The Initialization Of Basal Sliding Coefficients For Antarctica, A Lyapunov Based Approach
International audience — Models describing natural phenomena can depend on parameters that cannot be directly measured, hence the necessity to develop inverse techniques to determine them. The goal of this paper is to utilize such a technique to enable better initialization of ice sheet models for A...
Published in: | 2018 Annual American Control Conference (ACC) |
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ftunigrenoble:oai:HAL:hal-01778305v1 2024-05-12T07:55:47+00:00 The Initialization Of Basal Sliding Coefficients For Antarctica, A Lyapunov Based Approach Mourad, Firas Witrant, Emmanuel Pattyn, Frank GIPSA - Systèmes linéaires et robustesse (GIPSA-SLR) Département Automatique (GIPSA-DA) Grenoble Images Parole Signal Automatique (GIPSA-lab ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Grenoble Images Parole Signal Automatique (GIPSA-lab ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Université libre de Bruxelles (ULB) Milwaukee, United States 2018-06-27 https://hal.science/hal-01778305 https://hal.science/hal-01778305/document https://hal.science/hal-01778305/file/2018ACC_0570_FI.pdf https://doi.org/10.23919/ACC.2018.8431855 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.23919/ACC.2018.8431855 hal-01778305 https://hal.science/hal-01778305 https://hal.science/hal-01778305/document https://hal.science/hal-01778305/file/2018ACC_0570_FI.pdf doi:10.23919/ACC.2018.8431855 info:eu-repo/semantics/OpenAccess ACC 2018 - American Control Conference https://hal.science/hal-01778305 ACC 2018 - American Control Conference, Jun 2018, Milwaukee, United States. ⟨10.23919/ACC.2018.8431855⟩ https://acc2018.a2c2.org/ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering info:eu-repo/semantics/conferenceObject Conference papers 2018 ftunigrenoble https://doi.org/10.23919/ACC.2018.8431855 2024-04-18T03:59:18Z International audience — Models describing natural phenomena can depend on parameters that cannot be directly measured, hence the necessity to develop inverse techniques to determine them. The goal of this paper is to utilize such a technique to enable better initialization of ice sheet models for Antarctica. This will enable models to produce better forecasts as part of climate studies. The parameter of interest is the basal sliding coefficient, which characterizes the contact of the ice sheet with the bed underneath. A Lyapunov based approach is proposed to control the convergence of the 1D inhomogeneous transport model toward a feasible equilibrium matching the measurements. This method results in a new update law for the coefficient inversion. The results, which show an improved convergence toward the observed ice thickness, are compared with a currently used inverse method. Conference Object Antarc* Antarctica Ice Sheet Université Grenoble Alpes: HAL 2018 Annual American Control Conference (ACC) 3014 3019 |
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Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering Mourad, Firas Witrant, Emmanuel Pattyn, Frank The Initialization Of Basal Sliding Coefficients For Antarctica, A Lyapunov Based Approach |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering |
description |
International audience — Models describing natural phenomena can depend on parameters that cannot be directly measured, hence the necessity to develop inverse techniques to determine them. The goal of this paper is to utilize such a technique to enable better initialization of ice sheet models for Antarctica. This will enable models to produce better forecasts as part of climate studies. The parameter of interest is the basal sliding coefficient, which characterizes the contact of the ice sheet with the bed underneath. A Lyapunov based approach is proposed to control the convergence of the 1D inhomogeneous transport model toward a feasible equilibrium matching the measurements. This method results in a new update law for the coefficient inversion. The results, which show an improved convergence toward the observed ice thickness, are compared with a currently used inverse method. |
author2 |
GIPSA - Systèmes linéaires et robustesse (GIPSA-SLR) Département Automatique (GIPSA-DA) Grenoble Images Parole Signal Automatique (GIPSA-lab ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Grenoble Images Parole Signal Automatique (GIPSA-lab ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Université libre de Bruxelles (ULB) |
format |
Conference Object |
author |
Mourad, Firas Witrant, Emmanuel Pattyn, Frank |
author_facet |
Mourad, Firas Witrant, Emmanuel Pattyn, Frank |
author_sort |
Mourad, Firas |
title |
The Initialization Of Basal Sliding Coefficients For Antarctica, A Lyapunov Based Approach |
title_short |
The Initialization Of Basal Sliding Coefficients For Antarctica, A Lyapunov Based Approach |
title_full |
The Initialization Of Basal Sliding Coefficients For Antarctica, A Lyapunov Based Approach |
title_fullStr |
The Initialization Of Basal Sliding Coefficients For Antarctica, A Lyapunov Based Approach |
title_full_unstemmed |
The Initialization Of Basal Sliding Coefficients For Antarctica, A Lyapunov Based Approach |
title_sort |
initialization of basal sliding coefficients for antarctica, a lyapunov based approach |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-01778305 https://hal.science/hal-01778305/document https://hal.science/hal-01778305/file/2018ACC_0570_FI.pdf https://doi.org/10.23919/ACC.2018.8431855 |
op_coverage |
Milwaukee, United States |
genre |
Antarc* Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctica Ice Sheet |
op_source |
ACC 2018 - American Control Conference https://hal.science/hal-01778305 ACC 2018 - American Control Conference, Jun 2018, Milwaukee, United States. ⟨10.23919/ACC.2018.8431855⟩ https://acc2018.a2c2.org/ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.23919/ACC.2018.8431855 hal-01778305 https://hal.science/hal-01778305 https://hal.science/hal-01778305/document https://hal.science/hal-01778305/file/2018ACC_0570_FI.pdf doi:10.23919/ACC.2018.8431855 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.23919/ACC.2018.8431855 |
container_title |
2018 Annual American Control Conference (ACC) |
container_start_page |
3014 |
op_container_end_page |
3019 |
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1798835633631789056 |