Information about the "abrupt climate change" phenomenon characterized by rapid changes in the Earth's climate....
NBII National Biological Information Infrastructure
Although abrupt climate changes can occur for many reasons, it is conceivable that human forcing of climate change is increasing the probability of large, abrupt ...
NASA Website
There is a growing body of theoretical and empirical support for the concept of instabilities in the climate system, and indications that abrupt climate change may in some cases contribute to abrupt extinctions. Theoretical indications of instabilities ca...
National Technical Information Service (NTIS)
Climates have sometimes changed abruptly in the past as a result of volcanic eruptions or impacts of huge rocks from space.
NSDL National Science Digital Library
... Appendix D - Observed temperature changes on each ... Doug Randall, An Abrupt Climate Change Scenario and ... to A Climate Changed World, (The ...
DTIC Science & Technology
Information about abrupt climate change research. From the site:"Most of the studies and debates on potential climate change have focused on the ongoing ... ...
Today, carrying capacity, which is the ability for the Earth and its natural ... Abrupt climate change is likely to stretch carrying capacity well beyond its already ...
Abrupt Climate Change: Looking at Ocean Currents. A new report supports the hypothesis that heat transfer by ocean currents, rather than global heating or ...
Imperatives for the Next Decade and Beyond Other Related Titles topleft topright Abrupt Climate Change: Inevitable Surprises (2002) Ocean Studies Board (OSB) Polar Research Board...
Science.gov Websites
... Title : Two Degrees of Separation: Abrupt Climate Change and the Adverse Impact to US National Security. Descriptive Note : Research paper. ...
Economic and ecological impacts of abrupt climate change This publication is not available online. Please contact a FORT author (see sidebar to right) o...
How fast will climate change in the future? How fast has climate changed in the past? Did climate change happen simultaneously around the world? ...
Abrupt Climate Change NOAA Abrupt Climate Change Climatic Extremes and Weather Events Global Warming and Hurricanes Atlantic Hurricanes and Climate (PDF, 2 pp., 484 kb, About...
This site serves as a broad introduction to the subject of abrupt climate change. It cites several historical examples of climate change and their impact on human civilization. In addition, some of the current questions about climate are presented including the drying of ...
The point of these pages is to examine the scientific basis behind abrupt climate change, and evaluate the likelihood of it happening in the future using a question and answer format. Information ranges from a definition of abrupt climate change to the precursor signals ...
Early warning of the Earth's tipping points will bring us closer to staving off abrupt climate change, but a societal tipping point is needed to achieve sustainability.
NASA Astrophysics Data System (ADS)
modeling and diagnostic proposals focused on understanding the causes of abrupt climate change: � To improve our understanding of the causes of climate variability through modeling and diagnostic studies on multiannual and longer time scales, and � To understand the mechanisms for abrupt ...
E-print Network
Models suggest that dramatic changes in the ocean circulation are responsible for abrupt climate changes during the last ice age and may possibly alter the relative climate stability of the last 10,000 years.
PubMed Central
This lesson explores how scientific knowledge changes in the context of abrupt climate change. Until a few years ago, it was believed that climate changes gradually on Earth. But results from ice cores and other geologic records of past temperature ...
... impacted by more subtle changes in its ... about Southern Hemisphere climate change make this ... Natural Resources The changing weather patterns ...
... about the potential for abrupt climate changes from global warming during this century. Climate model simulations and observations suggest that rapid and sustained September arctic sea ice loss is likely i...
An important reason to understand past climate changes is to help improve climate predictions for the future. This can be a difficult task due to the disparities in ...
This frequently asked questions (FAQ) feature serves as a summary that covers some of the major points about abrupt climate change that are often misunderstood. Several decades of scientific research have yielded significant advances in understanding the ocean's role in regulating Earth's climate. The information ...
Abstract. First, we review the evidence that abrupt climate changes have occurred in the past and then demonstrate that climate models have developing capacity to simulate many of these changes. In particular, the processes by which changes in the ocean circulation drive ...
to the potential abrupt changes, Deevey's (1939) pollen zones represent a dynamic equilibrium between climate that abrupt climate change can be inferred from the pollen data themselves because the events rapidly of hemlock by a pest or pathogen (Davis, 1981). The removal of ...
as a form of abrupt climate change in the NRC report. An unprecedented event occurring in a given place10.1098/rsta.2003.1239 Abrupt climate change: can society cope? By Mike Hulme Tyndall Centre for Climate Change Research and ...
