. Lett., 32, L15S08, doi:10.1029/2005GL

The ACE-FTS is a high resolution (0.02 cm-1) Fourier transform spectrometer which takes measurements over the 750-4400 cm-1 (2.2 to 13.3 �m) spectral region. It is one of two instruments on board the Canadian SCISAT-1 satellite which was launched on the 12 August 2003 and has now been measuring the atmosphere for ~6.5 years. ACE-FTS is a solar ...

Volatile organic compounds (VOCs) are responsible for air pollution. In recent years it has become possible to detect tropospheric VOCs using satellite instruments such as the Atmospheric Chemistry Experiment Fourier transform spectrometer (ACE-FTS). The ACE-FTS is a high resolution (0.02 cm^{-1}) instrument covering the 750-4400 cm^{-1} spectral range in ...

ACE (also known as SCISAT) is making a comprehensive set of simultaneous measurements of numerous trace gases, thin clouds, aerosols and temperature by solar occultation from a satellite in low earth orbit. A high inclination (74 degrees) low earth orbit (650 km) gives ACE coverage of tropical, mid-latitudes and polar regions. The primary instrument is a ...

SCIAMACHY(Scanning Imaging Absorption spectroMeter for Atmospheric ChartographY) onboard the European Space Agency's ENVIronmental SATellite (ENVISAT) observes the earth's atmosphere in the nadir, limb and solar/lunar occultation geometry in UV-NIR (240nm - 2380nm) spectral range. The instrument provides total columns as well as vertical profiles of the ...

The Chemical and Aerosol Sounding Satellite (CASS) mission is a proposed CSA-NASA collaboration to address the Committee on Earth Observation Satellites (CEOS) recommendation for continuity in climate-quality profile measurements of stratospheric and upper tropospheric composition. The mission would include two instruments: an infrared Fourier transform spectrometer ...

Vertical profiles of humidity from the upper troposphere to stratosphere have been retrieved from several different limb sounding and solar occultation satellite instruments since the 1980�s. Instruments retrieving water vapor include the SAGE and POAM instruments, UARS MLS, UARS HALOE, and more recently, ACE-FTS and Aura MLS. Here, ...

The primary objective of the Canadian SCISAT mission is to investigate the processes that control the distribution of ozone in the stratosphere. The SCISAT satellite consists of two major science instruments: an Atmospheric Chemistry Experiment (ACE) high-resolution Fourier-transform spectrometer (FTS) and an ultraviolet/visible/near-infrared spectrograph. These instruments primarily function in ...

The primary objective of the Canadian SciSat-1 mission is to investigate the processes that control the distribution of ozone in the stratosphere. The SciSat-1 satellite consists of two major science instruments; an Atmospheric Chemistry Experiment (ACE) high-resolution Fourier-transform spectrometer (FTS) and an ultraviolet/visible/near-infrared spectrograph. These instruments primarily function ...

SCIAMACHY (SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY) onboard the European Space Agency's ENVIronmental SATellite (ENVISAT) observes the earth's atmosphere in nadir, limb and solar/lunar occultation geometry covering the UV to NIR (240nm -2380nm) spectral range. The instrument is dedicated to improve our knowl-edge in ...

During the last 20 years, several contiguous satellite missions have recorded the vertical distribution of stratospheric and upper tropospheric ozone at 1-3 km vertical resolution. Among them, several are based on the solar occultation technique, either in the visible or the infrared spectral range. Operating from 57� inclination orbits, NASA's ...

Water vapour is the most important greenhouse gas and plays a key role in atmospheric chemistry and transport. Most of the water vapour is located in the troposphere where it significantly contributes to weather and climate. Because the tropopause acts as a cold trap, the water vapour density in the stratosphere is significantly lower and decreases rapidly with increasing altitude. However, the ...

One of the most abundant chlorine-containing molecules in the atmosphere is methyl chloride; a species whose sources are almost entirely natural. The most common sources of methyl chloride are tropical plants, senescent or dead leaves and biomass burning. As the impacts of the Montreal Protocol and its subsequent amendments are becoming apparent in the reduction of chlorofluorocarbons in the ...

The Atmospheric Chemistry Experiment (ACE) mission was launched in August 2003 to sound the atmosphere by solar occultation. Carbon monoxide (CO), a good tracer of pollution plumes and atmospheric dynamics, is one of the key species provided by the primary instrument, the ACE-Fourier Transform Spectrometer (ACE-FTS). This instrument ...

