A Correlation Study Between SSTA Over The Winter Kuroshio Area And East Asian Circhlation And The Climate Of China In Summer

By using of EOF analysis, distribution of SST over the kuroshio area during winter are identified , which show cold or warm anomaly. Then by using of statistics and numerical simulation analysis, research abnormality of the main circulation system at following summer in East Asia, and the influence of the abnormality on the rainfall and temperature in summer in China, when SST over the kuroshio area during winter show cold or warm anomaly. As a result, we find that in winter when the kuroshio is cooler than the normal, at following summer, the continental cyclone deepen and the East Asia monsoon strengthen , that the mid-latitude blocking high weaken and zonal circulation develop, the East Asia teleconnection of"-+-" is stired up, so that subtropical high weaken and diminish, and tend to east\north, tropical monsoon trough strengthen and mei-yu front weaken, and tend to north, meanwhile South Asia high weaken and diminish, and tend to eastVnorth, is easy to form eastern region type. The above circulation structure cause that rain belt tend to north in summer in China, rainfall of the Yellow River valley and North China become more, but rainfall of south to the Yellow River and Yangtze River valley become less, meanwhile temperature of Northwest and central region become high, but temperature of south department foreland become low. In winter when the kuroshio is wormer than the normal, the situation is different.