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Article Dans Une Revue Geophysical Research Letters Année : 2008

Amount of CO2 emissions irreversibly leading to the total melting of Greenland

Résumé

[1] The long-term response of Greenland to anthropogenic warming is of critical interest for the magnitude of the sea-level rise and for climate-related concerns. To explore its evolution over several millennia we use a climate-ice sheet model forced by a range of CO 2 emission scenarios, accounting for the natural removal of anthropogenic CO 2 from the atmosphere. Above 3000 GtC, the melting appears irreversible, while below 2500 GtC, Greenland only experiences a partial melting followed by a re-growth phase. Delaying emissions through sequestration slows significantly the melting, but has only a limited impact on the ultimate fate of Greenland. Its behavior is therefore mostly dependent on the cumulative CO 2 emissions. This study demonstrates that the fossil fuel emissions of the next century will have dramatic consequences on sea-level rise for several millennia. Citation: Charbit, S., D. Paillard, and G. Ramstein (2008), Amount of CO 2 emissions irreversibly leading to the total melting of Greenland, Geophys. Res. Lett., 35, L12503,
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Dates et versions

hal-02922657 , version 1 (28-10-2020)

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Sylvie Charbit, D. Paillard, G. Ramstein. Amount of CO2 emissions irreversibly leading to the total melting of Greenland. Geophysical Research Letters, 2008, 35 (12), pp.n/a-n/a. ⟨10.1029/2008GL033472⟩. ⟨hal-02922657⟩
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