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DOI	10.5194/tc-14-693-2020
	The Arctic sea ice extent change connected to Pacific decadal variability
	Yang X.-Y.; Wang G.; Keenlyside N.
发表日期	2020
ISSN	19940416
起始页码	693
结束页码	708
卷号	14 期号:2
英文摘要	After an unprecedented retreat, the total Arctic sea ice cover for the post-2007 period is characterized by low extent and a remarkable increase in annual cycle amplitude. We have identified the leading role of spring Bering Sea ice in explaining the changes in the amplitude of the annual cycle of total Arctic sea ice. In particular, these changes are related to the recent occurrence of multiyear variability in spring Bering Sea ice extent. This is due to the phase-locking of the North Pacific Gyre Oscillation (NPGO) and the Pacific Decadal Oscillation (PDO) after about 2007, with a correlation coefficient reaching -0.6. Furthermore, there emerge notable changes in the sea level pressure and sea surface temperature patterns associated with the NPGO in the recent decade. After 2007, the NPGO is related to a quadrupole of sea level pressure (SLP) anomalies that is associated with the wind stress curl and Ekman pumping rate anomalies in the Bering deep basin; these account for the change in Bering Sea subsurface variability that contribute to the decadal oscillation of the spring Bering Sea ice extent. © 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
英文关键词	amplitude; annual cycle; Ekman pumping; ice cover; Pacific Decadal Oscillation; sea ice; sea level pressure; sea surface temperature; wind stress; Arctic; Bering Sea; Pacific Ocean; Pacific Ocean (North)
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202257
作者单位	State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China; Department of Atmospheric and Oceanic Sciences and Institute of Atmospheric Sciences, Fudan University, Shanghai, China; CMA-FDU Joint Laboratory of Marine Meteorology, Shanghai, China; Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway; Nansen Environmental and Remote Sensing Center, Bergen, Norway
推荐引用方式 GB/T 7714	Yang X.-Y.,Wang G.,Keenlyside N.. The Arctic sea ice extent change connected to Pacific decadal variability[J],2020,14(2).
APA	Yang X.-Y.,Wang G.,&Keenlyside N..(2020).The Arctic sea ice extent change connected to Pacific decadal variability.Cryosphere,14(2).
MLA	Yang X.-Y.,et al."The Arctic sea ice extent change connected to Pacific decadal variability".Cryosphere 14.2(2020).