近年来,海表温度在中长期天气预报上应用较广泛,为了使这项工作更引深一步;同时为了开发海洋资源和航运,做好海表温度预报的需要,对海温距平场变化的因子进行研究,具有重要的现实意义。 我们利用自然正交分解法,对北太平洋地区(纬度范围取10°S—50°N,见图1)1949—1975年共27年的月平均海洋表面温度距平场(下简称海温距平场)进行分解。这 In recent years, the sea surface temperature has been widely used in mid- and long-term weather forecasting in order to make this work one step further. Meanwhile, in order to develop marine resources and shipping, Of the factors to study, has important practical significance. We use the natural orthonormal decomposition method to study the average monthly surface temperature anomalies of the ocean surface in the North Pacific (latitude range 10 ° S-50 ° N, see Figure 1) from 1949 to 1975 for a total of 27 years Flat field) decomposition. This