气候变化领域集成服务门户(CCPortal): Why does a colder (warmer) winter tend to be followed by a warmer (Cooler) summer over Northeast Eurasia?

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DOI	10.1175/JCLI-D-20-0036.1
	Why does a colder (warmer) winter tend to be followed by a warmer (Cooler) summer over Northeast Eurasia?
	Chen S.; Wu R.; Chen W.; Li K.
发表日期	2020
ISSN	0894-8755
起始页码	7255
结束页码	7274
卷号	33 期号:17
英文摘要	This study reveals a pronounced out-of-phase relationship between surface air temperature (SAT) anomalies over northeast Eurasia in boreal winter and the following summer during 1980–2017. A colder (warmer) winter over northeast Eurasia tends to be followed by a warmer (cooler) summer of next year. The processes for the out-of-phase relation of winter and summer SAT involve the Arctic Oscillation (AO), the air–sea interaction in the North Atlantic Ocean, and a Eurasian anomalous atmospheric circulation pattern induced by the North Atlantic sea surface temperature (SST) anomalies. Winter negative AO/North Atlantic Oscillation (NAO)-like atmospheric circulation anomalies lead to continental cooling over Eurasia via anomalous advection and a tripolar SST anomaly pattern in the North Atlantic. The North Atlantic SST anomaly pattern switches to a dipolar pattern in the following summer via air–sea interaction processes and associated surface heat flux changes. The summer North Atlantic dipolar SST anomaly pattern induces a downstream atmospheric wave train, including large-scale positive geopotential height anomalies over northeast Eurasia, which contributes to positive SAT anomalies there via enhancement of downward surface shortwave radiation and anomalous advection. Barotropic model experiments verify the role of the summer North Atlantic SST anomalies in triggering the atmospheric wave train over Eurasia. Through the above processes, a colder winter is followed by a warmer summer over northeast Eurasia. The above processes apply to the years when warmer winters are followed by cooler summers except for opposite signs of SAT, atmospheric circulation, and SST anomalies. © 2020 American Meteorological Society.
英文关键词	Advection; Atmospheric temperature; Climatology; Cooling systems; Heat flux; Surface waters; Atmospheric circulation; Atmospheric circulation anomaly; Atmospheric circulation patterns; Geopotential height anomalies; North Atlantic Ocean; Short-wave radiation; Surface air temperatures; Surface heat fluxes; Oceanography; air-sea interaction; Arctic Oscillation; climate; North Atlantic Oscillation; sea surface temperature; summer; surface temperature; winter; Atlantic Ocean; Atlantic Ocean (North); Eurasia
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171155
作者单位	Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Earth Sciences, Zhejiang University, Hangzhou, China; Center for Monsoon System Research, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Chen S.,Wu R.,Chen W.,et al. Why does a colder (warmer) winter tend to be followed by a warmer (Cooler) summer over Northeast Eurasia?[J],2020,33(17).
APA	Chen S.,Wu R.,Chen W.,&Li K..(2020).Why does a colder (warmer) winter tend to be followed by a warmer (Cooler) summer over Northeast Eurasia?.Journal of Climate,33(17).
MLA	Chen S.,et al."Why does a colder (warmer) winter tend to be followed by a warmer (Cooler) summer over Northeast Eurasia?".Journal of Climate 33.17(2020).