Coupling general circulation model (CCM3) with mesoscale model(MM5) for regional climate studies

摘要

The NCAR/CCM3 general circulation model (GCM) is coupled withregional weather prediction model PSU/NCAR MM5 for regional climatestudies. The main motivation for this effort comes from the observationthat the representation of sub-GCM grid scale forcing is critical toaccurately simulate the regional distribution of climatic variables suchas air temperature and precipitation over meso-scale regions. UsingPSU/NCAR MM5 driven by NCAR/CCM3 large scale fields, 1-day events overNE Asia (centered on the Korean Peninsula) is simulated. In this casestudy, the mechanical coupling methodology and the results of testsimulation are shown. This work illustrates the use of the coupledmodeling technique for long-term regional climate simulation