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

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

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 dimini...

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Main Authors: T. Albrecht, M. Martin, M. Haseloff, R. Winkelmann, A. Levermann
Format: Article
Language:English
Published: Copernicus Publications 2011-01-01
Series:The Cryosphere
Online Access:http://www.the-cryosphere.net/5/35/2011/tc-5-35-2011.pdf
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spelling doaj-263116a6550d41b0a955eb4da0e7aee22020-11-25T01:02:23ZengCopernicus PublicationsThe Cryosphere1994-04161994-04242011-01-0151354410.5194/tc-5-35-2011Parameterization for subgrid-scale motion of ice-shelf calving frontsT. AlbrechtM. MartinM. HaseloffR. WinkelmannA. LevermannA 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.http://www.the-cryosphere.net/5/35/2011/tc-5-35-2011.pdf
collection DOAJ
language English
format Article
sources DOAJ
author T. Albrecht
M. Martin
M. Haseloff
R. Winkelmann
A. Levermann
spellingShingle T. Albrecht
M. Martin
M. Haseloff
R. Winkelmann
A. Levermann
Parameterization for subgrid-scale motion of ice-shelf calving fronts
The Cryosphere
author_facet T. Albrecht
M. Martin
M. Haseloff
R. Winkelmann
A. Levermann
author_sort T. Albrecht
title Parameterization for subgrid-scale motion of ice-shelf calving fronts
title_short Parameterization for subgrid-scale motion of ice-shelf calving fronts
title_full Parameterization for subgrid-scale motion of ice-shelf calving fronts
title_fullStr Parameterization for subgrid-scale motion of ice-shelf calving fronts
title_full_unstemmed Parameterization for subgrid-scale motion of ice-shelf calving fronts
title_sort parameterization for subgrid-scale motion of ice-shelf calving fronts
publisher Copernicus Publications
series The Cryosphere
issn 1994-0416
1994-0424
publishDate 2011-01-01
description 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.
url http://www.the-cryosphere.net/5/35/2011/tc-5-35-2011.pdf
work_keys_str_mv AT talbrecht parameterizationforsubgridscalemotionoficeshelfcalvingfronts
AT mmartin parameterizationforsubgridscalemotionoficeshelfcalvingfronts
AT mhaseloff parameterizationforsubgridscalemotionoficeshelfcalvingfronts
AT rwinkelmann parameterizationforsubgridscalemotionoficeshelfcalvingfronts
AT alevermann parameterizationforsubgridscalemotionoficeshelfcalvingfronts
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