Robust reconstruction of glacier beds using transient 2D assimilation with Stokes
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 poss...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2023-10-01
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| Series: | Journal of Glaciology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0022143023000266/type/journal_article |
| _version_ | 1797652236806914048 |
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| author | Samuel Cook Fabien Gillet-Chaulet Johannes Fürst |
| author_facet | Samuel Cook Fabien Gillet-Chaulet Johannes Fürst |
| author_sort | Samuel Cook |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-11T16:27:07Z |
| format | Article |
| id | doaj.art-5499c82f2e5644d68262e404daa5ca96 |
| institution | Directory Open Access Journal |
| issn | 0022-1430 1727-5652 |
| language | English |
| last_indexed | 2024-03-11T16:27:07Z |
| publishDate | 2023-10-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Glaciology |
| spelling | doaj.art-5499c82f2e5644d68262e404daa5ca962023-10-24T09:48:09ZengCambridge University PressJournal of Glaciology0022-14301727-56522023-10-01691393140210.1017/jog.2023.26Robust reconstruction of glacier beds using transient 2D assimilation with StokesSamuel Cook0https://orcid.org/0000-0002-3266-7323Fabien Gillet-Chaulet1https://orcid.org/0000-0001-6592-3840Johannes Fürst2https://orcid.org/0000-0003-3988-5849Institut des Géosciences de l'Environnement, Université Grenoble Alpes, Grenoble, France Now at Faculté des Géosciences et de l'Environnement, Université de Lausanne, Lausanne, SwitzerlandInstitut des Géosciences de l'Environnement, Université Grenoble Alpes, Grenoble, FranceInstitute of Geography, Friedrich-Alexander-Universität, Erlangen, GermanyInitialising 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.https://www.cambridge.org/core/product/identifier/S0022143023000266/type/journal_articleGlacier modellingglaciological model experimentsmountain glaciers |
| spellingShingle | Samuel Cook Fabien Gillet-Chaulet Johannes Fürst Robust reconstruction of glacier beds using transient 2D assimilation with Stokes Journal of Glaciology Glacier modelling glaciological model experiments mountain glaciers |
| title | 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_short | Robust reconstruction of glacier beds using transient 2D assimilation with Stokes |
| title_sort | robust reconstruction of glacier beds using transient 2d assimilation with stokes |
| topic | Glacier modelling glaciological model experiments mountain glaciers |
| url | https://www.cambridge.org/core/product/identifier/S0022143023000266/type/journal_article |
| work_keys_str_mv | AT samuelcook robustreconstructionofglacierbedsusingtransient2dassimilationwithstokes AT fabiengilletchaulet robustreconstructionofglacierbedsusingtransient2dassimilationwithstokes AT johannesfurst robustreconstructionofglacierbedsusingtransient2dassimilationwithstokes |