A Statistical Linkage between Extreme Cold Wave Events in Southern China and Sea Ice Extent in the Barents-Kara Seas from 1289 to 2017  

作　　者：Cunde XIAO Qi ZHANG Jiao YANG Zhiheng DU Minghu DING Tingfeng DOU Binhe LUO 

机构地区：[1]State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China [2]State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,Beijing 100081,China [3]State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China [4]College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Advances in Atmospheric Sciences》2023年第12期2154-2168,共15页大气科学进展（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.42101142);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA19070103);the Young Elite Scientists Sponsorship Program by CAST(Grant No.2022QNRC001).

摘　　要：Arctic sea ice loss and the associated enhanced warming has been related to midlatitude weather and climate changes through modulate meridional temperature gradients linked to circulation. However, contrasting lines of evidence result in low confidence in the influence of Arctic warming on midlatitude climate. This study examines the additional perspectives that palaeoclimate evidence provides on the decadal relationship between autumn sea ice extent (SIE) in the Barents-Kara (B-K) Seas and extreme cold wave events (ECWEs) in southern China. Reconstruction of the winter Cold Index and SIE in the B-K Seas from 1289 to 2017 shows that a significant anti-phase relationship occurred during most periods of decreasing SIE, indicating that cold winters are more likely in low SIE years due to the “bridge” role of the North Atlantic Oscillation and Siberian High. It is confirmed that the recent increase in ECWEs in southern China is closely related to the sea ice decline in the B-K Seas. However, our results show that the linkage is unstable, especially in high SIE periods, and it is probably modulated by atmospheric internal variability.

关 键 词：extreme cold wave events sea ice Barents-Kara(B-K)Seas Arctic southern China 

分 类 号：P731.15[天文地球—海洋科学] P425.54