冬季黑潮区SST异常和东亚夏季风的相关研究

通过EOF分析确定冬季黑潮区SST的主要分布形势，然后用SVD方法揭示了东亚夏季风异常与冬季黑潮区SST异常的最佳耦合模态。结果发现，冬季黑潮区SST全区变化较一致，表现为均匀的冷暖分布，当黑潮区SST冷异常时，后期夏季热带季风槽增强，梅雨锋减弱，热带季风环流圈加强；东亚夏季风中的西南气流盛行，东南气流的强度增强但范围减小，北风减弱。暖异常时则相反。

Correlation between Winter SSTA over the Kuroshio Area and East Asian Summer Monsooon

The principal patterns of winter SST over the Kuroshio area are identified by use of EOF analysis. Then, the optimum coupling modes of East Asian summer monsoon anomaly and winter SSTA over the Kuroshio area are disclosed by SVD method. The EOF modes of winter SST show relatively consistent cold or warm anomaly distributions over the whole Kuroshio area. When the Kuroshio in winter is colder than normal,the tropical monsoon trough tends to strengthen and the Meiyu front tends to weaken,and the trop- ical monsoon circulation cell becomes strong in the following summer;and the southwest flow prevails over East Asia, the indensity of southeast flow is stronger but its range is smaller than normal, and the north flow becomes weak. In winter when the Kuroshio SST is warmer than normal,the situation is opposite.