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  

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

作　　者：陈隽[1] 孙淑清[1] 

机构地区：[1]中国科学院大气物理研究所

出　　处：《大气科学》1999年第1期101-111,共11页Chinese Journal of Atmospheric Sciences

摘　　要：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。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

关 键 词：冬季风 全球 大气环流 持续异常 隔季相关 季风 

分 类 号：P425.42[天文地球—大气科学及气象学] P434