气候变化领域集成服务门户(CCPortal): CMIP5 model simulations of warm Arctic-cold Eurasia pattern in winter surface air temperature anomalies

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DOI	10.1007/s00382-020-05241-2
	CMIP5 model simulations of warm Arctic-cold Eurasia pattern in winter surface air temperature anomalies
	Wang S.; Nath D.; Chen W.; Ma T.
发表日期	2020
ISSN	0930-7575
起始页码	4499
结束页码	4513
卷号	54
英文摘要	The second empirical orthogonal function mode (EOF2) of winter surface air temperature (SAT) over 0°–180° E, 40°–90° N during 1979–2005 is defined as warm Arctic-cold Eurasia (WACE) pattern. The present study evaluates the performance of 25 Coupled Model Inter-comparison Project Phase 5 (CMIP5) models in simulating the WACE pattern based on historical runs. There exist large inter-model spreads in the simulation of the WACE pattern. Analyses show that the ability of a CMIP5 model in capturing the WACE pattern is connected with the model’s performance in representing the observed atmospheric circulation anomalies related to the winter sea ice concentration (SIC) variation over Barents–Kara Seas. Sea ice loss over Barents–Kara Seas can induce significant positive geopotential height anomalies over Arctic region and negative geopotential height anomalies around the Baikal Lake, resulting in warm anomalies over Barents–Kara Seas and cold anomalies over Eurasia. Further analysis shows that CMIP5 model’s performance in representing the SAT anomalies related to the WACE pattern is partly due to simulation of the amplitude of winter SIC variability over Barents–Kara Seas. Larger standard deviations of winter SIC over Barents–Kara Seas can instigate stationary wave-train more easily, which further induces the SAT anomalies. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Atmospheric circulation anomalies; CMIP5; Sea ice; Warm Arctic-cold Eurasia; Winter
语种	英语
scopus关键词	air temperature; atmospheric circulation; climate change; climate modeling; empirical orthogonal function analysis; geopotential; sea ice; standing wave; temperature anomaly; warming; winter; Arctic Ocean; Barents Sea; Kara Sea; Lake Baikal; Russian Federation
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145465
作者单位	Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Wang S.,Nath D.,Chen W.,et al. CMIP5 model simulations of warm Arctic-cold Eurasia pattern in winter surface air temperature anomalies[J],2020,54.
APA	Wang S.,Nath D.,Chen W.,&Ma T..(2020).CMIP5 model simulations of warm Arctic-cold Eurasia pattern in winter surface air temperature anomalies.Climate Dynamics,54.
MLA	Wang S.,et al."CMIP5 model simulations of warm Arctic-cold Eurasia pattern in winter surface air temperature anomalies".Climate Dynamics 54(2020).