东亚冬季风异常与全球大气环流变化 I. 强弱冬季风影响的对比研究

利用ECMWF资料挑选出一个强冬季风年（1986年）和一个弱冬季风年（1980年），通过个例分析对各种气象要素场及中高纬度大尺度环流在强弱冬季风年的差异特征进行比较。分析结果表明：东亚冬季风是全球大气环流的一个重要组成部分，冬季风异常关联着全球环流的异常；这种异常不仅在中高纬度环流中表现出来，而且在热带地区大尺度流场上也尤为显著。强弱冬季风所对应的长波槽脊分布、低纬对流特征、三维流场结构都是截然不同的。冬季风异常不但造成了同期环流形势的差异，而且对后期环流和天气状况也有影响。

Eastern Asian Winter Monsoon Anomaly and Variation of Global CirculationPart. I: A Comparison Study on Strong and Weak Winter Monsoon

By using the ECMWF data, a strong winter monsoon year (1986) and a weak one (1980) are chosen for case study, and their difference of many characteristics both on the local and global circulations is compared The main results are as follows The East Asian Winter Monsoon is an important component of the global circulation and its anomaly is relevant to the variation of global circulation especially to the tropical circulations Winter monsoon anomaly not only results in the difference of the circulation in winter, but also affects the circulation and weather in the following seasons Most important is the persistence of the anomalous circulation and the characteristics caused by the anomalous winter monsoon over tropical region, including the convection, Hadley and Walker cells, which maintains from winter to summer