东亚季风和我国夏季雨带的关系  

The Relationship Between the Summer Rain Belt in China and the East Asia Monsoon

作　　者：赵汉光 张先恭[1] 

机构地区：[1]国家气候中心,中国气象科学研究院

出　　处：《气象》1996年第4期8-12,共5页Meteorological Monthly

摘　　要：利用１９５１—１９９４年每月平均海平面气压资料，计算了东亚地区季风强度指数。分析表明：东亚夏季风强弱与我国夏季雨带类型之间有着一定的联系。当夏季风强的年份，主要雨带分布在我国北方，而夏季风弱的年份，主要雨带分布在我国南方；夏季风为正常的年份，雨带分布一般在我国中部。分析发现：夏季季风的强弱与夏季风来临迟早还存在着联系。当夏季风来临早的年份，则夏季季风强度以偏强为主；反之夏季风来临迟的年份，则夏季季风强度以偏弱为主。这些结果将为预测夏季雨带类型提供有益的线索。ased on the monthly mean sea level pressure data during the years of 1951-1994,the East Asia summer monsoon intensity index has been suggested. The statistical results show that the variation of summer rain belt pattern relates closely to the strength of summer monsoon in the East Asia. It was found that when the strong monsoon years,the positive anomaly of precipitation would appear in the north China (Pattern Ⅰ rain belt),when the week monsoon years,the summer rain belt would appear in the south China (Pattern Ⅲ rain belt) ;when the normal monsoon years,the summer rain belt would appear in central China (Pattern Ⅱ rain belt). The onset time of summer monsoon in the East Asia is one of the factors affecting the strength of summer monsoon. The stronger summer monsoon is predominant when the summer monsoon established early in East Asia ion the contrary,the weaker summer monsoon is predominant. These results would be useful for the long range forecasting of rainfall anomaly pattern.

关 键 词：东亚 季风 雨带 类型 中国 

分 类 号：P425.42[天文地球—大气科学及气象学] P426.6