Implications of changes in freshwater flux from the Greenland ice sheet for the climate of the 21st century

被引：93

作者：

Fichefet, T ^{[1
]}

Poncin, C

Goosse, H

Huybrechts, P

Janssens, I

Le Treut, H

机构：

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

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

[3] Ecole Normale Super, CNRS, Meteorol Dynam Lab, F-75231 Paris, France

[4] Alfred Wegener Inst Polar & Marine Res, Bremerhaven, Germany

来源：

GEOPHYSICAL RESEARCH LETTERS | 2003年 / 30卷 / 17期

关键词：

D O I：

10.1029/2003GL017826

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

[1] Two simulations of the 21st century climate have been carried out using, on the one hand, a coarse resolution climate general circulation model and, on the other hand, the same model coupled to a comprehensive model of the Greenland ice sheet. Both simulations display a gradual global warming up to 2080. In the experiment that includes an interactive ice sheet component, a strong and abrupt weakening of the North Atlantic thermohaline circulation occurs at the end of the 21st century. This feature is triggered by an enhanced freshwater input arising mainly from a partial melting of the Greenland ice sheet. As a consequence of the circulation decline, a marked cooling takes place over eastern Greenland and the northern North Atlantic. This result underlines the potential role of the Greenland ice sheet in the evolution of climate over the 21st century.

引用

页数：4

共 18 条

[1] THE GREAT SALINITY ANOMALY IN THE NORTHERN NORTH-ATLANTIC 1968-1982 [J].

DICKSON, RR ;

MEINCKE, J ;

MALMBERG, SA ;

LEE, AJ .

PROGRESS IN OCEANOGRAPHY, 1988, 20 (02) :103-151

[2] Rapid changes of glacial climate simulated in a coupled climate model [J].

Ganopolski, A ;

Rahmstorf, S .

NATURE, 2001, 409 (6817) :153-158

[3] Importance of ice-ocean interactions for the global ocean circulation: A model study [J].

Goosse, H ;

Fichefet, T .

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1999, 104 (C10) :23337-23355

[4] INTER-OCEAN EXCHANGE OF THERMOCLINE WATER [J].

GORDON, AL .

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1986, 91 (C4) :5037-5046

[5] Ocean-atmosphere interactions and climate drift in a coupled general circulation model [J].

Grenier, H ;

Le Treut, H ;

Fichefet, T .

CLIMATE DYNAMICS, 2000, 16 (09) :701-717

[6]

[Houghton J.T. IPCC. IPCC.], 2001, CLIMATE CHANGE

[7]

Huybrechts P, 1999, J CLIMATE, V12, P2169, DOI 10.1175/1520-0442(1999)012<2169:TDROTG>2.0.CO

[8]

[9] The response of the Greenland ice sheet to climate changes in the 21st century by interactive coupling of an AOGCM with a thermomechanical ice-sheet model [J].

Huybrechts, P ;

Janssens, I ;

Pocin, C ;

Fichefet, T .

ANNALS OF GLACIOLOGY, VOL 35, 2002, 35 :409-415

[10] The treatment of meltwater retention in mass-balance parameterizations of the Greenland ice sheet [J].

Janssens, I ;

Huybrechts, P .

ANNALS OF GLACIOLOGY, VOL 31, 2000, 2000, 31 :133-140

← 1 2 →