气象科学2017，Vol.37Issue(4)：450-457,8.DOI:10.3969/2016jms.0023
中国东部地区夏季降水和环流的年代际转型及其与PDO的联系
The interdecadal shift of summer precipitation and atmospheric circulation over East China and its relationship with PDO
摘要
Abstract
By using the monthly precipitation data from 160 observational stations of China during 1951-2013,the monthly mean NCEP/NCAR reanalysis data and global monthly mean Sea Surface Temperature (SST) data from NOAA,the interdecadal shift and related atmospheric circulation variation of summer precipitation over eastern China were investigated.Results show that the Pacific Decadal Oscillation (PDO) had two interdecadal shifts in the mid and late 1970s and the late 1990s.The former one caused the further weakening of East Asia Summer Monsoon (EASM) and the southwarding moving to the middle and lower reaches of Yangtze Rive of summer rain belt.On the contrary,the latter one led to the recovery of EASM,so that the summer rain belt can be moved northward to the reaches of Huai River.The further study finds that the atmospheric circulation of East Asia has changed dramatically after the PDO shift in the late 1990s,moreover,the wanning over Lake Baikal and the eastward and northward moving of West Pacific Subtropical High (WPSH) are the possible causes for the interdecadal precipitation change.关键词
夏季降水/年代际气候转型/1990s后期Key words
Summer precipitation/Interdecadal climate shift/The late 1990s分类
天文与地球科学引用本文复制引用
程乘,朱益民,丁黄兴,于斌,马孝通..中国东部地区夏季降水和环流的年代际转型及其与PDO的联系[J].气象科学,2017,37(4):450-457,8.基金项目
公益性行业(气象)科研专项(GYHY201106017) （气象）
国家自然科学基金(41330420) （41330420）
