The effect of Denmark strait overflow on the Atlantic meridional overturning circulation -: art. no. L04602

被引:21
作者
Kösters, F
Käse, RH
Schmittner, A
Herrmann, P
机构
[1] Univ Kiel, Inst Geowissensch, D-24118 Kiel, Germany
[2] Univ Hamburg, Inst Meereskunde, D-20146 Hamburg, Germany
[3] Peter Hermann Sci Comp, D-24116 Kiel, Germany
关键词
D O I
10.1029/2004GL022112
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
[1] Hydraulic constraints on the Denmark Strait overflow (DSO) are used as a parameterisation to improve the overflow representation in a global climate model. The parameterisation increases deep water formation in the Nordic Seas and strengthens the Norwegian Atlantic Current. Associated higher northward heat transport leads to a northward shift of the sea-ice edge and warming by 2.5 degreesC in the eastern Nordic Seas despite a small effect on the Atlantic Meridional Overturning Circulation (AMO). This emphasises the impact of the DSO on climate even though the response in overturning due to the DSO representation in this model is less than expected from previous studies using ocean only models. In contrast to previous studies almost no stabilising effect of the overflow on the AMO is found to freshwater perturbations.
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页码:1 / 4
页数:4
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