in the previous version of CCSM, thereby producing far more information about regional variations in climate and climate change. The new version also captures such features as continental land temperatures and upper atmospheric temperatures far more accurately than the previous version. In a test, the model closely simulated changes in global temperatures over the last century.

In addition to simulating temperatures over the next century, scientists will use the model to study climate patterns of the past, such as the peak of the last ice age 21,000 years ago. They will also use it to probe chemical processes and the cycling of carbon between the atmosphere, ocean, and land, as well as the localized impacts of sulfates and other pollutants on climate.

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22-Jun-2004

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