气候变化领域集成服务门户(CCPortal): Warm Arctic; Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone

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DOI	10.1029/2020GL088583
	Warm Arctic; Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone
	Labe Z.; Peings Y.; Magnusdottir G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	The effect of future Arctic amplification (AA) on the extratropical atmospheric circulation remains unclear in modeling studies. Using a collection of coordinated atmospheric and coupled global climate model perturbation experiments, we find an emergent relationship between the high-latitude 1,000–500 hPa thickness response and an enhancement of the Siberian High in winter. This wave number-1-like sea level pressure anomaly pattern is linked to an equatorward shift of the eddy-driven jet and a dynamical cooling response in eastern Asia. Additional simulations, where AA is imposed directly into the model domain by nudging, demonstrate how the sea ice forcing is insufficient by itself to capture the vertical extent of the warming and by extension the amplitude of the response in the Siberian High. This study demonstrates the importance of the vertical extent of the tropospheric warming over the polar cap in revealing the “warm Arctic, cold Siberia” anomaly pattern in future projections. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Sea ice; Sea level; Anomaly patterns; Atmospheric circulation; Coupled global climate model; Equatorward shift; Future projections; Sea level pressure; Siberian highs; Tropospheric warming; Climate models; atmospheric circulation; climate modeling; global climate; sea ice; sea level pressure; seasonal variation; troposphere; Arctic Ocean; Asia; Siberia
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/169771
作者单位	Department of Earth System Science, University of California, Irvine, Irvine, CA, United States
推荐引用方式 GB/T 7714	Labe Z.,Peings Y.,Magnusdottir G.. Warm Arctic; Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone[J],2020,47(17).
APA	Labe Z.,Peings Y.,&Magnusdottir G..(2020).Warm Arctic; Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone.Geophysical Research Letters,47(17).
MLA	Labe Z.,et al."Warm Arctic; Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone".Geophysical Research Letters 47.17(2020).