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用EOF分析方法对北太平洋及赤道太平洋地区1949～1979年31年海表面温度距平场进行分解,得到几个主要距平海温模态(EOF1～3),分析了EOF1～3的时空分布特征。得到海温距平场的EOF1和EOF2～3模态分别对E1—Nino事件和黑潮大弯曲有很显著的相关性,指出SST第三模态场对黑潮大弯曲的影响具有很好的持续性,持续时间为1～2年。最后讨论了相互的影响过程,为黑潮大弯曲和E1—Nino事件的预报的可能性提供了依据。
The EOF analysis method was used to decompose the sea surface temperature anomalies over the 31 years from 1949 to 1979 in the North Pacific Ocean and the equatorial Pacific Ocean to obtain several major anomalous SOF patterns (EOF1 ~ 3). The spatial and temporal distribution of EOF1 ~ 3 feature. The EOF1 and EOF2 ~ 3 modalities of the SST anomalies have significant correlations with the E1-Nino event and the Kuroshio Curvature respectively. It is pointed out that the SST third mode field has a very good effect on the Kuroshio large bending Persistence, the duration of 1 to 2 years. Finally, the mutual influence process is discussed, which provides the basis for the possibility of forecasting the large Kuroshio curvature and E1-Nino event.