本文采用复经验正交函数(CEOF)对热带西太平洋1951—1986年的月平均表层水温距平进行了分析,结果发现,这一区域的水温异常包括准静止型、经向传播型和纬向传播型三个主要模态(mode),它们对总方差的贡献具有同等重要性,平均为15.5%。本文还用数字滤波和滞时相关等方法分析了各模态的准周期振荡及其与南方涛动、西太平洋副热带高压之间的相关关系。 In this paper, the monthly average surface water temperature anomaly in the tropical western Pacific from 1951 to 1986 was analyzed by the complex empirical orthogonal function (CEOF). The results showed that the anomaly of water temperature in this region includes quasi-static type, meridional type and latitudinal direction Propagation three main modes, their contribution to the total variance are of equal importance, with an average of 15.5%. In this paper, we also analyze the relationship between the quasi-periodic oscillations of each mode and its correlation with the Southern Oscillation and the Western Pacific Subtropical High by means of digital filtering and hysteresis correlation.