期刊
GEOSCIENTIFIC MODEL DEVELOPMENT
卷 5, 期 5, 页码 1273-1295出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/gmd-5-1273-2012
关键词
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资金
- US National Science Foundation [ANT 0424589, 1043018, 25-0550-0001, OCE-1202632]
- Directorate For Geosciences [1240507] Funding Source: National Science Foundation
- Directorate For Geosciences
- Div Atmospheric & Geospace Sciences [1203910] Funding Source: National Science Foundation
- Directorate For Geosciences
- Division Of Ocean Sciences [1202632] Funding Source: National Science Foundation
- Directorate For Geosciences
- Division Of Ocean Sciences [0902870] Funding Source: National Science Foundation
- Office of Polar Programs (OPP)
- Directorate For Geosciences [1043018] Funding Source: National Science Foundation
The formulation of a 3-D ice sheet-shelf model is described. The model is designed for long-term continental-scale applications, and has been used mostly in paleoclimatic studies. It uses a hybrid combination of the scaled shallow ice and shallow shelf approximations for ice flow. Floating ice shelves and grounding-line migration are included, with parameterized ice fluxes at grounding lines that allows relatively coarse resolutions to be used. All significant components and parameterizations of the model are described in some detail. Basic results for modern Antarctica are compared with observations, and simulations over the last 5 million years are compared with previously published results. The sensitivity of ice volumes during the last deglaciation to basal sliding coefficients is discussed.
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