globalchange  > 气候变化与战略
DOI: 10.5194/tc-14-693-2020
论文题名:
The Arctic sea ice extent change connected to Pacific decadal variability
作者: Yang X.-Y.; Wang G.; Keenlyside N.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期:2
起始页码: 693
结束页码: 708
语种: 英语
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)
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164635
Appears in Collections:气候变化与战略

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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

Recommended Citation:
Yang X.-Y.,Wang G.,Keenlyside N.. The Arctic sea ice extent change connected to Pacific decadal variability[J]. Cryosphere,2020-01-01,14(2)
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