南海及邻近海域表层海温 (SST)异常的气候意义可以通过IAP AGCM的数值模拟得到反映。数值试验表明 ,东亚大气环流对这种SST异常的响应具有时变性 (或称季节性 ) ,在空间上维持一定的经向结构和纬向结构。确切地说 ,南海冷水年份 ,即南海和孟加拉湾负距平、西太平洋正距平的年份 ,2 ,3月份南海有东北风异常 ;夏季菲律宾附近维持一个反气旋式的差值环流 ,它的低频活动造成了这个地区降水场的低频振荡 ;与环流较一致的是夏季西太平洋副热带高压活动有所减弱、东移 ,造成了水汽经向输送的异常分布 The climatic implications of surface SST anomalies in the South China Sea and adjacent waters can be reflected by the numerical simulation of IAP AGCM. Numerical experiments show that the East Asian general circulation has a time-varying (or seasonal) response to this SST anomaly, and maintains some spatial structure of the meridional and latitudinal structures. Specifically, the years of cold water in the South China Sea, negative anomalies in the SCS and the Bay of Bengal and positive anomalies in the western Pacific Ocean, have an easterly anomaly in February and March in the South China Sea. In summer, an anti-cyclonic difference circulation is maintained near the Philippines, The activity caused the low-frequency oscillation of precipitation in this area. In line with the circulation, the anomalous distribution of summer subtropical high in the western Pacific subsided and moved eastward, resulting in the abnormal distribution of water vapor meridional transport