The Atmospheric Chemistry Experiment (ACE) mission was launched in August 2003 to sound the atmosphere by solar occultation. Carbon monoxide (CO), a good tracer of pollution plumes and atmospheric dynamics, is one of the key species provided by the primary instrument, the ACE-Fourier Transform Spectrometer (ACE-FTS). This instrument ...

... Accession Number : AD0677560. Title : THE OCCULTATION OF THE CRAB NEBULA BY THE SOLAR CORONA IN JUNE, 1960. ...

... Accession Number : AD0428675. Title : OCCULTATION OF THE CRAB NEBULA BY THE SOLAR CORONA IN JUNE 1963,. ...

Laboratory ozone absorption spectra were measured simultaneously in the visible (515-715 nm) and infrared (2070-2140 cm(-1)) spectral regions using SCISAT-1's MAESTRO (Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation) and ACE-FTS (Atmospheric Chemistry Experiment-Fourier Transform Spectrometer) spectrometers. An intercomparison of ...

This paper presents extensive {bias determination} analyses of ozone observations from the Atmospheric Chemistry Experiment (ACE) satellite instruments: the ACE Fourier Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO) instrument. Here we compare the latest ...

The MAESTRO Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation spectrophotometer was launched on board the ACE Atmospheric Chemistry Experiment satellite in August of 2003 This Canadian science satellite was designed specifically to investigate the chemistry of the Arctic ozone layer during the late winter and early spring when ozone ...

ACPD 7, 13861�13882, 2007 ACE-FTS satellite validation in the UTLS M. I. Hegglin et al. Title Page Chemistry and Physics Discussions Validation of ACE-FTS satellite data in the upper troposphere #12;ACPD 7, 13861�13882, 2007 ACE-FTS satellite validation in the UTLS M. I. Hegglin et al. Title Page

The MAESTRO (Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation) spectrophotometer was launched on board the ACE (Atmospheric Chemistry Experiment) satellite in August of 2003. This first Canadian science satellite in more than 30 years was designed specifically to investigate the chemistry of the Arctic ozone layer during the late ...

Previous analyses of satellite and ground-based measurements of hydrogen chloride (HCl) and chlorine monoxide (ClO) have suggested that total inorganic chlorine in the upper stratosphere is on the decline. We create HCl and ClO time series using satellite data sets extended to November 2008, so that an update can be made on the long term evolution of these two species. We use the HALogen ...

Orbital characteristics and launch vehicle requirements for a solar occultation experiment measuring

absorption spectrometry. Its design was based on that of the ATMOS ... the composition of the Earth's atmosphere by solar occultation spectrometry. The ...

Atmospheric Composition Measured by Solar Occultation Spectrometry. Geoffrey Toon, Bhaswar Sen, and Jean-Francois Blavier ...

The 2006 Canadian Arctic ACE (Atmospheric Chemistry Experiment) Validation Campaign collected measurements at the Polar Environment Atmospheric Research Laboratory (PEARL, 86.42� W, 80.05� N, 610 m a.s.l.) at Eureka, Canada from 17 February to 31 March 2006. Two of the ten instruments involved in the campaign, both Fourier transform spectrometers (FTSs), were operated simultaneously, recording ...

Ozone profiles from solar occultation instruments provide invaluable information that can be used to

2Also at Department of Physics, New Mexico Institute of Mining and ..... ACE-FTS measurement, Atmos. Chem. Phys. Disc., in press. Froidevaux, L., et al. ...

... Descriptors : (*SOLAR CORONA, SCIENTIFIC RESEARCH), (*NEBULAE, EXTRATERRESTRIAL RADIO WAVES), (*EXTRATERRESTRIAL RADIO ...

Denitrification in the Arctic winter 2004/2005: Observations from ACE-FTS J. J. Jin,1 K. Semeniuk,1 2006; published 12 October 2006. [1] Arctic denitrification in the winter 2004/2005 is analyzed using show that significant denitrification occurred in the region 15 km�20 km and that it was spatially

Measurement of short-lived photochemically-produced species in the stratosphere by solar occultation

Solar occultation spectrometry has the high SNR and spectral resolving power necessary to: "Identify weak absorptions due to trace gases and minor ...

Earth-based observations of stellar occultations provide extremely high spatial resolution for bodies in the outer solar system, about 10,000 times better than that of traditional imaging observations. Stellar occultation data can be used to establish the...

