Causes of a Typical Southern Flood and Northern Drought Event in 2015 over Eastern China

作     者：Zhuoyuan LI Qing YANG Dian YUAN Er LU Zhuguo MA Zhuoyuan LI;Qing YANG;Dian YUAN;Er LU;Zhuguo MA

作者机构：Key Laboratory of Meteorological DisasterMinistry of Education(KLME)Joint International Research Laboratory of Climate and Environment Change(ILCEC)Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Regional Climate-Environment Research for Temperate East AsiaInstitute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of SciencesBeijing 100049China Xiongan Institute of InnovationChinese Academy of SciencesXiongan New Area 071800China 

出 版 物：《Advances in Atmospheric Sciences》 (大气科学进展（英文版）)

年 卷 期：2023年第40卷第11期

页      面：2092-2107,I0014,I0015页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：sponsored by the National Natural Science Foundation of China(Grant Nos.41991281,42130613 and 41705073) the UK-China Research and Innovation Partnership Fund through the Met Office Climate Science for Service Partnership(CSSP)China as part of the Newton Fund the Jiangsu Collaborative Innovation Center for Climate Change 

主　　题：drought flood El Niño atmospheric teleconnection sea surface temperature anomaly 

摘      要：The spatial distribution of summer precipitation anomalies over eastern China often shows a dipole pattern,with anti-phased precipitation anomalies between southern China and northern China,known as the“southern flooding and northern drought(SF-ND)*** 2015,China experienced heavy rainfall in the south and the worst drought since 1979 in the north,which caused huge social and economic *** reanalysis data,the atmospheric circulation anomalies and possible mechanisms related to the summer precipitation anomalies in 2015 were *** results showed that both El Niño and certain atmospheric teleconnections,including the Pacific Japan/East Asia Pacific(PJ/EAP),Eurasia pattern(EU),British–Baikal Corridor pattern(BBC),and Silk Road mode(SR),contributed to the dipole pattern of precipitation *** combination of these factors caused a southwards shift of the western Pacific subtropical high(WPSH)and a weakening of the East Asian summer ***,it was difficult for the monsoon front and associated rain band to migrate northwards,which meant that less precipitation occurred in northern China while more precipitation occurred in southern *** resulted in the SF-ND ***,further analysis revealed that global sea surface temperature anomalies(SSTAs)or sea-ice anomalies were key to stimulating these atmospheric teleconnections.