MM5BATS对东亚夏季气候及其变化的模拟试验  

Simulation Experiments of Summer Climate and Changein East Asian Using MM5BATS Regional Climate Model

作　　者：汤剑平[1] 赵鸣[1] 苏炳凯[1] 赵得明[1] 

机构地区：[1]南京大学大气科学系

出　　处：《高原气象》2005年第1期28-37,共10页Plateau Meteorology

基　　金：国家重点基础研究发展规划项目(G1999043400)资助

摘　　要：将陆面过程模式BATS耦合到中尺度模式 MM5V3 中与另一区域气候模式 RegCM2 一起对1995-2000年夏季东亚的区域气候作了模拟试验, 并与实际资料作了比较。模拟试验结果表明: (1)两个模式均能较合理地模拟出6年夏季平均的环流、温度和海平面气压等的变化, MM5BATS的模拟结果要略优于RegCM2的结果; (2)MM5BATS模式较合理地模拟出了 6 年夏季平均的降水分布, 而RegCM2模式的模拟结果偏强; (3)MM5BATS模式较好地模拟出了 1997 年和 1998 年夏季环流场的变化, 对降水的模拟也比较合理。RegCM2对1997年和 1998 年降水的模拟基本上都偏强。模拟试验结果还表明, 在区域气候模拟中有必要采用更新的模式。This paper presents a 6-year (1995\_2000) summer climate simulation using the MM5V3 model coupled with the BATS1e land surface model and the NCAR RegCM2 regional climate model over East Asia. The simulation results were compared with the observation. The results show that: (1) these two regional climate models could simulate the 6-year summer mean circulation, temperature and sea level pressure. The simulation result of MM5BATS is better than the RegCM2′s. (2) MM5BATS could better simulate the distribution of 6-year summer mean precipitation rate. The RegCM2 overestimated the precipitation rate. (3) MM5BATS could simulate the change of summer circulation in 1997 and 1998, and the distribution of precipitation. And RegCM2 overestimated the summer precipitation in 1997 and 1998. The simulation results show that it is necessary to use the next generation model for regional climate simulation.

关 键 词：MM5BATS 区域气候模式 陆面过程 

分 类 号：P456.7[天文地球—大气科学及气象学]