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

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タイトル: On the response of the Greenland ice sheet to greenhouse climate change
著者: Greve, Ralf 著作を一覧する
キーワード: Greenland
Ice sheet
Greenhouse gas
Climate change
Modelling
発行日: 2000年 8月
出版者: Kluwer Academic Publishers
誌名: Climatic Change
巻: 46
号: 3
開始ページ: 289
終了ページ: 303
出版社 DOI: 10.1023/A:1005647226590
抄録: 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.
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/34701
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: Greve Ralf

 

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