North Atlantic forcing of autumn drought in Southwest China

被引：0
|
作者：
Chaoxia Yuan [1 ]
Wei Zhang [1 ]
Yahan Zhong [2 ]
Xinyu Lu [1 ]
Jingchan Liu [1 ]
Md Wahiduzzaman [1 ]
机构：
[1] Key Laboratory of Meteorological Disaster of Ministry of Education,Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Institute for Climate and Application Research (ICAR),Nanjing University of Information Science and Te
[2] Yunnan Institute of Meteorological Science
来源：
Atmospheric and Oceanic Science Letters | 2022年 / 15卷 / 01期
基金：
中国国家自然科学基金;
关键词：
秋季干旱; 西南地区; 北大西洋海温; 遥相关;
D O I：
暂无
中图分类号：
P426.616 [降水引起的灾害]; P731.11 [温度];
学科分类号：
0706 ; 070601 ; 0707 ;
摘要：
干旱持续时间长,因此往往和缓慢变化的海温异常相关.本文利用观测降水和NCEP-DOE再分析资料,探讨了北大西洋中高纬地区东北-西南走向的偶极子海温异常对我国西南地区秋季干旱的影响.结果显示该偶极子海温异常可激发向东南方向传播的Rossby波,在印度北部和青藏高原西部引起正压气旋性环流和上升运动异常,并在我国西南地区引起补偿性下沉运动,导致降水减少,引发干旱.
引用
收藏
页码：78 / 82
页数：5
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