Parameter sensitivity analysis of dynamic ice sheet models-Numerical computations
The friction coefficient and the base topography of a stationary and a dynamic ice sheet are perturbed in two models for the ice: the full Stokes equations and the shallow shelf approximation. The sensitivity to the perturbations of the velocity and the height at the surface is quantified by solving...
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ftcopernicus:oai:publications.copernicus.org:tcd77627 2023-05-15T16:40:08+02:00 Parameter sensitivity analysis of dynamic ice sheet models-Numerical computations Cheng, Gong Lötstedt, Per 2019-08-12 application/pdf https://doi.org/10.5194/tc-2019-151 https://www.the-cryosphere-discuss.net/tc-2019-151/ eng eng doi:10.5194/tc-2019-151 https://www.the-cryosphere-discuss.net/tc-2019-151/ eISSN: 1994-0424 Text 2019 ftcopernicus https://doi.org/10.5194/tc-2019-151 2019-12-24T09:48:43Z The friction coefficient and the base topography of a stationary and a dynamic ice sheet are perturbed in two models for the ice: the full Stokes equations and the shallow shelf approximation. The sensitivity to the perturbations of the velocity and the height at the surface is quantified by solving the adjoint equations of the stress and the height equations providing weights for the perturbed data. The adjoint equations are solved numerically and the sensitivity is computed in several examples in two dimensions. Comparisons are made with analytical solutions to simplified problems. Text Ice Sheet Copernicus Publications: E-Journals |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
The friction coefficient and the base topography of a stationary and a dynamic ice sheet are perturbed in two models for the ice: the full Stokes equations and the shallow shelf approximation. The sensitivity to the perturbations of the velocity and the height at the surface is quantified by solving the adjoint equations of the stress and the height equations providing weights for the perturbed data. The adjoint equations are solved numerically and the sensitivity is computed in several examples in two dimensions. Comparisons are made with analytical solutions to simplified problems. |
format |
Text |
author |
Cheng, Gong Lötstedt, Per |
spellingShingle |
Cheng, Gong Lötstedt, Per Parameter sensitivity analysis of dynamic ice sheet models-Numerical computations |
author_facet |
Cheng, Gong Lötstedt, Per |
author_sort |
Cheng, Gong |
title |
Parameter sensitivity analysis of dynamic ice sheet models-Numerical computations |
title_short |
Parameter sensitivity analysis of dynamic ice sheet models-Numerical computations |
title_full |
Parameter sensitivity analysis of dynamic ice sheet models-Numerical computations |
title_fullStr |
Parameter sensitivity analysis of dynamic ice sheet models-Numerical computations |
title_full_unstemmed |
Parameter sensitivity analysis of dynamic ice sheet models-Numerical computations |
title_sort |
parameter sensitivity analysis of dynamic ice sheet models-numerical computations |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-2019-151 https://www.the-cryosphere-discuss.net/tc-2019-151/ |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-2019-151 https://www.the-cryosphere-discuss.net/tc-2019-151/ |
op_doi |
https://doi.org/10.5194/tc-2019-151 |
_version_ |
1766030506576576512 |