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  Parameterization for subgrid-scale motion of ice-shelf calving fronts

Albrecht, T., Martin, M., Haseloff, M., Winkelmann, R., & Levermann, A. (2011). Parameterization for subgrid-scale motion of ice-shelf calving fronts. The Cryosphere, 5, 35-44. doi:10.5194/tc-5-35-2011.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-5DB2-E Version Permalink: http://hdl.handle.net/21.11116/0000-0001-5DB5-B
Genre: Journal Article

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tc-5-35-2011.pdf (Publisher version), 662KB
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 Creators:
Albrecht, T., Author
Martin, M., Author
Haseloff, M., Author
Winkelmann , R.1, 2, Author
Levermann, A., Author
Affiliations:
1IMPRS on Earth System Modelling, MPI for Meteorology, Max Planck Society, Bundesstraße 53, 20146 Hamburg, DE, ou_913547              
2Potsdam Institute for Climate Impact Research, Potsdam, ou_persistent22              

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Free keywords: boundary condition; finite difference method; geometry; ice sheet; ice shelf; mathematical analysis; numerical model; parameterization; resolution; velocity
 Abstract: A parameterization for the motion of ice-shelf fronts on a Cartesian grid in finite-difference land-ice models is presented. The scheme prevents artificial thinning of the ice shelf at its edge, which occurs due to the finite resolution of the model. The intuitive numerical implementation diminishes numerical dispersion at the ice front and enables the application of physical boundary conditions to improve the calculation of stress and velocity fields throughout the ice-sheet-shelf system. Numerical properties of this subgrid modification are assessed in the Potsdam Parallel Ice Sheet Model (PISM-PIK) for different geometries in one and two horizontal dimensions and are verified against an analytical solution in a flow-line setup. © 2011 Author(S).

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Language(s): eng - English
 Dates: 2011
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.5194/tc-5-35-2011
BibTex Citekey: Albrecht201135
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Title: The Cryosphere
  Abbreviation : TC
Source Genre: Journal
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Publ. Info: Copernicus Publications
Pages: - Volume / Issue: 5 Sequence Number: - Start / End Page: 35 - 44 Identifier: Other: 1994-0424
ISSN: 1994-0416
CoNE: https://pure.mpg.de/cone/journals/resource/1994-0416