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On the response of the Greenland ice sheet to greenhouse climate change

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Title: On the response of the Greenland ice sheet to greenhouse climate change
Authors: Greve, Ralf Browse this author →KAKEN DB
Keywords: Greenland
Ice sheet
Greenhouse gas
Climate change
Issue Date: Aug-2000
Publisher: Kluwer Academic Publishers
Journal Title: Climatic Change
Volume: 46
Issue: 3
Start Page: 289
End Page: 303
Publisher DOI: 10.1023/A:1005647226590
Abstract: Numerical computations are performed with the three-dimensional polythermal ice-sheet model SICOPOLIS in order to investigate the possible impact of a greenhouse-gas-induced climate change on the Greenland ice sheet. The assumed increase of the mean annual air temperature above the ice covers a range from ΔT = 1℃ to 12℃, and several parameterizations for the snowfall and the surface melting are considered. The simulated shrinking of the ice sheet is a smooth function of the temperature rise, indications for the existence of critical thresholds of the climate input are not found. Within 1000 model years, the icevolume decrease is limited to 10% of the present volume for ΔT ≤ 3℃, whereas the most extreme scenario, ΔT = 12℃, leads to an almost entire disintegration, which corresponds to a sea-level equivalent of 7 m. The different snowfall and melting parameterizations yield an uncertainty range of up to 20% of the present ice volume after 1000 model years.
Type: article (author version)
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Greve Ralf

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