Amount of CO2 emissions irreversibly leading to the total melting of Greenland
International audience [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 emissio...
Published in: | Geophysical Research Letters |
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Main Authors: | , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2008
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Subjects: | |
Online Access: | https://hal.science/hal-02922657 https://hal.science/hal-02922657/document https://hal.science/hal-02922657/file/2008GL033472.pdf https://doi.org/10.1029/2008GL033472 |
Summary: | International audience [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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