A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models
Abstract In this study, we investigate the differences between two transient, three-dimensional, thermomechanically coupled ice-sheet models, namely, a first-order approximation model (FOM) and a ‘full’ Stokes ice-sheet model (FSM) under the same numerical framework. For all numerical experiments, w...
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Online Access: | http://dx.doi.org/10.1017/jog.2022.77 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000776 |
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crcambridgeupr:10.1017/jog.2022.77 2024-06-23T07:53:46+00:00 A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models Yan, Zhan Leng, Wei Wang, Yuzhe Xiao, Cunde Zhang, Tong State Key Laboratory of Earth Surface Processes and Resource Ecology Fundamental Research Funds for the Central Universities National Key Research and Development Program of China 2022 http://dx.doi.org/10.1017/jog.2022.77 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000776 en eng Cambridge University Press (CUP) https://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 69, issue 275, page 513-524 ISSN 0022-1430 1727-5652 journal-article 2022 crcambridgeupr https://doi.org/10.1017/jog.2022.77 2024-06-05T04:03:00Z Abstract In this study, we investigate the differences between two transient, three-dimensional, thermomechanically coupled ice-sheet models, namely, a first-order approximation model (FOM) and a ‘full’ Stokes ice-sheet model (FSM) under the same numerical framework. For all numerical experiments, we take the FSM outputs as the reference values and calculate the mean relative errors in the velocity and temperature fields for the FOM over 100 years. Four different boundary conditions (ice slope, geothermal heat flux, basal topography and basal sliding) are tested, and by changing these parameters, we verify the thermomechanical behavior of the FOM and discover that the velocity and temperature biases of the FOM generally increase with increases in the ice slope, geothermal heat flux, undulation amplitude of the ice base, and with the existence of basal sliding. In addition, the model difference between the FOM and FSM may accumulate over time, and the spatial distribution patterns of the relative velocity and temperature errors are in good agreement. Article in Journal/Newspaper Ice Sheet Journal of Glaciology Cambridge University Press Journal of Glaciology 1 12 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract In this study, we investigate the differences between two transient, three-dimensional, thermomechanically coupled ice-sheet models, namely, a first-order approximation model (FOM) and a ‘full’ Stokes ice-sheet model (FSM) under the same numerical framework. For all numerical experiments, we take the FSM outputs as the reference values and calculate the mean relative errors in the velocity and temperature fields for the FOM over 100 years. Four different boundary conditions (ice slope, geothermal heat flux, basal topography and basal sliding) are tested, and by changing these parameters, we verify the thermomechanical behavior of the FOM and discover that the velocity and temperature biases of the FOM generally increase with increases in the ice slope, geothermal heat flux, undulation amplitude of the ice base, and with the existence of basal sliding. In addition, the model difference between the FOM and FSM may accumulate over time, and the spatial distribution patterns of the relative velocity and temperature errors are in good agreement. |
author2 |
State Key Laboratory of Earth Surface Processes and Resource Ecology Fundamental Research Funds for the Central Universities National Key Research and Development Program of China |
format |
Article in Journal/Newspaper |
author |
Yan, Zhan Leng, Wei Wang, Yuzhe Xiao, Cunde Zhang, Tong |
spellingShingle |
Yan, Zhan Leng, Wei Wang, Yuzhe Xiao, Cunde Zhang, Tong A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models |
author_facet |
Yan, Zhan Leng, Wei Wang, Yuzhe Xiao, Cunde Zhang, Tong |
author_sort |
Yan, Zhan |
title |
A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models |
title_short |
A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models |
title_full |
A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models |
title_fullStr |
A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models |
title_full_unstemmed |
A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models |
title_sort |
comparison between three-dimensional, transient, thermomechanically coupled first-order and stokes ice flow models |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/jog.2022.77 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000776 |
genre |
Ice Sheet Journal of Glaciology |
genre_facet |
Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology volume 69, issue 275, page 513-524 ISSN 0022-1430 1727-5652 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2022.77 |
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Journal of Glaciology |
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1 |
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12 |
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1802645590762323968 |