The combined effects of North Atlantic Oscillation and Western Pacific teleconnection on winter temperature in Eastern Asia during 1980−2021

作     者：Ziqun Zhang Hongyan Cui Baoxu Chen Hong Cai Pin Li Ziqun Zhang;Hongyan Cui;Baoxu Chen;Hong Cai;Pin Li

作者机构：College of Mathematics and PhysicsQingdao University of Science and TechnologyQingdao 266061China The First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China Research Institute for Mathematics and Interdisciplinary SciencesQingdao University of Science and TechnologyQingdao 266061China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2023年第42卷第10期

页      面：1-9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：The National Key Research and Development Program of China under contract No.2022YFE0140500 the National Natural Science Foundation of China under contract Nos 41821004 and 42130406 the National Natural Science Foundation of China-Shandong Joint Fund under contract No.U1906215 the Open Fund of Key Laboratory of Ocean Circulation and Waves,Chinese Academy of Sciences under contract No.KLOCW2003 the Project of Doctoral Found of Qingdao University of Science and Technology under contract No.210010022746 

主　　题：North Atlantic Oscillation(NAO) Western Pacific teleconnection(WP) winter temperature combined effect Eastern Asia 

摘      要：As important atmospheric circulation patterns in Northern Hemisphere(NH),the North Atlantic Oscillation(NAO)and the Western Pacific teleconnection(WP)affect the winter climate in *** order to explore the combined effects of NAO and WP on East Asian(EA)temperature,the NAO and WP indices are divided into four phases from 1980−2021:the positive NAO and WP phase(NAO+/WP+),the negative NAO and WP phase(NAO−/WP−),the positive NAO and negative WP phase(NAO+/WP−),the negative NAO and positive WP phase(NAO−/WP+).In the phase of NAO+/WP+,the low geopotential height(GH)stays in north of EA at 50°−80°N;the surface air temperature anomaly(SATA)is 0.8−1℃lower than Southern *** the phase of NAO−/WP−,the center of high temperature and GH locate in the northeast of EA;the cold air spreads to Southern Asia,causing the SATA decreases 1−1.5℃.In the phase of NAO+/WP−,the high GH belt is formed at 55°−80°***,the center of high SATA locates in the north of Asia that increases 0.8−1.1℃.The cold airflow causes temperature dropping 0.5−1℃in the south of *** SATA improves 0.5−1.5℃in south of EA in the phase of NAO−/WP+.The belt of high GH is formed at 25°−50°N,and blocks the cold air which from *** NAO and WP generate two warped plate pressure structures in NH,and affect the temperature by different pressure *** and WP form different GH,and GH acts to block and push airflow by affecting the air pressure,then causes the temperature to be different from the north and south of ***,the multiple linear regression result shows that NAO and WP are weakened by each other such as the phase of NAO+/WP+and NAO−/WP−.