Impact of global warming on the East Asian winter monsoon as revealed by nine coupled atmosphere-ocean GCMs
Impact of global warming on the East Asian winter monsoon as revealed by nine coupled atmosphere-ocean GCMs
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DOI：
10.1029/2005gl024961
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发表时间：
2006-02-11
影响因子：
5.2
通讯作者：
Ueda, H
中科院分区：
文献类型：
--
作者：
Hori, ME;Ueda, H
利用9种大气-海洋环流模式（AOGCMs）研究了全球变暖对东亚冬季风的影响。模式大多能成功模拟季风西北风位置不同的东亚季风环流的基本特征。在全球变暖情景下，大多数模式显示EAWM的减弱伴随着北太平洋上空强烈的反气旋异常，对应于阿留申低压（AL）的减弱和/或北移。海平面气压（SLP）的响应也显示出AL和西伯利亚高压（SH）的减弱，这导致欧亚大陆东部沿海的气压梯度减弱。除其他因素外，热带局地哈德利环流的减弱大大减弱了东亚急流（EAJ）和由此产生的EAWM。
Impact of global warming on the East Asian Winter Monsoon (EAWM) is studied using nine coupled atmosphere-ocean general circulation models (AOGCMs). Models are mostly successful in simulating the basic features of the EAWM with varied location of monsoon northwesterlies ( NW). Under the global warming scenario, most models show a weakening of the EAWM accompanied by a strong anticyclonic anomaly over the North Pacific corresponding to a weakened and/or the northern shift of the Aleutian Low (AL). Response in Sea Level Pressure (SLP) also shows the weakening of both the AL and the Siberian High (SH), which gives rise to a weakened pressure gradient along the eastern coast of the Eurasian continent. Among other factors, weakening of the tropical local Hadley circulation was found to substantially weaken the East Asian Jet (EAJ) and the resultant EAWM.