New (CESM) Computer Model Advances Climate Change Research

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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 the National Science Foundation, which is NCAR's sponsor.

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The CESM builds on the Community Climate System Model, which NCAR scientists and collaborators have regularly updated since first developing it more than a decade ago. The new model enables scientists to gain a broader picture of Earth's climate system by incorporating more influences. Using the CESM, researchers can now simulate the interaction of marine ecosystems with greenhouse gases; the climatic influence of ozone, dust, and other atmospheric chemicals; the cycling of carbon through the atmosphere, oceans, and land surfaces; and the influence of greenhouse gases on the upper atmosphere.

In addition, an entirely new representation of atmospheric processes in the CESM will allow researchers to pursue a much wider variety of applications, including studies of air quality and biogeochemical feedback mechanisms.

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The new model's advanced capabilities will help scientists shed light on some of the critical mysteries of global warming, including:

* What impact will warming temperatures have on the massive ice sheets in Greenland and Antarctica?
* How will patterns in the ocean and atmosphere affect regional climate in coming decades?
* How will climate change influence the severity and frequency of tropical cyclones, including hurricanes?
* What are the effects of tiny airborne particles, known as aerosols, on clouds and temperatures?

http://www.sciencedaily.com/releases/2010/08/100818154730.htm