P-σ九层区域气候模式对东亚区域气候季节与年际变化的模拟  

Seasonal and Interannual Variation Simulation of the Regional Climate of East Asia by a Nine-Level P-σ Regional Climate Model

作　　者：王世玉[1] 钱永甫[2] 

机构地区：[1]中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室 [2]南京大学大气科学系,南京210093

出　　处：《大气科学》2003年第5期798-810,共13页Chinese Journal of Atmospheric Sciences

基　　金：国家自然科学基金资助项目 4973 5 1 70

摘　　要：利用所发展的P σ九层区域气候模式较成功地模拟了东亚地区区域气候的季节与年际变化 ,结果表明 ,初夏南亚高压的季节性变化与亚洲夏季风的建立具有密切关系 ,成功地模拟出了降水的季节变化 ,但夏季降水模拟较差。实际嵌套场的引入 ,使降水模拟得以改善。实际海温的引入使得南亚高压的模拟增强 ,而西太平洋副高的模拟则与西太平洋暖池地区的海温具有密切关系 ,在厄尔尼诺年 ,与使用月平均海温相比 ,副高有明显的增强或减弱 。The seasonal and interannual variation of the regional climate of East Asia have been successfully simulated by a nine\|level P\|σ regional climate model in this paper. The results show that the seasonal variation of the South Asia High has a close relationship with the onset of Asian summer monsoon. The seasonal variation of the precipitation has been simulated fairly, but not good in the summer, while the simulation of precipitation has been improved using the observed nesting field. The observed SST has a great effect on the simulation, the simulated South Asia High has become strong, while the simulation of the West Pacific subtropical high (WPSH) has a good relationship with the SST of the West Pacific Ocean warm pool. During the El Nio year, comparing with the simulation using the monthly averaged SST, the WPSH become more strong or more weak, it has an uncertain relationship with the variation of the SST in the warm pool.

关 键 词：东亚 区域气候 季节变化 年际变化 气候模拟 南亚高压 西太平洋副高 厄尔尼诺 

分 类 号：P461.2[天文地球—大气科学及气象学] P467