Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean

被引：531

作者：

Polyakov, Igor V. ^{[1
,2
]}

Pnyushkov, Andrey V. ^{[1
]}

Alkire, Matthew B. ^{[3
]}

Ashik, Igor M. ^{[4
]}

Baumann, Till M. ^{[1
,2
]}

Carmack, Eddy C. ^{[5
]}

Goszczko, Ilona ^{[6
]}

Guthrie, John ^{[3
]}

Ivanov, Vladimir V. ^{[4
,7
,8
]}

Kanzow, Torsten ^{[9
,10
]}

Krishfield, Richard ^{[11
]}

Kwok, Ronald ^{[12
]}

Sundfjord, Arild ^{[13
]}

Morison, James ^{[3
]}

Rember, Robert ^{[1
]}

Yulin, Alexander ^{[4
]}

机构：

[1] Univ Alaska Fairbanks, Int Arctic Res Ctr, 930 Koyukuk Dr, Fairbanks, AK 99775 USA

[2] Univ Alaska Fairbanks, Coll Nat Sci & Math, 930 Koyukuk Dr, Fairbanks, AK 99775 USA

[3] Univ Washington, Polar Sci Ctr, Appl Phys Lab, 1013 Northeast 40th St, Seattle, WA 98105 USA

[4] Arctic & Antarctic Res Inst, 38 Bering St, St Petersburg 199397, Russia

[5] Fisheries & Oceans Canada, Inst Ocean Sci, 9860 West Saanich Rd, Sidney, BC V8L 4B2, Canada

[6] Polish Acad Sci, Inst Oceanol, Powstancow Warszawy 55, PL-81712 Sopot, Poland

[7] Univ Alaska Fairbanks, Int Arctic Res Ctr, 930 Koyukuk Dr, Fairbanks, AK 99775 USA

[8] Hydrometeorol Ctr Russia, 11-13 B, Moscow 1113, Russia

[9] Alfred Wegener Inst, Helmholtz Ctr Polar & Marine Res, Bussestr 24, D-27570 Bremerhaven, Germany

[10] Univ Bremen, Dept Phys & Elect Engn, D-28334 Bremen, Germany

[11] Woods Hole Oceanog Inst, 22 Water St, Woods Hole, MA 02543 USA

[12] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[13] Norwegian Polar Res Inst, N-9296 Tromso, Norway

来源：

SCIENCE | 2017年 / 356卷 / 6335期

基金：

美国国家科学基金会; 俄罗斯科学基金会; 美国海洋和大气管理局;

关键词：

COLD HALOCLINE; HEAT; NORTH; SURFACE; LAYER; VARIABILITY; RETREAT; WATER; ZONE;

D O I：

10.1126/science.aai8204

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Arctic sea-ice loss is a leading indicator of climate change and can be attributed, in large part, to atmospheric forcing. Here, we show that recent ice reductions, weakening of the halocline, and shoaling of the intermediate-depth Atlantic Water layer in the eastern Eurasian Basin have increased winter ventilation in the ocean interior, making this region structurally similar to that of the western Eurasian Basin. The associated enhanced release of oceanic heat has reduced winter sea-ice formation at a rate now comparable to losses from atmospheric thermodynamic forcing, thus explaining the recent reduction in sea-ice cover in the eastern Eurasian Basin. This encroaching "atlantification" of the Eurasian Basin represents an essential step toward a new Arctic climate state, with a substantially greater role for Atlantic inflows.

引用

页码：285 / +

页数：7

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