Modeling the influence of Greenland ice sheet melting on the Atlantic meridional overturning circulation during the next millennia

被引：83

作者：

Driesschaert, E.

Fichefet, T.

Goosse, H.

Huybrechts, P.

Janssens, I.

Mouchet, A.

Munhoven, G.

Brovkin, V.

Weber, S. L.

机构：

[1] Catholic Univ Louvain, Inst Astron & Geophys Georges Lemaitre, B-1348 Louvain, Belgium

[2] Vrije Univ Brussel, Dept Geog, B-1050 Brussels, Belgium

[3] Univ Liege, Inst Astrophys & Geophys, Lab Phys Atmospher & Planetaire, B-4000 Liege, Belgium

[4] Potsdam Inst Climate Impact Res, Climate Syst Res Dept, D-14412 Potsdam, Germany

[5] Royal Netherlands Meteorol Inst, NL-3730 AE De Bilt, Netherlands

来源：

GEOPHYSICAL RESEARCH LETTERS | 2007年 / 34卷 / 10期

关键词：

CLIMATE-CHANGE; THERMOHALINE CIRCULATION; CARBON-CYCLE; 21ST-CENTURY; VEGETATION;

D O I：

10.1029/2007GL029516

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A three-dimensional Earth system model of intermediate complexity including a dynamic ice sheet component has been used to investigate the long-term evolution of the Greenland ice sheet and its effects on the Atlantic meridional overturning circulation (AMOC) in response to a range of stabilized anthropogenic forcings. Our results suggest that the Greenland ice sheet volume should experience a significant decrease in the future. For a radiative forcing exceeding 7.5 W m(-2), the modeled ice sheet melts away within 3000 years. A number of feedbacks operate during this deglaciation, implying a strong nonlinear relationship between the radiative forcing and the melting rate. Only in the most extreme scenarios considered, the freshwater flux from Greenland into the surrounding oceans ( of ca. 0.1 Sv during a few centuries) induces a noticeable weakening of the AMOC in the model.

引用

页数：5

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