Abstract
Using Hadley Centre Sea Sea Surface Temperature data in the North Pacific region (0°N~60°N, 120°E~80°W) from 1950 to 2017, based on Empirical orthogonal function(EOF) analysis, the multi-year spatio-temporal field of SST in the North Pacific Ocean in summer into three main modes is decomposed into three modes. The temporal and spatial variation characteristics of SST in the North Pacific summer (June to August) are discussed in detail. The results show that the spatial distribution and time series of the first mode can reflect ENSO signal well. Compared with the first mode, the spatial field of the second mode has an inverse phase distribution. The spatial field distribution of the third mode is similar to the zonal distribution, and the whole sea area presents an oscillating structure of alternating cold and warm regions from south to north.
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