Solar occultation near-IR spectrometer trace gas. Millimeter-wave limb sounder. Satellite-to-satellite occultations, solar occultations, limb emission. Thermal IR ...

Language: English ...

The Pinhole/Occulter Facility is a powerful tool for studying the physics of the extended corona and

We use the 3-D FinROSE chemistry transport model (CTM) and Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) observations to study connections between atmospheric dynamics and middle atmospheric NOx (NOx = NO + NO2) distribution. Two cases are considered in the northern polar regions: (1) descent of mesospheric NOx in February-March 2009 after a major ...

Aug 19, 2008 ... Radio Occultation: Unraveling Saturn's Rings Date: 3 May 2005. Specially designed Cassini orbits place Earth and Cassini on opposite sides ...

Pioneer 6 S band telemetry carrier Faraday rotation during corona occultation measured by deep space

A Pinhole Occulter Facility. This facility is designed for ..... Pinhole/ Occulter Facility and the Solar Soft X-Ray Telescope share equal ...

We propose a unique coronagraphic approach to image exoplanets; an external occulter plus a hybrid telescope operating on the moon, a heliostat-like telescope design with an external occulter.

For nearly ten and one-half years, NSG-7603 provided the basic support for a program of solar system

Coronal magnetic bottle at ten solar radii from Faraday rotation measurements of occulted spacecraft

MIOSOTYS (Multi-object Instrument for Occultations in the SOlar system and TransitorY Systems) is a multi-fiber positioner coupled with a fast photometry camera. The objective is to probe the Kuiper Disk through serendipitous stellar occultations.

Occultations of stars by planets, satellites, planetary ring systems, and asteroids offer opportunities to study the occulting bodies in ways not otherwise possible from the surface of the Earth. For example, one can detect even an extremely tenuous atmos...

The Halogen Occultation Experiment (HALOE) is a solar occultation experiment that will fly on the Upper Atmosphere Research Satellite to measure mixing ratio profiles of O3, H2O, NO2, NO, CH4, HCl, and HF. The inversion of the HALOE data will be criticall...

Astrometric observations of radio source occultations by solar system bodies may be of large interest for testing gravity theories, dynamical astronomy, and planetary physics. In this paper, we present an updated list of the occultations of astrometric ra...

... several NOAA platforms (SBUV/2), SME, UARS (HALOE, CLAES), SCISAT-1 (ACE-FTS ), Odin (OSIRIS), Envisat-l (GOMOS, MIPAS, SCIAMACHY), and Aura (MLS). ...

... several NOAA platforms (SBUV/2), SME, UARS (HALOE, CLAES), SCISAT-1 (ACE-FTS ), Odin (OSIRIS), Envisat-l (GOMOS, MIPAS, SCIAMACHY), and Aura (MLS). ...

Vertical profiles of stratospheric water vapour measured by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) between September 2002 and March 2004 and retrieved with the IMK/IAA scientific retrieval processor were compared to a number of independent measurements in order to estimate the bias and to validate the existing precision estimates of the MIPAS data. The independent ...

Vertical profiles of stratospheric water vapour measured by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) with the full resolution mode between September 2002 and March 2004 and retrieved with the IMK/IAA scientific retrieval processor were compared to a number of independent measurements in order to estimate the bias and to validate the existing precision estimates of the ...

The Earth Observing System (EOS) Microwave Limb Sounder (MLS) aboard the Aura satellite has provided daily global HCl profiles since August 2004. We provide a characterization of the resolution, random and systematic uncertainties, and known issues for the version 2.2 MLS HCl data. The MLS sampling allows for comparisons with many (~1500 to more than 3000) closely matched profiles from the Halogen ...

Previous analyses of satellite and ground-based measurements of hydrogen chloride (HCl) and chlorine monoxide (ClO) have suggested that total inorganic chlorine in the upper stratosphere is on the decline. We create HCl and ClO time series using satellite data sets with the intension of extending them to beyond November 2008 so that an update can be made on the long term evolution of these two ...

The outer solar atmosphere exhibits a great variety of dynamic and energetic plasma phenomena, from the catastrophic energy release of solar flares to the steady acceleration of the solar wind. The Pinhole/Occulter Facility contains the instruments necess...

The characteristics of the populations of objects that inhabit the outer solar system carry the fingerprint of the processes that governed the formation and evolution of the solar system. Occultation surveys push the limit of observation into the very sma...

