Change in Sea Ice Cover is Responsible for Non-Uniform Variation in Winter Temperature over East Asia

作     者：LI Fei WANG Hui-Jun GAO Yong-Qi 

作者机构：Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of Sciences Climate Change Research Center Chinese Academy of Sciences Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University for Information Science and Technology Nansen Environmental and Remote Sensing Center and Bjerknes Centre for Climate Research 

出 版 物：《Atmospheric and Oceanic Science Letters》 (大气和海洋科学快报（英文版）)

年 卷 期：2015年第8卷第6期

页      面：376-382页

核心收录：

学科分类：0710[理学-生物学] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 070601[理学-气象学] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the Public Science and Technology Research Funds Projects of Ocean(No.201205007) the National Natural Science Foundation of China(Grant Nos.41421004 and 41130103) the Special Fund for Public Welfare Industry(Meteorology)(Grant No.GYHY2013-06026) the Nord Forsk-funded project GREENICE(No.61841):Impacts of Sea-Ice and Snow-Cover Changes on Climate,Green Growth,and Society 

主　　题：East Asia winter temperature Arctic sea ice cover 

摘      要：Observed winter(December–February)surface air temperature over East Asia(0°–60°N,100–140°E)(TEA)shows non-uniform variation during 1979–2013,with cooling and weak warming north and south of40°*** understand this,the authors perform statistical analysis(linear regression and composite)on the observed *** results suggest that reduced(increased)autumn sea ice cover in the Barents-Kara Sea(BK-ASIC)lowers(warms)TEA over northern East Asia,which is consistent with previous *** comparison,increased(decreased)winter sea ice cover in the Sea of Okhotsk(O-WSIC),warms(cools)the air over southern East *** mechanism can be described as follows:When the BK-ASIC decreases,the East Asian winter monsoon tends to be stronger with an intensified Siberian high,leading to cooling over northern East *** O-WSIC increase is associated with cold anomalies north of 50°N,altering the meridional temperature gradient between the midlatitudes and tropics,and leading to a northward shift of the East Asian jet steam in the upper *** the low atmosphere,anomalous northeasterly winds prevail north of50°N and anomalous southerly winds control the southern coast of East Asia,contributing to the weak warming over southern East *** 3 of the Community Atmosphere Model also provides evidence for the impact of increased O-WSIC on the warm southern mode of TEA.