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：

日本学术振兴会; 美国国家科学基金会;

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.

引用

页数：5

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