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

Driesschaert, E.; Fichefet, T.; Goosse, H.; Huybrechts, P.; Janssens, I.; Mouchet, A.; Munhoven, G.; Brovkin, Victor; Weber, S. L.

doi:10.1029/2007GL029516

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

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Driesschaert, E., Fichefet, T., Goosse, H., Huybrechts, P., Janssens, I., Mouchet, A., et al. (2007). Modeling the influence of Greenland ice sheet melting on the Atlantic meridional overturning circulation during the next millennia. Geophysical Research Letters, 34: L10707. doi:10.1029/2007GL029516.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0023-E5D3-D

Abstract

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.