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欧亚大陆冬季温度对北极海冰减少的敏感性及非线性响应研究
引用本文:隋翠娟,张占海,于乐江,李熠,宋米荣.欧亚大陆冬季温度对北极海冰减少的敏感性及非线性响应研究[J].海洋学报(英文版),2017,36(8):52-58.
作者姓名:隋翠娟  张占海  于乐江  李熠  宋米荣
作者单位:中国海洋大学海洋环境学院, 青岛, 266100, 中国;国家海洋环境预报中心, 北京, 100081, 中国,中国海洋大学海洋环境学院, 青岛, 266100, 中国,中国极地研究中心, 上海, 200129, China, 中国,国家海洋环境预报中心, 北京, 100081, 中国,中国科学院大气物理研究所, 北京, 100029, 中国
基金项目:The Chinese Polar Environment Comprehensive Investigation and Evaluation Programmes under contract No. CHINARE2016-04-04; the Public Science and Technology Research Funds Projects of Ocean under contract No. 201505013; the National Natural Science Foundation of China (NSFC) under contract No. 41576029.
摘    要:The recent decline in the Arctic sea ice has coincided with more cold winters in Eurasia.It has been hypothesized that the Arctic sea ice loss is causing more mid-latitude cold extremes and cold winters,yet there is lack of consensus in modeling studies on the impact of Arctic sea ice loss.Here we conducted modeling experiments with Community Atmosphere Model Version 5(CAM5) to investigate the sensitivity and linearity of Eurasian winter temperature response to the Atlantic sector and Pacific sector of the Arctic sea ice loss.Our experiments indicate that the Arctic sea ice reduction can significantly affect the atmospheric circulation by strengthening the Siberian High,exciting the stationary Rossby wave train,and weakening the polar jet stream,which in turn induce the cooling in Eurasia.The temperature decreases by more than 1°C in response to the ice loss in the Atlantic sector and the cooling is less and more shifts southward in response to the ice loss in the Pacific sector.More interestingly,sea ice loss in the Atlantic and Pacific sectors together barely induces cold temperatures in Eurasia,suggesting the nonlinearity of the atmospheric response to the Arctic sea ice loss.

关 键 词:冷冬  CAM5  敏感性试验  急流
收稿时间:2016/6/12 0:00:00

Sensitivity and nonlinearity of Eurasian winter temperature response to recent Arctic sea ice loss
SUI Cuijuan,ZHANG Zhanhai,YU Lejiang,LI Yi and SONG Mirong.Sensitivity and nonlinearity of Eurasian winter temperature response to recent Arctic sea ice loss[J].Acta Oceanologica Sinica,2017,36(8):52-58.
Authors:SUI Cuijuan  ZHANG Zhanhai  YU Lejiang  LI Yi and SONG Mirong
Institution:1.College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China;National Marine Environmental Forecasting Center, Beijing 100081, China2.College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China3.Polar Research Institute of China, Shanghai 200129, China4.National Marine Environmental Forecasting Center, Beijing 100081, China5.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
Abstract:The recent decline in the Arctic sea ice has coincided with more cold winters in Eurasia. It has been hypothesized that the Arctic sea ice loss is causing more mid-latitude cold extremes and cold winters, yet there is lack of consensus in modeling studies on the impact of Arctic sea ice loss. Here we conducted modeling experiments with Community Atmosphere Model Version 5 (CAM5) to investigate the sensitivity and linearity of Eurasian winter temperature response to the Atlantic sector and Pacific sector of the Arctic sea ice loss. Our experiments indicate that the Arctic sea ice reduction can significantly affect the atmospheric circulation by strengthening the Siberian High, exciting the stationary Rossby wave train, and weakening the polar jet stream, which in turn induce the cooling in Eurasia. The temperature decreases by more than 1°C in response to the ice loss in the Atlantic sector and the cooling is less and more shifts southward in response to the ice loss in the Pacific sector. More interestingly, sea ice loss in the Atlantic and Pacific sectors together barely induces cold temperatures in Eurasia, suggesting the nonlinearity of the atmospheric response to the Arctic sea ice loss.
Keywords:cold winter  CAM5  sensitivity experiment  jet stream
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