The extremely cold 2009-2010 winter and its relationship with the Arctic oscillation

作     者：Xin-Yu Wen Yong-Yun Hu Ji-Ping Liu 

作者机构：Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic Sciences School of Physics Peking University Beijing 100871 China 2Department of Atmospheric and Environmental Sciences University at Albany State University of New York NY 12222 USA 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2013年第8卷第5期

页      面：590-603页

核心收录：

学科分类：0810[工学-信息与通信工程] 07[理学] 070601[理学-气象学] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0706[理学-大气科学] 0835[工学-软件工程] 081002[工学-信号与信息处理] 

基　　金：国家973计划 国家自然科学基金 J. Liu was supported by NSF Polar Programs 

主　　题：Arctic oscillation Northern-Hemisphere Annular mode (NAM) stratosphere planetarywaves weather forecast 

摘      要：The Northern-Hemisphere high-latitude continents experienced extremely cold weathers in winter 2009 2010. In the present paper, we show that the cold winter was associated with the activity of tile Arctic oscillation （AO）, which demonstrated the strongest negative polarity over the past six decades and persisted from December, 2009 to March, 2010. It is found that variations of the surface AO was closely linked to stratospheric polar vortex anomalies, and that the surface AO phases followed downward propagation of stratospheric Northern-Hemisphere Annular mode （NAM） anomalies during the winter. The case of 2009-2010 winter provides us with a typical example that anomalous stratospheric signals can be used to improve skills of long-range weather forecast and intra-seasonal climate prediction in winter time. We also show that the E1 Nifio event, which started developing from May 2009, might contribute the formation of exceptionally negative and persistent AO and stratospheric NAM, particularly over North Pacific and North America.