Severe winter weather as a response to the lowest Arctic sea-ice anomalies  

作　　者：CHEN Hongxia LIU Na ZHANG Zhanhai 

机构地区：[1]Key Laboratory of Marine Science and Numerical Modeling,First Institute of Oceanography,State Oceanic Administration [2]Key Laboratory for Polar Science,Polar Research Institute of China,State Oceanic Administration

出　　处：《Acta Oceanologica Sinica》2013年第10期11-15,共5页海洋学报（英文版）

基　　金：The National Natural Science Foundation of China under contract No.40930848;the National High Technology Reseach and Development Program of China under contract No.2010CB950301;Public Science and Technology Funds Projects of Ocean under contract No.201205007-7;National Key Technology R&D Program under contract No.2011BAC03B02-03-03;Chinese Polar Environment Comprehensive Investigation and Assessment Programes under contract Nos CHINARE2013-03-01 and CHINARE2013-04-04

摘　　要：Possible impact of reduced Arctic sea-ice on winter severe weather in China is investigated regarding the snowstorm over southern China in January 2008. The sea-ice conditions in the summer （July-September） and fall （September-November） of 2007 show that the sea-ice is the lowest that year. During the summer and fall of 2007, sea ice displayed a significant decrease in the East Siberian, the northern Chukchi Sea, the western Beaufort Sea, the Barents Sea, and the Kara Sea. A ECHAM5.4 atmospheric general circula- tion model is forced with realistic sea-ice conditions and strong thermal responses with warmer surface air temperature and higher-than-normal heat flux associated with the sea-ice anomalies are found. The model shows remote atmospheric responses over East Asia in January 2008, which result in severe snowstorm over southern China. Strong water-vapor transported from the Bay of Bengal and from the Pacific Ocean related to Arctic sea-ice anomalies in the fall （instead of summer） of 2007 is considered as one of the main causes of the snowstorm formation.Possible impact of reduced Arctic sea-ice on winter severe weather in China is investigated regarding the snowstorm over southern China in January 2008. The sea-ice conditions in the summer （July-September） and fall （September-November） of 2007 show that the sea-ice is the lowest that year. During the summer and fall of 2007, sea ice displayed a significant decrease in the East Siberian, the northern Chukchi Sea, the western Beaufort Sea, the Barents Sea, and the Kara Sea. A ECHAM5.4 atmospheric general circula- tion model is forced with realistic sea-ice conditions and strong thermal responses with warmer surface air temperature and higher-than-normal heat flux associated with the sea-ice anomalies are found. The model shows remote atmospheric responses over East Asia in January 2008, which result in severe snowstorm over southern China. Strong water-vapor transported from the Bay of Bengal and from the Pacific Ocean related to Arctic sea-ice anomalies in the fall （instead of summer） of 2007 is considered as one of the main causes of the snowstorm formation.

关 键 词：Arctic sea ice severe winter weather ECHAM5.4 atmospheric general circulation model 

分 类 号：P731.15[天文地球—海洋科学] P732