Boreal summer convection oscillation over the Indo‐Western Pacific and its relationship with the East Asian summer monsoon
Boreal summer convection oscillation over the Indo‐Western Pacific and its relationship with the East Asian summer monsoon
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DOI：
10.1002/asl2.418
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发表时间：
2013-04
影响因子：
3
通讯作者：
Yanjie Li;Jianping Li;Juan Feng
中科院分区：
文献类型：
--
作者：
Yanjie Li;Jianping Li;Juan Feng
统计分析表明，北半球夏季印度洋-太平洋对流振荡（IPCO）存在准两年变率，与东亚夏季风（EASM）有密切关系。IPCO的负位相表现为北印度洋对流增强，西北太平洋对流减弱，在乌拉尔山阻塞高压和鄂霍次克海阻塞高压以及西太平洋副热带高压的共同作用下，东亚夏季风减弱，长江流域夏季降水增多，反之亦然。皇家气象学会
Statistical analysis shows that the Indo‐Pacific convection oscillation (IPCO) in boreal summer undergoes quasi‐biennial variability, and is closely related to the East Asian summer monsoon (EASM). Negative IPCO phases, which exhibit an enhanced convection over the north Indian Ocean and a suppressed convection over the western North Pacific, favor a weakened EASM and an increase of summer rainfall in the Yangtze River valley with the joint actions of the stronger than normal Ural and Okhotsk blocking highs and the subtropical western Pacific high, and vice versa. Copyright © 2013 Royal Meteorological Society