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Latest Climate model Stories

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2010-11-23 10:50:27

Current state-of-the-art global climate models predict substantial warming in response to increases in greenhouse gases such as carbon dioxide. The models, though, disagree widely in the magnitude of the warming we can expect. The disagreement among models is mainly due to the different representation of clouds. Some models predict that global mean cloud cover will increase in a warmer climate and the increased reflection of solar radiation will limit the predicted global warming. Other...

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2010-11-16 12:20:00

U.S. and British meteorologists said on Monday that not only is Earth's surface warming, but the troposphere is heating up also. The scientists found that warming in this key atmospheric layer was occurring, just as many researchers expected as more greenhouse gases build up and trap heat close to the Earth. This study put to rest a controversy that began 20 years ago when a 1990 scientific report raised questions about whether the troposphere was warming, even as Earth's surface...

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2010-10-28 14:07:52

Wildfires may seem like a fixed and unchanging force of nature. They're not. Over long time scales, research has shown that both the climate and humans have a profound effect on wildfire activity around the globe. Now new NASA research shows that while we have been suppressing this natural force for the past century, we may be, inadvertently, about to put nature back in control. Charcoal layers in sediments and methane concentration in ice cores show that the amount of global burning can...

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2010-10-20 10:05:00

As a result of global warming, much of the Western Hemisphere, as well as large sections of Europe, Asia, Africa, and Australia, face the threat of an extreme drought within the next three decades, experts from the National Center for Atmospheric Research (NCAR) claim in a new report. The study, which was conducted by NCAR scientist Aiguo Dai, analyzed 22 computer climate models, an index of drought conditions, and previously published works from other scientists and determined that extremely...

2010-10-15 16:53:57

Water vapor and clouds are the major contributors to Earth's greenhouse effect, but a new atmosphere-ocean climate modeling study shows that the planet's temperature ultimately depends on the atmospheric level of carbon dioxide. The study, conducted by Andrew Lacis and colleagues at NASA's Goddard Institute for Space Studies (GISS) in New York, examined the nature of Earth's greenhouse effect and clarified the role that greenhouse gases and clouds play in absorbing outgoing infrared...

2010-09-16 17:45:22

Scientists at the Carnegie Institution's Department of Global Ecology have taken a new approach on examining a proposal to fix the warming planet. So-called geoengineering ideas"”large-scale projects to change the Earth's climate"”have included erecting giant mirrors in space to reflect solar radiation, injecting aerosols of sulfate into the stratosphere making a global sunshade, and much more. Past modeling of the sulfate idea looked at how the stratospheric aerosols might affect...

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2010-08-19 11:25:19

Scientists can now study climate change in far more detail with powerful new computer software released by the National Center for Atmospheric Research (NCAR).The Community Earth System Model (CESM) will be one of the primary climate models used for the next assessment by the Intergovernmental Panel on Climate Change (IPCC). The CESM is the latest in a series of NCAR-based global models developed over the last 30 years. The models are jointly supported by the Department of Energy (DOE) and...

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2010-07-13 09:40:00

Greenhouse gases are playing a role in changes, say scientists Newly detected rising sea levels in parts of the Indian Ocean, including the coastlines of the Bay of Bengal, the Arabian Sea, Sri Lanka, Sumatra and Java, appear to be at least partly a result of human-induced increases of atmospheric greenhouse gases, says a study led by the University of Colorado at Boulder. The study, which combined sea surface measurements going back to the 1960s and satellite observations, indicates...

2010-06-28 13:05:54

NASA's Goddard Space Flight Center in Greenbelt, Md. recently introduced the NASA Center for Climate Simulation (NCCS), an integrated set of supercomputing, visualization, and data interaction technologies that will enhance agency capabilities in weather and climate prediction research. "The NASA Center for Climate Simulation has been designed to meet the unique computational needs of the climate modeling community supported by NASA's Earth Science Division," said Phil Webster, chief of...

2010-06-28 10:08:00

GREENBELT, Md., June 28 /PRNewswire-USNewswire/ -- NASA's Goddard Space Flight Center in Greenbelt, Md. recently introduced the NASA Center for Climate Simulation (NCCS), an integrated set of supercomputing, visualization, and data interaction technologies that will enhance agency capabilities in weather and climate prediction research. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) "The NASA Center for...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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