HR: 15:10h
AN: GC23B-07    [Abstracts]
TI: Climate Downscaling Using a Mesoscale Model on a Hemispheric Grid
AU: * Hahmann, A N
EM: hahmann@ucar.edu
AF: National Center for Atmospheric Researc, 1850 Table Mesa Drive, Boulder, CO 80301, United States
AU: Pinto, J O
EM: pinto@ucar.edu
AF: National Center for Atmospheric Researc, 1850 Table Mesa Drive, Boulder, CO 80301, United States
AU: Rife, D L
EM: drife@ucar.edu
AF: National Center for Atmospheric Researc, 1850 Table Mesa Drive, Boulder, CO 80301, United States
AB: Under a project funded by the Defense Threat Reduction Agency (DTRA), we have developed a system to downscale global reanalysis fields to a high resolution global grid, to be used within DTRA's Hazard Prediction Assessment Capability, a decision support system used for responding to releases of hazardous material into the atmosphere. The proposed system uses MM5 (with both observation and grid nudging) run on two hemispheric grids centered on the poles, and later merged to produce a seamless global product at an effective resolution 45 km for 1979 to 2005. In this presentation we will discuss preliminary results from the verification of the dynamic and thermodynamic fields at the global and regional scale, and discuss the challenges associated with running such a computationally expensive and data-extensive system.
DE: 1616 Climate variability (1635, 3305, 3309, 4215, 4513)
DE: 1637 Regional climate change
DE: 3305 Climate change and variability (1616, 1635, 3309, 4215, 4513)
DE: 3315 Data assimilation
DE: 3329 Mesoscale meteorology
SC: Global Environmental Change [GC]
MN: 2007 Fall Meeting