An Interdecadal Change of Summer Atmospheric Circulation over Asian Mid-High Latitudes and Associated Effects  

作　　者：ZHOU Chang-yan LI Di REN Qian QI Dong-mei 周长艳;李笛;任倩;齐冬梅(Institute of Plateau Meteorology,China Meteorological Administration/Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province,Chengdu 610072 China)

机构地区：[1]Institute of Plateau Meteorology,China Meteorological Administration/Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province,Chengdu 610072 China

出　　处：《Journal of Tropical Meteorology》2020年第3期363-376,共14页热带气象学报（英文版）

基　　金：Innovation Team Project by Institute of Plateau Meteorology,China Meteorological Administration,Chengdu(BROP202043);National Natural Science Foundation of China(41775084);Key Special Projects of National Key R&D Program of China(2018YFC1505706)。

摘　　要：The atmospheric circulation over the mid-high latitudes in Asia has an important influence on regional climate,yet its long-term variation has not been fully explored.The main task of this study is to reveal the interdecadal variation features of summer atmospheric circulation over Asian mid-high latitudes in recent decades.The results show that the atmospheric circulation over mid-high latitudes of Asia has stronger interdecadal fluctuations than that over low latitudes and one significant change center appears near Lake Baikal.It is found that the atmospheric circulation near Lake Baikal has a significant interdecadal change around 1996 and a deep anomalous anticyclonic circulation has been controlling this region since then,which contributes to the significant increase in the surface temperature near Lake Baikal since 1997 and makes the region a remarkable warming center in Asia in recent 40 years.During 1997-2015,the pattern of less precipitation in the north and more precipitation in the south of east China is closely related to the anomalous anticyclonic circulation near Lake Baikal.Especially,this anomalous circulation near Lake Baikal has been found to contribute to the obvious interdecadal decrease of the precipitation in northeast China and north China near1997.The sea surface temperature(SST)of northwestern Atlantic is an important influence factor to the interdecadal change in the atmospheric circulation near Lake Baikal around 1996.

关 键 词：Asian mid-high latitudes interdecadal change effect Atlantic SST 

分 类 号：P466[天文地球—大气科学及气象学]