A Possible Abrupt Change in Summer Precipitation over Eastern China around 2009

查看全文 作　　者：Yongjian [1,2,3]REN;Lianchun [2]SONG;Zunya [2]WANG;Ying [3]XIAO;Bing [2]ZHOU

机构地区：[1]College of Atmospheric Science,Nanjing University of Information Science & Technology;[2]National Climate Center,China Meteorological Administration;[3]Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research,Institute of Heavy Rain,China Meteorological Administration

出　　处：《Journal of Meteorological Research》索引2017年第31卷第2期,共12页

基　　金：Supported by the National(Key)Basic Research and Development(973)Program of China(2015CB953904 and 2012CB955900);National Natural Science Foundation of China(41405077) 摘　　要：Historical studies have shown that summer rainfall in eastern China undergoes decadal variations,with three apparent changes in the late 1970s,1992,and the late 1990s.The present observational study indicates that summer precipitation over eastern China likely underwent a change in the late 2000s,during which the main spatial pattern changed from negative–positive–negative to positive–negative in the meridional direction.This change in summer precipitation over eastern China may have been associated with circulation anomalies in the middle/upper troposphere.A strong trough over Lake Baikal created a southward flow of cold air during 2009–15,compared with 1999–2008,while the westward recession of the western Pacific subtropical high strengthened the moisture transport to the north,creating conditions that were conducive for more rainfall in the north during this period.The phase shift of the Pacific Decadal Oscillation in the late 2000s led to the Pacific–Japan-type teleconnection wave train shifting from negative to positive phases,resulting in varied summer precipitation over eastern China. 关键词：夏季降水中国东部太平洋年代际振荡西太平洋副高年代际变化突变遥相关波列空间格局

相关文献

参考文献（37）
引证文献（0）
耦合文献（577）

参考文献(37)

耦合文献(577)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

A Possible Abrupt Change in Summer Precipitation over Eastern China around 2009

参考文献(37)

耦合文献(577)

用户提示