Numerical stabilization methods for level-set-based ice front migration
Numerical modeling of ice sheet dynamics is a critical tool for projecting future sea-level rise. Among all the processes responsible for the loss of mass of the ice sheets, enhanced ice discharge triggered by the retreat of marine terminating glaciers is one of the key drivers. Numerical models of...
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ftcopernicus:oai:publications.copernicus.org:gmdd115031 2023-11-12T04:18:42+01:00 Numerical stabilization methods for level-set-based ice front migration Cheng, Gong Morlighem, Mathieu Gudmundsson, G. Hilmar 2023-10-10 application/pdf https://doi.org/10.5194/gmd-2023-194 https://gmd.copernicus.org/preprints/gmd-2023-194/ eng eng doi:10.5194/gmd-2023-194 https://gmd.copernicus.org/preprints/gmd-2023-194/ eISSN: 1991-9603 Text 2023 ftcopernicus https://doi.org/10.5194/gmd-2023-194 2023-10-16T16:24:16Z Numerical modeling of ice sheet dynamics is a critical tool for projecting future sea-level rise. Among all the processes responsible for the loss of mass of the ice sheets, enhanced ice discharge triggered by the retreat of marine terminating glaciers is one of the key drivers. Numerical models of ice sheet flow are therefore required to include ice front migration in order to reproduce today's mass loss and be able to predict their future. However, the discontinuous nature of calving poses a significant numerical challenge for accurately capturing the motion of the ice front. In this study, we explore different stabilization techniques combined with varying reinitialization strategies to enhance the numerical stability and accuracy of solving the level-set function, which tracks the position of the ice front. Through rigorous testing on an idealized domain with a semicircular and a straight-line ice front, including scenarios with diverse front velocities, we assess the performance of these techniques. The findings contribute to advancing our ability to model ice sheet dynamics, specifically calving processes, and provide valuable insights into the most effective strategies for simulating and tracking the motion of the ice front. Text Ice Sheet Copernicus Publications: E-Journals |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Numerical modeling of ice sheet dynamics is a critical tool for projecting future sea-level rise. Among all the processes responsible for the loss of mass of the ice sheets, enhanced ice discharge triggered by the retreat of marine terminating glaciers is one of the key drivers. Numerical models of ice sheet flow are therefore required to include ice front migration in order to reproduce today's mass loss and be able to predict their future. However, the discontinuous nature of calving poses a significant numerical challenge for accurately capturing the motion of the ice front. In this study, we explore different stabilization techniques combined with varying reinitialization strategies to enhance the numerical stability and accuracy of solving the level-set function, which tracks the position of the ice front. Through rigorous testing on an idealized domain with a semicircular and a straight-line ice front, including scenarios with diverse front velocities, we assess the performance of these techniques. The findings contribute to advancing our ability to model ice sheet dynamics, specifically calving processes, and provide valuable insights into the most effective strategies for simulating and tracking the motion of the ice front. |
format |
Text |
author |
Cheng, Gong Morlighem, Mathieu Gudmundsson, G. Hilmar |
spellingShingle |
Cheng, Gong Morlighem, Mathieu Gudmundsson, G. Hilmar Numerical stabilization methods for level-set-based ice front migration |
author_facet |
Cheng, Gong Morlighem, Mathieu Gudmundsson, G. Hilmar |
author_sort |
Cheng, Gong |
title |
Numerical stabilization methods for level-set-based ice front migration |
title_short |
Numerical stabilization methods for level-set-based ice front migration |
title_full |
Numerical stabilization methods for level-set-based ice front migration |
title_fullStr |
Numerical stabilization methods for level-set-based ice front migration |
title_full_unstemmed |
Numerical stabilization methods for level-set-based ice front migration |
title_sort |
numerical stabilization methods for level-set-based ice front migration |
publishDate |
2023 |
url |
https://doi.org/10.5194/gmd-2023-194 https://gmd.copernicus.org/preprints/gmd-2023-194/ |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
eISSN: 1991-9603 |
op_relation |
doi:10.5194/gmd-2023-194 https://gmd.copernicus.org/preprints/gmd-2023-194/ |
op_doi |
https://doi.org/10.5194/gmd-2023-194 |
_version_ |
1782335295077744640 |