Performance analysis of high-resolution ice-sheet simulations
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 shor...
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Cambridge University Press
2023
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ftdoajarticles:oai:doaj.org/article:2fb1f68be37f445da3ab3cf226b62eb3 2023-08-20T04:07:14+02:00 Performance analysis of high-resolution ice-sheet simulations Ed Bueler 2023-08-01T00:00:00Z https://doi.org/10.1017/jog.2022.113 https://doaj.org/article/2fb1f68be37f445da3ab3cf226b62eb3 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143022001137/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.113 0022-1430 1727-5652 https://doaj.org/article/2fb1f68be37f445da3ab3cf226b62eb3 Journal of Glaciology, Vol 69, Pp 930-935 (2023) Glacier flow glacier modeling ice-sheet modeling Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.1017/jog.2022.113 2023-07-30T00:36:44Z 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 Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 1 6 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Glacier flow glacier modeling ice-sheet modeling Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Glacier flow glacier modeling ice-sheet modeling Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Ed Bueler Performance analysis of high-resolution ice-sheet simulations |
topic_facet |
Glacier flow glacier modeling ice-sheet modeling Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
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 |
Ed Bueler |
author_facet |
Ed Bueler |
author_sort |
Ed Bueler |
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 |
publishDate |
2023 |
url |
https://doi.org/10.1017/jog.2022.113 https://doaj.org/article/2fb1f68be37f445da3ab3cf226b62eb3 |
genre |
Ice Sheet Journal of Glaciology |
genre_facet |
Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 69, Pp 930-935 (2023) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143022001137/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.113 0022-1430 1727-5652 https://doaj.org/article/2fb1f68be37f445da3ab3cf226b62eb3 |
op_doi |
https://doi.org/10.1017/jog.2022.113 |
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Journal of Glaciology |
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1 |
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6 |
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1774718717812277248 |