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首页 > 中国极地考察知识库 > 成果信息库 > 已审查 2007年北极海冰异常是2008年初中国南方雪灾形成的一个重要原因吗?

2007年北极海冰异常是2008年初中国南方雪灾形成的一个重要原因吗?

【标题】2007年北极海冰异常是2008年初中国南方雪灾形成的一个重要原因吗?

【Title】Is extreme Arctic sea ice anomaly in 2007 a key contributor to severe January 2008 snowstorm in China?

【DOI】10.1002/joc.2400

【作者】 刘娜; 刘骥平; 张占海; 陈红霞

【Author】 Liu Na ; Liu Jiping ; Zhang Zhanhai ; Chen Hongxia

【期刊】International Journal of Climatology

【Journal】International Journal of Climatology

【期刊年份】2012

【卷】32

【期】13

【关键词】 Artic Sea Ice; January 2008 Snowstorm in China; AGCM

【Keywords】 Artic Sea Ice; January 2008 Snowstorm in China; AGCM

【摘要】We conduct numerical experiments with an atmospheric general circulation model to answer the question whether the extreme Arctic sea ice anomaly in 2007 contributed to the severe January 2008 snowstorm in China. Results show that the record low Arctic sea ice in September 2007, and follow-up slow recovery of the Arctic sea ice in October and November 2007 could excite two stationary wave structures. One wave train propagates southeastward from the Barents/Kara Seas to central Asia, strengthening the Middle East Jet Stream (MEJS), and the other wave train propagates southward from central Arctic Ocean/eastern Siberia Sea to the mid-latitude and subtropics of the north Pacific,weakening the East Asian Jet Stream (EAJS). The anomalous westerlies associated with the strengthening of the MEJS and the anomalous easterlies associated with the weakening of the EAJS form a strong convergence zone over central and southern China, providing favorable conditions for the severe January 2008 snowstorm.

【Abstract】We conduct numerical experiments with an atmospheric general circulation model to answer the question whether the extreme Arctic sea ice anomaly in 2007 contributed to the severe January 2008 snowstorm in China. Results show that the record low Arctic sea ice in September 2007, and follow-up slow recovery of the Arctic sea ice in October and November 2007 could excite two stationary wave structures. One wave train propagates southeastward from the Barents/Kara Seas to central Asia, strengthening the Middle East Jet Stream (MEJS), and the other wave train propagates southward from central Arctic Ocean/eastern Siberia Sea to the mid-latitude and subtropics of the north Pacific,weakening the East Asian Jet Stream (EAJS). The anomalous westerlies associated with the strengthening of the MEJS and the anomalous easterlies associated with the weakening of the EAJS form a strong convergence zone over central and southern China, providing favorable conditions for the severe January 2008 snowstorm.

【基金/项目】 北极海冰快速变化及其天气气候效应研究 ; 南大洋海气湍流通量资料的建立及在气候研究中的应用 ; 气候系统模式的高性能算法与应用计算 ; Sea-ice-air interaction in the Southern Ocean and its influence on the south Indian Ocean ; 2008年初中国南方雪灾成因研究北极海冰异常变化及ENSO的影响 ; 极地锚系观测系统关键技术研究 ; 2012年度极地优秀论文三等奖

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