气候变化领域集成服务门户(CCPortal): “Warm Arctic-Cold Siberia” as an Internal Mode Instigated by North Atlantic Warming

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DOI	10.1029/2019GL086248
	“Warm Arctic-Cold Siberia” as an Internal Mode Instigated by North Atlantic Warming
	Jin C.; Wang B.; Yang Y.-M.; Liu J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:9
英文摘要	Eurasia has experienced more frequent bitter winters over the past two decades, which concurred with a prominent “Warm Arctic-Cold Siberia” (WACS) pattern that is unexpected from global warming. Here we show, by analysis of 117-year observations and climate model's millennial simulations, that the WACS is an internal mode of winter temperature variability, which cannot be excited by greenhouse gases and solar forcing. Observational and simulated results suggest that frequent occurrences of that WACS pattern are instigated by warm phases of Atlantic Multidecadal Oscillation (AMO). North Atlantic warming may activate the WACS by generating a background Atlantic-Eurasian wave train characterized by enhanced Ural Mountain ridge and East Asian trough, which is conducive to recurrent WACS pattern. The wave train-induced the Barents Sea ice melting can act as an amplifier, reinforcing the WACS. Although increased greenhouse gases favor a uniform warming pattern, they may contribute to WACS formation by affecting AMO. © 2020. The Authors.
英文关键词	Global warming; Greenhouse gases; Sea ice; Atlantic multidecadal oscillations; Internal modes; Mountain ridges; North Atlantic; Simulated results; Solar forcing; Temperature variability; Warming patterns; Climate models; Atlantic Multidecadal Oscillation; climate modeling; global warming; solar radiation; winter; Arctic Ocean; Atlantic Ocean; Atlantic Ocean (North); Barents Sea; Urals
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170373
作者单位	Key Laboratory for Virtual Geographic Environment of Ministry of Education/State Key Laboratory Cultivation Base of Geographical Environment Evolution of Jiangsu Province and Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Geography Science, Nanjing Normal University, Nanjing, China; Department of Atmospheric Sciences and International Pacific Research center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, United States; Earth System Modeling Center, Nanjing University of Information Science and Technology, Nanjing, China; Jiangsu Provincial Key Laboratory for Numerical Simulation of Large Scale Complex Systems, School of Mathematical Science, Nanjing Normal University, Nanjing, China
推荐引用方式 GB/T 7714	Jin C.,Wang B.,Yang Y.-M.,等. “Warm Arctic-Cold Siberia” as an Internal Mode Instigated by North Atlantic Warming[J],2020,47(9).
APA	Jin C.,Wang B.,Yang Y.-M.,&Liu J..(2020).“Warm Arctic-Cold Siberia” as an Internal Mode Instigated by North Atlantic Warming.Geophysical Research Letters,47(9).
MLA	Jin C.,et al."“Warm Arctic-Cold Siberia” as an Internal Mode Instigated by North Atlantic Warming".Geophysical Research Letters 47.9(2020).