Extended Impact of Cold Air Invasions in East Asia in Response to a Warm South China Sea and Philippine Sea  

作　　者：Marco Y.-T.LEUNG Dongxiao WANG Wen ZHOU Yuntao JIAN 

机构地区：[1]School of Marine Sciences,Sun Yat-Sen University,Zhuhai 519082,China [2]Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519000,China [3]Department of Atmospheric and Oceanic Sciences&Institute of Atmospheric Sciences,Fudan University,Shanghai 200438,China [4]Guy Carpenter Asia-Pacific Climate Impact Centre,Center for Ocean Research in Hong Kong and Macao(CORE),School of Energy and Environment,City University of Hong Kong,Hong Kong,China

出　　处：《Advances in Atmospheric Sciences》2023年第3期531-540,共10页大气科学进展（英文版）

基　　金：jointly supported by the National Natural Science Foundation of China (Grant Nos. 42120104001, 41805042);the Science and Technology Program of Guangzhou, China (Grant No. 202102020939);the Fundamental Research Funds for the Central University, Sun Yat-Sen University (Grant No. 22qntd2202);a project of the Center for Ocean Research in Hong Kong and Macao (CORE)

摘　　要：During boreal winter,the invasion of cold air can lead to remarkable temperature drops in East Asia which can result in serious socioeconomic impacts.Here,we find that the intensity of strong synoptic cold days in the East China Sea and Indochina Peninsula are increasing.The enhanced synoptic cold days in these two regions are attributed to surface warming over the South China Sea and Philippine Sea(SCSPS).The oceanic forcing of the SCSPS on the synoptic cold days in the two regions is verified by numerical simulation.The warming of the SCSPS enhances the baroclinicity,which intensifies meridional wind and cold advection on synoptic timescales.This leads to a more extended region that is subject to the influence of cold invasion.

关 键 词：ocean warming extra-tropical cyclones BAROCLINICITY temperature whiplash 

分 类 号：P46[天文地球—大气科学及气象学]