Performance analysis of high-resolution ice-sheet simulations
Abstract Numerical glacier and ice-sheet models compute evolving ice geometry and velocity fields using various stress-balance approximations and boundary conditions. At high spatial resolution, with horizontal mesh/grid resolutions of a few kilometers or smaller, these models usually require time s...
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2022
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Online Access: | http://dx.doi.org/10.1017/jog.2022.113 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022001137 |
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crcambridgeupr:10.1017/jog.2022.113 2024-03-03T08:45:25+00:00 Performance analysis of high-resolution ice-sheet simulations Bueler, Ed 2022 http://dx.doi.org/10.1017/jog.2022.113 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022001137 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 69, issue 276, page 930-935 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 2022 crcambridgeupr https://doi.org/10.1017/jog.2022.113 2024-02-08T08:32:51Z Abstract Numerical glacier and ice-sheet models compute evolving ice geometry and velocity fields using various stress-balance approximations and boundary conditions. At high spatial resolution, with horizontal mesh/grid resolutions of a few kilometers or smaller, these models usually require time steps shorter than climate-coupling time scales because they update ice thickness after each velocity solution. High-resolution performance is degraded by the stability restrictions of such explicit time-stepping. This short note, which considers the shallow ice approximation and Stokes models as stress-balance end members, clarifies the scaling of numerical model performance by quantifying simulation cost per model year in terms of mesh resolution and the number of degrees of freedom. The performance of current-generation explicit time-stepping models is assessed, and then compared to the prospective performance of implicit schemes. The main results highlight the key roles played by the algorithmic scaling of stress-balance solvers and coupled, implicit-step solvers. Article in Journal/Newspaper Ice Sheet Journal of Glaciology Cambridge University Press Journal of Glaciology 1 6 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Bueler, Ed Performance analysis of high-resolution ice-sheet simulations |
topic_facet |
Earth-Surface Processes |
description |
Abstract Numerical glacier and ice-sheet models compute evolving ice geometry and velocity fields using various stress-balance approximations and boundary conditions. At high spatial resolution, with horizontal mesh/grid resolutions of a few kilometers or smaller, these models usually require time steps shorter than climate-coupling time scales because they update ice thickness after each velocity solution. High-resolution performance is degraded by the stability restrictions of such explicit time-stepping. This short note, which considers the shallow ice approximation and Stokes models as stress-balance end members, clarifies the scaling of numerical model performance by quantifying simulation cost per model year in terms of mesh resolution and the number of degrees of freedom. The performance of current-generation explicit time-stepping models is assessed, and then compared to the prospective performance of implicit schemes. The main results highlight the key roles played by the algorithmic scaling of stress-balance solvers and coupled, implicit-step solvers. |
format |
Article in Journal/Newspaper |
author |
Bueler, Ed |
author_facet |
Bueler, Ed |
author_sort |
Bueler, Ed |
title |
Performance analysis of high-resolution ice-sheet simulations |
title_short |
Performance analysis of high-resolution ice-sheet simulations |
title_full |
Performance analysis of high-resolution ice-sheet simulations |
title_fullStr |
Performance analysis of high-resolution ice-sheet simulations |
title_full_unstemmed |
Performance analysis of high-resolution ice-sheet simulations |
title_sort |
performance analysis of high-resolution ice-sheet simulations |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/jog.2022.113 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022001137 |
genre |
Ice Sheet Journal of Glaciology |
genre_facet |
Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology volume 69, issue 276, page 930-935 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2022.113 |
container_title |
Journal of Glaciology |
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1 |
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6 |
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1792500967049003008 |