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

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 ant...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Driesschaert, E., Fichefet, T., Goosse, H., Huybrechts, Philippe, Janssens, I., Mouchet, A., Munhoven, G., Brovkin, V., Weber, S. L.
Format: Article in Journal/Newspaper
Language:unknown
Published: 2007
Subjects:
Greenland
Ice Sheet
Online Access:https://epic.awi.de/id/eprint/15292/
https://epic.awi.de/id/eprint/15292/1/Dri2006a.pdf
https://doi.org/10.1029/2007GL029516
https://hdl.handle.net/10013/epic.26804
https://hdl.handle.net/10013/epic.26804.d001
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Summary: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.

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