Summer retreat of Arctic sea ice: Role of summer winds

被引：95
|
作者：
Ogi, Masayo [1 ,5 ]
Rigor, Ignatius G. [1 ,3 ]
McPhee, Miles G. [2 ]
Wallace, John M. [4 ]
机构：
[1] Univ Washington, Joint Inst Study Atmosphere & Ocean, Seattle, WA 98195 USA
[2] McPhee Res Co, Naches, WA 98937 USA
[3] Univ Washington, Polar Sci Ctr, Appl Phys Lab, Seattle, WA 98105 USA
[4] Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA
[5] Japan Agcy Marine Earth Sci & Technol, Frontier Res Ctr Global Change, Kanazawa Ku, Kanagawa 2360001, Japan
来源：
GEOPHYSICAL RESEARCH LETTERS | 2008年 / 35卷 / 24期
基金：
美国国家科学基金会; 日本学术振兴会;
关键词：
D O I：
10.1029/2008GL035672
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The unprecedented retreat of first-year ice during summer 2007 was enhanced by strong poleward drift over the western Arctic induced by anomalously high sea-level pressure (SLP) over the Beaufort Sea that persisted throughout much of the summer. Comparison of the tracks of drifting buoys with monthly mean SLP charts shows a substantial Ekman drift. By means of linear regression analysis it is shown that Ekman drift during summer has played an important role in regulating annual minimum Arctic sea-ice extent in prior years as well. In combination, the preconditioning by events in prior years, as represented by an index of May multi-year ice, and current atmospheric conditions, as represented by an index of July-August-September SLP anomalies over the Arctic basin account for similar to 60% of the year-to-year variance of September sea-ice extent since 1979. Citation: Ogi, M., I. G. Rigor, M. G. McPhee, and J. M. Wallace (2008), Summer retreat of Arctic sea ice: Role of summer winds, Geophys. Res. Lett., 35, L24701, doi: 10.1029/2008GL035672.
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页数：5
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