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根据太平洋（10°S-50°N，120°E-80°W）286个网格点1951-1986年逐月平均海温资料和同期西南地区34个站月平均降水资料1），利用交叉相关场EOF分解考察我国西南地区夏季降水与太平洋海温遥相关的结构;然后通过聚类对西南地区夏季降水分成两种基本型，分别对两种降水型对应的各季海温进行距平和复自然正交（CEOF）的合成分析。结果表明:太平洋中高纬地区和赤道东太平洋海温与我国西南四川、贵州等地存在明显的季节变化遥相关;两种降水型对应的海温异常分布，无论是距平结构还是振荡传播，均有明显的两类相反特征。
According to the monthly average SST data of 1951-1986 and the monthly average precipitation data of 34 stations in Southwest China during the same period of time (1), using 286 grid points in the Pacific Ocean (10 ° S-50 ° N, 120 ° E-80 ° W) Correlation field EOF decomposition is used to investigate the teleconnection structure between the summer precipitation in China’s southwest region and the Pacific SST. Based on the two basic types of summer precipitation in Southwest China, two types of precipitation corresponding to the two seasons are respectively anomalously and naturally Cross (CEOF) synthesis analysis. The results show that there is a clear seasonal variation in the SST in the mid-high latitudes of the Pacific Ocean and the equatorial Eastern Pacific, and the southwestern Sichuan and Guizhou provinces in China. There is an anomalous distribution of SST anomalies in both anomalies and anomalies There are obviously two types of opposite signatures.