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Results from the EISMINT model intercomparison : the effects of thermomechanical coupling

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タイトル: Results from the EISMINT model intercomparison : the effects of thermomechanical coupling
著者: Payne, A. J. 著作を一覧する
Huybrechts, P. 著作を一覧する
Abe-Ouchi, A. 著作を一覧する
Calov, R. 著作を一覧する
Fastook, J. L. 著作を一覧する
Greve, R. 著作を一覧する
Marshall, S. J. 著作を一覧する
Marsiat, I. 著作を一覧する
Ritz, C. 著作を一覧する
Tarasov, L. 著作を一覧する
Thomassen, M. P. A. 著作を一覧する
キーワード: Ice sheet
Model intercomparison
EISMINT
Thermomechanical coupling
Climate change
発行日: 2000年 3月
出版者: International Glaciological Society
誌名: Journal of Glaciology
巻: 46
号: 153
開始ページ: 227
終了ページ: 238
出版社 DOI: 10.3189/172756500781832891
抄録: This paper discusses results from the second phase of the European Ice Sheet Modelling Initiative (EISMINT). It reports the intercomparison of ten operational ice-sheet models and uses a series of experiments to examine the implications of thermomechanical coupling for model behaviour. A schematic, circular ice sheet is used in the work which investigates both steady states and the response to stepped changes in climate. The major finding is that the radial symmetry implied in the experimental design can, under certain circumstances, break down with the formation of distinct, regularly spaced spokes of cold ice which extended from the interior of the ice sheet outward to the surrounding zone of basal melt. These features also manifest themselves in the thickness and velocity distributions predicted by the models. They appear to be a common feature to all of the models which took part in the intercomparison, and may stem from interactions between ice temperature, flow and surface form. The exact nature of these features varies between models, and their existence appears to be controlled by the overall thermal regime of the ice sheet. A second result is that there is considerable agreement between the models in their predictions of global-scale response to imposed climate change.
Rights: © 2000 International Glaciological Society
Relation (URI): http://www.igsoc.org/
資料タイプ: article
URI: http://hdl.handle.net/2115/34618
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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