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Latest Climate model Stories

2008-09-09 12:00:16

The U.S. Department of Energy announced it will make available more than 10 million hours of computing time to study advanced climate change models. The department's Office of Science will allocate the computer time to the National Oceanic and Atmospheric Administration to explore advanced climate change models at three of the department's national laboratories. The project is part of a three-year agreement on collaborative climate research that was signed Monday by the two agencies. NOAA...

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2008-06-12 13:15:00

Answers may be hidden in the tropopause, 32,000 to 56,000 feet highScientists are deploying an advanced research aircraft to study a region of the atmosphere that influences climate change by affecting the amount of solar heat that reaches Earth's surface.Findings from the project, based at the National Center for Atmospheric Research (NCAR) in Boulder, Colo., will be used by researchers worldwide to improve computer models of global climate in preparation for the next report by the...

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2008-05-08 00:20:00

The sun has powered almost everything on Earth since life began, including its climate. The sun also delivers an annual and seasonal impact, changing the character of each hemisphere as Earth's orientation shifts through the year. Since the Industrial Revolution, however, new forces have begun to exert significant influence on Earth's climate. "For the last 20 to 30 years, we believe greenhouse gases have been the dominant influence on recent climate change," said Robert Cahalan,...

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2008-04-02 11:50:00

Using state-of-the-art supercomputers, Lawrence Livermore National Laboratory climate scientists have performed a 400-year high-resolution global ocean-atmosphere simulation with results that are more similar to actual observations of surface winds and sea surface temperatures. The research, led by LLNL atmospheric scientist Govindasamy Bala, appears in the April 1 edition of the Journal of Climate.The researchers used the Community Climate System Model (CCSM), which is sponsored by the...

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2007-05-30 19:05:00

NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth's climate close to critical tipping points, with potentially dangerous consequences for the planet. From a combination of climate models, satellite data, and paleoclimate records the scientists conclude that the West Antarctic ice sheet, Arctic ice cover, and regions providing fresh water sources and species habitat are under threat from continued global warming. The research...

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2007-05-01 00:20:00

BOULDER, Colo. -- Arctic sea ice is melting three times faster than many scientists project, U.S. researchers reported Monday, just days ahead of the next major international report on climate change. Scientists at the National Center for Atmospheric Research and the University of Colorado in Boulder concluded, using actual measurements, that Arctic sea ice has declined at an average rate of about 7.8 percent per decade between 1953 and 2006. By contrast, 18 computer models used by the...

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2006-05-03 15:50:00

NEW YORK -- An important wind circulation pattern over the Pacific Ocean has begun to weaken because of global warming caused by human activity, something that could alter climate and the marine food chain in the region, new research suggests. It's not clear what climate changes might arise in the area or possibly beyond, but the long-term effect might resemble some aspects of an El Nino event, a study author said. El Ninos boost rainfall in the southern United States and western South...

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2006-05-03 07:41:22

WASHINGTON -- A nagging difference in temperature readings that had raised questions about global warming has been resolved, a panel of scientists reported Tuesday. "This significant discrepancy no longer exists because errors in the satellite and radiosonde data have been identified and corrected," researchers said in the first of 21 assessment reports planned by the U.S. Climate Change Science Program. The findings show clear evidence of human influences on climate due to changes in...

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2006-03-01 07:08:38

NASA -- Scientists from NASA and Columbia University, New York, have used computer modeling to successfully reproduce an abrupt climate change that took place 8,200 years ago. At that time, the beginning of the current warm period, climate changes were caused by a massive flood of freshwater into the North Atlantic Ocean. This work is the first to consistently recreate the event by computer modeling, and the first time that the model results have been confirmed by comparison to the climate...

2005-08-25 11:39:14

BOULDER - Scientists at the National Center for Atmospheric Research (NCAR) have created a computer simulation showing Earth's climate in unprecedented detail at the time of the greatest mass extinction in the planet's history. The work gives support to a theory that an abrupt and dramatic rise in atmospheric levels of carbon dioxide triggered the massive die-off 251 million years ago. The research appears in the September issue of Geology. "The results demonstrate how rapidly rising...


Word of the Day
drawcansir
  • A blustering, bullying fellow; a pot-valiant braggart; a bully.
This word is named for Draw-Can-Sir, a character in George Villiers' 17th century play The Rehearsal.
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