Occultations of stars by planets, satellites, planetary ring systems, asteroids, and comets provide valuable opportunities to probe the Solar System in ways otherwise impossible from the surface of the earth. For example, one can precisely measure the siz...

Work on completing our analysis of the Voyager UVS solar occultation data acquired during Neptune encounter is essentially complete, as testified by the attached poster materials. The photochemical modeling addresses the recent revision in branching ratio...

An instrument was designed for solar occultation measurements of the martian atmosphere from the Phobos spacecraft. It was composed of three different dispersive systems working in the ultraviolet (UV: 0.22-0.32 microns) for the measurement of O3 and aero...

Time variable dispersion of Crab Nebula pulsar, showing coincidence with occultation by solar corona

Bodies inhabiting the outer solar system are of interest because, due to the colder conditions, they

... between conductive heat transfer with the air temperature, absorbed long- wave and solar radiation and the long-wave radiation emission of the sensor. ...

... between conductive heat transfer with the air temperature, absorbed long- wave and solar radiation and the long-wave radiation emission of the sensor. ...

STUDY of the solar occultation of the Taurus A radio source has yielded new information concerning the structure of the solar corona at large distances1; however, the interpretation of the observations is somewhat hampered by lack of knowledge of the electron densities prevailing in the corona at the time of the ...

The Solar Occultation FTS for Inclined-orbit Satellite (SOFIS) is a solar occultation Fourier transform spectrometer (FTS), developed by the Ministry of the Environment (MOE) of Japan, that will be onboard the Global Change Observation Mission-A1 satellite. We describe the performance test results of the laboratory ...

We evaluate climatologies of upper tropospheric ozone and nitric acid retrieved from two satellite instruments (ACE-FTS and OSIRIS) with long-term in situ measurements from aircraft (MOZAIC, CR-AVE, PRE-AVE, PEM Tropics, and TC4) and ozonesondes. A global chemical transport model (GEOS-Chem) is used to guide the evaluation and to relate sparse in situ measurements with the ...

The planetary occultation program began at Lowell Observatory in 1973 with a worldwide campaign to observe mutual occultations and eclipses of the Galilean Satellites. Then the temperature profile of the Martian atmosphere was measured from data taken during the occultation of epsilon Geminorum, the Rings of Uranus were discovered as ...

Bodies residing in the outer solar system exhibit unique physical processes, and some of the lessons

S-band time delay measurements were collected from the spacecrafts Helios A and B during three solar

The use of stellar occultations to disclose unknown aspects of our Solar System is not new. But the latest such event to be reported involves an object that lies beyond the orbit of Neptune - and is a first.

Jan 24, 2011 ... UV and IR Spectrometer for solar/stellar occultation and Nadir Observations ( SPICAV/SOIR) SPICAV/SOIR is searching for the small quantities ...

Results from two retrieval algorithms, o3-aer and o3-mlr , used for SAGE III solar occultation ozone

granulation, and other solar features (sunspots, flares). L2-View: EASI. Earth Atmosphere Solar-Occultation Imager. Goals: Measure altitude profiles for 5 ...

... FOR SPACECRAFT SOLAR OCCULTATION EXPERIMENTS IN THE NEAR IR, UV, AND VISIBLE REGION, IN: NASA-CP-2004, PWA6-1/WA6-4. ...

Sep 15, 2006 ... And this is not just any solar occultation; it's a very long one. ... occultations in the mission typically last only an hour, this time it will last ... shows the relative path of the Sun as it passes behind the planet. ...

Describes occultation events involving the moon, when the moon blocks the view of planets or stars. Describes other events such as a partial solar eclipse, a penumbral lunar eclipse, meteor showers, and moon phases. Provides a list of internet resources related to these events. (DLH)

A search for occultations of stars by Uranus, Neptune, and Pluto between 1990 and 1999 was carried out by combining ephemeris information and star positions using very accurate occultation modeling software. Stars from both the Space Telescope Guide Catalog and photographic plates taken by Arnold Klemola at Lick Observatory were compared with planet ...

A search for occultations of stars by Uranus, Neptune, and Pluto between 1990 and 1999 was carried out by combining ephemeris information and star positions using very accurate occultation modeling software. Stars from both the Space Telescope Guide Catalog and photographic plates taken by Arnold Klemola at Lick Observatory were compared with planet ...