The ocean's thermohaline circulation has long been recognized as potentially unstable and has consequently been invoked as a potential cause of abrupt climate change on all timescales of decades and longer. However, fundamental aspects of thermohaline circulation changes remain poorly understood.
Apr 20, 2009 ... Critical Turning Point can Trigger Abrupt Climate Change ... And the closer we are to the Sun, the more solar radiation and the more heat we ...
Abstract: This data set consists of Deep Lake Minnesota Sediment Data, used for Abrupt Holocene Climate Change analysis by Hu et al. Related URL ...
Deep Lake Minnesota Sediment Data for Abrupt Holocene Climate Change Entry ID: NOAA_NCDC_PALEO_2000-013. [ View Full Record ]. [ Update this Record ] ...
is a list of popular options: Download Firefox 3 Download IE 7 X Close this alert Abrupt Climate Change Masthead IMPACTS Project University Projects Home Tasks Research Highlights...
This report is an attempt to describe what is known about abrupt climate changes and their impacts, based on paleoclimate proxies, historical observations, and modeling. Large, abrupt climate changes have repeatedly affected much or all of the earth, locally reaching as ...
This clearinghouse provides links to information about abrupt climate change, a phenomenon which recent evidence indicates is not unusual. Users can choose from a variety of links that lead to reports, presentations, media releases, and a frequently asked questions (FAQ) feature. Other sections contain links to newspaper articles on ...
U.S. Geological Survey (USGS) scientists who study trends in climate change will be presenting the results from new studies at a workshop held in Pacific ... ...
The discovery in recent years of abrupt climatic changes in climate proxy records from Greenland ice cores and North Atlantic sediment cores, and from other sites around the world, has diverted attention from gradual insolation changes caused by Earth`s orbital variations to more rapid ...
Energy Citations Database
, and other models designed to assess ecological, physi- cal, and human responses to changing climate. USGS to global-scale models; � Forecast precipitation changes as a consequence of changing climate, at geographic� Consequences of abrupt changes ...
Dec 19, 2008 ... Commissioned by the U.S. Climate Change Science Program, the report was authored by experts from the U.S. Geological Survey, ...
... Minor and trace element records from ... The study addressed three major ... THESES, FORAMINIFERA, TRACE ELEMENTS, CLIMATE, SEDIMENTS ...
by the United States Climate Change Science Program -- a report that is simply titled, Abrupt Climate Change, but they are not strictly local. They are parts of large-scale changes in the climate system. Q [KD]: So for this report Dynamics Laboratory ...
Feb 25, 2009 ... Oceanic Seesaw Links Northern and Southern Hemisphere during Abrupt Climate Change. February 25, 2009. Very large and abrupt changes in temperature recorded ...
This report considers progress in understanding four types of abrupt change in the paleoclimatic record that stand out as being so rapid and large in their impact that if they were to recur, they would pose clear risks to society in terms of our ability t...
Rapid climate change characterizes numerous terrestrial sediment records during and since the last glaciation. Vegetational response is best expressed in terrestrial records near ecotones, where sensitivity to climate change is greatest, and response times are as short as decades.
The recent increased pace in which extreme weather patterns are occurring has received national attention. Whatever the catalyst for this abrupt climate change, stability for Africa hinges upon mitigating the effects of global climate change to prevent fu...
The issue of abrupt climate change has been highlighted by a recent National Academy of Sciences (NRC) study as one of the most troubling potential aspects of future global climate change. The science of abrupt climate change ...
Predicting abrupt changes in ecological systems could help stave off some of the worst impacts of climate change. But how close are we to foreseeing tipping points?
Abstract: Greenland ice-core records provide an exceptionally clear picture of many aspects of abrupt climate changes, and particularly of those associated with ...
Records of past climates contained in ice cores, ocean sediments, and other archives show that large, abrupt, widespread climate changes have occurred repeatedly in the past. These changes were especially prominent during the cooling into and warming out of the last ice age, but persisted into ...
