Connection of summer rainfall variations in South and East Asia: role of El Niño–southern oscillation
Connection of summer rainfall variations in South and East Asia: role of El Niño–southern oscillation
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DOI：
10.1002/joc.1159
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发表时间：
2005-07
期刊：
影响因子：
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通讯作者：
Zeng‐Zhen Hu;R. Wu;J. Kinter;Song Yang
中科院分区：
文献类型：
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作者：
Zeng‐Zhen Hu;R. Wu;J. Kinter;Song Yang
我们通过将印度夏季季风降雨指数分为两部分：一部分与ENSO相关，另一部分与ENSO无关，研究了厄尔尼诺和南方涛动（ENSO）对南亚和东亚夏季降雨变化在年际时间尺度上的联系的作用。 ENSO相关部分与中国北部（日本南部）的降水变化显着正（负）相关。 ENSO无关部分与西南地区降水变化存在显着负相关。 ENSO 的发生通常强化了南亚夏季风与东亚夏季降水变化之间的联系。 ENSO相关部分通过两种经向传播遥相关模式影响东亚夏季降水变化：一种在东亚大陆，另一种在西太平洋。与 ENSO 无关的部分通过亚洲大陆中纬度地区的纬向传播模式与东亚降雨变化联系起来。版权所有 © 2005 英国皇家气象学会
We have investigated the role of El Niño and the southern oscillation (ENSO) on the connection between summer rainfall variations in South and East Asia on interannual time scales by separating an Indian summer monsoon rainfall index into two parts: one part ENSO related and the other ENSO unrelated. The ENSO‐related part is significantly positively (negatively) correlated with the rainfall variations in northern China (southern Japan). The ENSO‐unrelated part has significant negative correlations with the rainfall variations in southwestern China. The occurrence of ENSO generally reinforces the connection between the South Asian summer monsoon and East Asian summer rainfall variations. The ENSO‐related part affects East Asian summer rainfall variations through two meridional propagation teleconnection patterns: one over the East Asian continent and the other over the western Pacific Ocean. The ENSO‐unrelated part connects with East Asian rainfall variations by a zonal propagation pattern over mid‐latitudes in the Asian continent. Copyright © 2005 Royal Meteorological Society