The severe Arctic ozone reduction in the winter 2004/2005 is analyzed using ACE-FTS observations and four different analysis techniques: correlations between ozone and long-lived tracers (adjusted to account for mixing), an artificial tracer correlation method, a profile-descent technique, and the empirical relationship between ozone loss and potential PSC volume. The average ...

Water vapor isotopologues provide a sensitive measure of transport and deep convective influences on water vapor in the UTLS. We use satellite observations from the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) to document the global behavior of isotopologues of H2O, including HDO and H2O(18). The ACE-FTS data reveal a minimum in (HDO/H2O) within ...

Two types of satellite based occultation missions are considered for measuring atmospheric constituents. Nominal cases for each type are presented to demonstrate representative solutions to orbit design problems. For the solar occultation mode, large areas of the globe can be covered during a one year mission, but the measurements are ...

Two types of satellite-based occultation missions are considered for measuring atmospheric constituents. Nominal cases for each type are presented to demonstrate representative solutions to orbit design problems. For the solar occultation mode, large areas of the globe can be covered during a 1-year mission, but the measurements are ...

The characteristics of the populations of objects that inhabit the outer solar system carry the fingerprint of the processes that governed the formation and evolution of the solar system. Occultation surveys push the limit of observation into the very small and distant outer solar system objects, allowing us to set ...

Illustration for HCl at 10S-20S, 1.5 hPa The use of overlapping satellite datasets for HCl (from HALOE, ACE-FTS, and Aura MLS) can lead to a long-term data ...

Then Born-Oppenheimer approximation states that the wave function +(r,R) of the molecule is separable into a nuclear and electronic wave function ...

Oct 29, 2003 ... (The white circle on the occultation disc shows the actual size and location of the solar disc). Note the bright white features extending ...

HALOE is a solar occultation experiment designed to monitor the vertical distribution of HCl, HF, CH4, and NO by gas filter correlation radiometry and H2O, ...

the tropopause and can alter local tropopause levels [e.g., ...... V. L. Harvey, Laboratory for Atmospheric and Space Physics, University ...

Derived Meteorological Products (DMPs, including potential temperature (theta), potential vorticity,

Robert S. Harwood13, and Joe W. Waters1. Abstract. Derived Meteorological Products ..... validation, are discussed by Chu et al. [1989], Cunnold et al. ...

play or you will find them for sale in the gift shop. Personally I ...... For me , it"s look like the exit of an occultation of Venus by a crescent of moon! ...

Just spell out the terms, especially for those encountered .... uses language that describes ACE higher. Technically what the authors say is correct and ...

Goldstone Solar System Radar Mars Radar RSD at DSS-63/Arecibo ending in week 48 and. Mercury Radar in week 48. Mars Express occultation in weeks 48 - 51 ...

The Pinhole Occulter Facility (P/OF) is a Space Shuttle based experiment for the production of solar

FACILITIES PROGRAM SPONSORS ACCOMPLISHMENTS AWARDS & RECOGNITIONS TIMELINE SYSTEMS ROCKETS SOLAR & LUNAR STUDIES ASTRONOMY OCEAN & ENVIRONMENT MATERIALS 85 YEARS OF INNOVATION...

... Microstripes transient field solver, and empirical measurement. .... Its focus is on satellite measurement capabilities for temperature and gaseous species that ... Limb absorption by solar occultation, limb infrared radiometry, ...

analysed in-situ solar Wind measurements by Helios 2 inside 1 AU at time ... on Helios measurernents is similar to that used in the radio occultation ...

HALOE is a solar occultation experiment designed to monitor the vertical distribution of HCl, HF, CH4, and NO by gas filter correlation radiometry and H2O, ...

carbon tetrafluoride (CF4) increase inferred from 1985�2004 infrared space-based solar occultation

The instrument uses a technique called solar occultation to measure the amount of ... "From the ground, it looks like a perfectly clear sky day," he said, ...

dependent pressure broadening line shapes and intensities: Uncertainties in pressure broadening coefficients can have a significant impact on the retrievals ...

Martian atmospheric temperature and pressure and temperature gradient determination by least squares

Author: L'vov, Victor; Malkin, Zinovy; Tsekmeister, Svetlana. Abstract: Astrometric observations of radio source occultations by solar system bodies may be ...

ON THE DETERMINATION OF SOLAR E W EMISSION ALTITUDES. USING THE EARTH As AN OCCULTING DISK. S. 0. Kastner and C. L. wolff ace Flight Center elt, Maryland ...