This is a brief version of an in-depth report published as a book, which examines the current scientific evidence and theoretical understanding used to describe current knowledge about abrupt climate change, including patterns and magnitudes, mechanisms, and probability of occurrence. The report identifies critical knowledge gaps ...
We propose that past abrupt climate changes were probably a result of rapid and extensive variations in sea-ice cover. We explain why this seems a perhaps more likely explanation than a purely thermohaline circulation mechanism. We emphasize that because of the significant influence of sea ice on the climate ...
PubMed
This document presents a plausible scenario for abrupt climate change that can be used to explore implications for food supply, health and disease, commerce and trade, and their consequences for United States national security. The world-wide ramifications of a collapse of the thermohaline circulation in the North Atlantic Ocean are ...
Projections in the Forest Service Assessment assume a future in which changes in timber production and land use are not abrupt discontinuities from the past. These assumptions may not be met if the earth's climate changes rapidly. The document summarizes ...
-2041 compared to 1950-2000 Climate models project widespread changes in precipitation patterns for 2021-atmosphere-land system and their influence on decadal-scale climate variability. The program funds an array of modeling and diagnostic studies focused on large-scale climate variability and ...
The effect of abrupt changes in environment on the athlete's organs, systems, and performance are discussed. Only differences in the behavior of the athletes caused by differences in time zones, and not those associated with altitude and/or climate, are c...
... will most likely not return to its previous state," said USGS Associate Director for Biology Susan Haseltine. "The ... ...
Peteet, D., 2000: Sensitivity and rapidity of vegetational response to abrupt climate change. Proc. Natl. Acad. Sci. , 97, 1359-1361. ...
... Benthic foraminiferal Cd/Ca results from an intermediate depth, western South Atlantic core (1,268 m) are consistent with reduced export into the ...
Evidence suggests that the last glacial period came to an abrupt close about 13,500 years ago. This evidence indicates: (1) that the melting of the North American ice sheet commenced abruptly at this time; (2) that surface temperatures in the northern Atlantic rose sharply at this time; (3) that surface water conditions in the Antarctic ...
A sudden change in climate is brought about by complex interactions in the climate system, including interactions between land and atmosphere, that can give rise to strong positive feedback mechanisms. Paleoclimatic studies have shown that abrupt climate changes have ...
as methane hydrate in the sea floor and permafrost soils and (2) climate-driven changes in methane emissions from northern high-latitude and tropical wetlands. � The size of the methane hydrate reservoir-latitude hydrates and wetlands resulting from increasing Arctic temperatures. � Catastrophic release of methane
The tropics play a major role in global climate dynamics, and are vulnerable to future climate change. We present a record of East African climate since 55 ka, preserved in Lake Malawi sediments, that indicates rapid shifts between discrete climate modes related to abrupt ...
The US National Research Council de�nes abrupt climate change as a change of state that is su�ciently rapid and su�ciently widespread in its e�ects that economies are unprepared or incapable of adapting. This may be too restrictive a de�nition, but abrupt climate ...
One of the most controversial conclusions to emerge from many of the first generation of integrated assessments models (IAMs) of climate policy is a recommendation for negligible near-term abatement of greenhouse gases. . Typically, such studies are con- ducted using smoothly varying climate change scenarios or impact responses. ...
The major deglacial intensification of the southwest monsoon occurred at 11,450 {+-} 150 calendar years before present, synchronous with a major climate transition as recorded in Greenland ice. An earlier event of monsoon intensification at 16,000 {+-} 150 calendar years before present occurred at the end of Heinrich layer 1 in the Atlantic and parallels the initial rise in ...
A simulation model of a population having internal (genetic) structure is presented. The population is subject to selection pressure coming from the environment which is the same in the whole system but changes in time. Reproduction has a sexual character with recombination and mutation. Two cases are considered � oscillatory changes of the environment ...
Understanding abrupt climate changes requires detailed spatial/temporal records of such changes, and to make these records, we need rapidly responding, geographically widespread climate trackers. Glacial systems are such trackers, and recent additions to the stratigraphic record show ...
