[en] 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. In the most extreme scenario considered, the freshwater flux from Greenland into the surrounding oceans is higher than 0.1 Sv during a few centuries. This is however insufficient to induce a shutdown of the AMOC in the model.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Fichefet, Thierry; Université Catholique de Louvain - UCL
Driesschaert, Emmanuelle; Université Catholique de Louvain - UCL
Goosse, Hugues; Université Catholique de Louvain - UCL
Mouchet, Anne ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Munhoven, Guy ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) - Pétrologie, géochimie endogènes et pétrophysique
Brovkin, Victor; Potsdam Institute for Climate Impact Research
Weber, Susanne; Royal Netherlands Meteorological Institute
Language :
English
Title :
Modeling the influence of the Greenland ice sheet melting on the Atlantic meridional overturning circulation during the next millennia
