Robust reconstruction of glacier beds using transient 2D assimilation with Stokes
International audience Abstract Initialising model glaciers such that they match well with their real counterparts and are thus able to make more accurate predictions is an ongoing challenge in glacier modelling. We set out a data-assimilation approach using an ensemble Kalman filter in a 2D flowlin...
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ftccsdartic:oai:HAL:hal-04297047v1 2023-12-24T10:18:08+01:00 Robust reconstruction of glacier beds using transient 2D assimilation with Stokes Cook, Samuel Gillet-Chaulet, Fabien Fürst, Johannes Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Friedrich-Alexander Universität Erlangen-Nürnberg = University of Erlangen-Nuremberg (FAU) 2023-05-12 https://hal.science/hal-04297047 https://hal.science/hal-04297047/document https://hal.science/hal-04297047/file/robust-reconstruction-of-glacier-beds-using-transient-2d-assimilation-with-stokes.pdf https://doi.org/10.1017/jog.2023.26 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2023.26 hal-04297047 https://hal.science/hal-04297047 https://hal.science/hal-04297047/document https://hal.science/hal-04297047/file/robust-reconstruction-of-glacier-beds-using-transient-2d-assimilation-with-stokes.pdf doi:10.1017/jog.2023.26 info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-04297047 Journal of Glaciology, 2023, 69 (277), pp.1393-1402. ⟨10.1017/jog.2023.26⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2023 ftccsdartic https://doi.org/10.1017/jog.2023.26 2023-11-25T23:38:04Z International audience Abstract Initialising model glaciers such that they match well with their real counterparts and are thus able to make more accurate predictions is an ongoing challenge in glacier modelling. We set out a data-assimilation approach using an ensemble Kalman filter in a 2D flowline example that provides one possible solution to this problem. We show that our approach is valid across a range of parameters and scenarios, including deliberately data-deficient or inaccurate ones, and leads to robust retrieval of the glacier bed. We also provide some suggestions for how best to use data assimilation within a mountain-glacier context. Article in Journal/Newspaper Journal of Glaciology Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Glaciology 69 277 1393 1402 |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Cook, Samuel Gillet-Chaulet, Fabien Fürst, Johannes Robust reconstruction of glacier beds using transient 2D assimilation with Stokes |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Abstract Initialising model glaciers such that they match well with their real counterparts and are thus able to make more accurate predictions is an ongoing challenge in glacier modelling. We set out a data-assimilation approach using an ensemble Kalman filter in a 2D flowline example that provides one possible solution to this problem. We show that our approach is valid across a range of parameters and scenarios, including deliberately data-deficient or inaccurate ones, and leads to robust retrieval of the glacier bed. We also provide some suggestions for how best to use data assimilation within a mountain-glacier context. |
author2 |
Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Friedrich-Alexander Universität Erlangen-Nürnberg = University of Erlangen-Nuremberg (FAU) |
format |
Article in Journal/Newspaper |
author |
Cook, Samuel Gillet-Chaulet, Fabien Fürst, Johannes |
author_facet |
Cook, Samuel Gillet-Chaulet, Fabien Fürst, Johannes |
author_sort |
Cook, Samuel |
title |
Robust reconstruction of glacier beds using transient 2D assimilation with Stokes |
title_short |
Robust reconstruction of glacier beds using transient 2D assimilation with Stokes |
title_full |
Robust reconstruction of glacier beds using transient 2D assimilation with Stokes |
title_fullStr |
Robust reconstruction of glacier beds using transient 2D assimilation with Stokes |
title_full_unstemmed |
Robust reconstruction of glacier beds using transient 2D assimilation with Stokes |
title_sort |
robust reconstruction of glacier beds using transient 2d assimilation with stokes |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04297047 https://hal.science/hal-04297047/document https://hal.science/hal-04297047/file/robust-reconstruction-of-glacier-beds-using-transient-2d-assimilation-with-stokes.pdf https://doi.org/10.1017/jog.2023.26 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-04297047 Journal of Glaciology, 2023, 69 (277), pp.1393-1402. ⟨10.1017/jog.2023.26⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2023.26 hal-04297047 https://hal.science/hal-04297047 https://hal.science/hal-04297047/document https://hal.science/hal-04297047/file/robust-reconstruction-of-glacier-beds-using-transient-2d-assimilation-with-stokes.pdf doi:10.1017/jog.2023.26 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1017/jog.2023.26 |
container_title |
Journal of Glaciology |
container_volume |
69 |
container_issue |
277 |
container_start_page |
1393 |
op_container_end_page |
1402 |
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1786206861203079168 |