Abstract:By using NCEP GODAS monthly sea surface height(SSH) and 160-station monthly precipitation data in China, the seasonal and interannual characteristics of SSH are analyzed over the tropical Pacific, along with the correlation relationships between SSH and summer rainfall discussed.The results show that:1) The tropical Pacific SSH takes on "V" pattern in the climatic field on the whole, it is higher in the western part than in the eastern part, and higher in the northwest part than in the southwestern part.The high value area is more stable in the northwest, the value(greater than 0.8 m) range is larger in spring and summer than in autumn and winter.The high value area in the southwestern part is largest (smallest) and northerly(southerly) in spring(summer).The SSH is higher in spring and autumn than in summer and winter over the equatorial zone.2) The SSH interannual anomalies are strongest over the tropical western and southwest Pacific, and stronger in winter and spring than in summer and autumn.The interannual anomalies are also strong over the equatorial middle and eastern Pacific, which are stronger in the autumn and winter and are unusual of the greater intensity and scope.There is closely relationship between the SSH interannual anomaly and ENSO events in the autumn, winter and spring.3) When ENSO event takes place in the winter, according to the simultaneous relationship between the tropic Pacific SSH and the summer precipitation of China, it can be predicted that the precipitation will significantly be more than normal value over the south of the Yangtze River, especially Dongting Lake and Poyang Lake region, eastern Qinghai-Tibet Plateau, Yangtze-Huai River Valley, eastern part of Neimen, while less than normal over the He Tao area, the North China and the South China in the coming year summer.