区域气候模式对ENSO-PSAC-东亚气候异常桥的模拟能力检验  

Testing the Ability of Regional Climate Model to Simulate ENSO-PSAC-East Asian Climate Teleconnection

作　　者：李秀珍[1] 梁卫[1] 

机构地区：[1]中山大学季风与环境研究中心/大气科学系,广州510275

出　　处：《中山大学研究生学刊（自然科学与医学版）》2010年第1期71-78,共8页Journal of the Graduates Sun YAT-SEN University(Natural Sciences.Medicine)

摘　　要：利用区域气候模式RegCM3对1982/1983年及1998/1999年的10月至次年2月的中国东南部降水进行了模拟试验,考察了模式对ENSO年份菲律宾反气旋活动的模拟能力。结果表明:RegCM3能够较好地模拟ENSO年份我国东南部的降水异常;垂直环流、水汽输送通量及其散度异常场的模拟结果均与实际吻合,并能解释降水异常的原因;另外,RegCM3成功地模拟出ENSO年份菲律宾海上的反气旋的活动情况。该模式适用于ENSO年份冬季东太平海温异常—东亚气候异常的研究。A new regional climate model RegCM3 has been used to simulate precipitation in October-February 1982/1983 and 1998/1999 over Southeastern China, and its capability for the activity of Philippine Sea anticyclone （PSAC） during El-nino/La-nina is investigated. The result shows that RegCM3 could well reproduce the anomalous precipitation over Southeastern China during ENSO years. The simulated vertical circulation, water vapor transport and its divergence anomalous is coincide with the actual situation, which can tell the reason for the anomalous precipitation. The activity of PSAC can also be welt simulated. Therefore we consider that the model can be applied to the study of Eastern Pacific SSTA-Southeastern China climate teleconnection during winter of ENSO years.

关 键 词：菲律宾反气旋 区域气候模式 水汽输送 水气通量散度 

分 类 号：P46[天文地球—大气科学及气象学]