MM5v3多种物理过程不同参数化方案的组合试验——对东亚区域气候模拟

Combinatorial Optimization Using MM5v3's Various Parameterizations in Different Physical Processes:Regional Climate Simulation in East Asia

考虑区域气候模式中诸物理过程的多种参数化方案的相互影响,对MM5v3模式中3个物理过程设计了16组不同参数化方案的组合试验.用1997和1998年6～8月NCEP/NCAR再分析资料作了东亚的区域气候模拟.经检验、分析和比较各组合方案在东亚区域的模拟能力,发现MM5v3模式能适合对东亚地区的区域气候模拟;当用MM5V3作东亚区域气候模拟时,Kain＿Fritsch积云参数化方案、OSULSM陆面过程参数化方案与CCM2辐射参数化方案的组合更为合理.这些结果对于发展适合我国的新一代区域气候模式有一定的参考意义.

By using MM5v3's sixteen combinatorial schemes in three different physical processes paramete_rizations schemes and the NCEP/NCAR reanalysis data, two regional climate simulation experiments in summers of 1997 and 1998 in East Asia were conducted to study the interaction between different physical parameterization schemes in regional climate model. We analysed and compared the simulation ability of these sixteen different schemes and found that MM5v3 model could be used for regional climate simulation in East Asia. Differences in simulation results produced by various combinatins of schema were substantial, and the simulation ability of combinatorial schems with Kain_Fritsch cumulus parameterization, OSU LSM land surface parameterization and CCM2 radiation parameterization was superior to the others. These results were useful for developing the new generation regional climate model.