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

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

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3410707d&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 10, CiteID L10707

Physics

36

Cryosphere: Ice Sheets, Global Change: Earth System Modeling (1225), Global Change: Oceans (1616, 3305, 4215, 4513)

Scientific paper

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 non-linear 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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