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High-Resolution Global Climate Simulation.

DE200515013383

Publication Date	2001
Personal Author	Duffy, P. B.
Page Count	14
Abstract	One approach to simulating regional-scale climate, and the societal impacts of climate change, is to run global climate models at much finer spatial resolutions. This has not been attempted previously because the computational demands have been prohibitive. By taking advantage of ASCI-scale computer resources at DOE/LLNL, we have successfully performed global climate simulations at much finer spatial resolutions than ever attempted before. As expected, we found that these high-resolution simulations produce much more realistic regional climates than coarse-resolution models do. A major reason for this is better representation of topography, which strongly influences surface temperature and precipitation. We also found that the results of fine-resolution simulations are superior to those of coarse-resolution simulations even on scales that are resolved in the coarse-resolution simulations.
Keywords	Climatic change Computerized simulation Spatial resolution General circulation models Topography Global Climates Atmospheric percipitation Surface temperature Weather observations
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200522

High-Resolution Global Climate Simulation.

High-Resolution Global Climate Simulation.
DE200515013383

Publication Date	2001
Personal Author	Duffy, P. B.
Page Count	14
Abstract	One approach to simulating regional-scale climate, and the societal impacts of climate change, is to run global climate models at much finer spatial resolutions. This has not been attempted previously because the computational demands have been prohibitive. By taking advantage of ASCI-scale computer resources at DOE/LLNL, we have successfully performed global climate simulations at much finer spatial resolutions than ever attempted before. As expected, we found that these high-resolution simulations produce much more realistic regional climates than coarse-resolution models do. A major reason for this is better representation of topography, which strongly influences surface temperature and precipitation. We also found that the results of fine-resolution simulations are superior to those of coarse-resolution simulations even on scales that are resolved in the coarse-resolution simulations.
Keywords	Climatic change Computerized simulation Spatial resolution General circulation models Topography Global Climates Atmospheric percipitation Surface temperature Weather observations
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200522