首页 | 官方网站   微博 | 高级检索  
     

来自印度季风区的水汽输送与东亚上空水汽输送和中国夏季降水的关系
作者姓名:Zhang  Renhe
作者单位:Zhang Renhe LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100080
基金项目:This work is supported by the China National Key Program for Developing Basic Sciences (G1998040900, Part 1) and NSFC Excellent
摘    要:诊断分析了北半球夏季来自印度季风的水汽输送与东亚上空水汽输送的关系,发现二者之间具有反相变化的特征。印度季风水汽输送偏强(偏弱)时,东亚上空的水汽输送偏弱(偏强),长江中下游降水偏少(偏多)。印度夏季风水汽输送与西太平洋副热带高压强度有显著的相关关系,印度季风水汽输送偏强(偏弱)时,西太平洋副热带高压强度偏弱(偏强),由此导致副高西侧东亚上空向北的水汽输送减弱(增强),使得长江中下游降水偏少(偏多)。对反映热带对流活动的外逸长波辐射(OLR)的分析表明,印度洋上空的对流加热异常不仅能够显著地影响印度季风,也可能对东亚季风产生直接的影响。

关 键 词:水汽输送  印度季风  东亚季风

Relations of Water Vapor Transport from Indian Monsoon with That over East Asia and the Summer Rainfall in China
Zhang Renhe.Relations of Water Vapor Transport from Indian Monsoon with That over East Asia and the Summer Rainfall in China[J].Advances in Atmospheric Sciences,2001,18(5):1005-1017.
Authors:Zhang Renhe
Affiliation:LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100080
Abstract:A diagnostic study is made to investigate the relationship between water vapor transport from Indian monsoon and that over East Asia in Northern summer. It is found that water vapor transport from Indian monsoon is inverse to that over East Asia. More (less) Indian monsoon water vapor transport corresponds to less (more) water vapor transport over East Asia and less (more) rainfall in the middle and lower reaches of the Yangtze River valley. The Indian summer monsoon water vapor transport is closely related to the in tensity of the western Pacific subtropical high in its southwestern part. The stronger (weaker) the Indian sum mer monsoon water vapor transport, the weaker (stronger) the western Pacific subtropical high in its southwestern part, which leads to less (more) water vapor transport to East Asia, and thus less (more) rain fall in the middle and lower reaches of the Yangtze River valley. Analysis of the out-going longwave radia tion anomalies suggests that the convective heating anomalies over the Indian Ocean may have significant impact not only on the Indian monsoon, but also on the East Asian monsoon.
Keywords:Water vapor transport  Indian monsoon  East Asian monsoon
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《大气科学进展》浏览原始摘要信息
点击此处可从《大气科学进展》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号