Coupled climate-glacier modelling of the last glaciation in the Alps
Our limited knowledge of the climate prevailing over Europe during former glaciations is the main obstacle to reconstruct the past evolution of the ice coverage over the Alps by numerical modelling. To address this challenge, we perform a two-step modelling approach: First, a regional climate model...
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Cambridge University Press
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/637778 2024-02-11T10:04:53+01:00 Coupled climate-glacier modelling of the last glaciation in the Alps Jouvet, Guillaume Cohen, Denis Russo, Emmanuele Buzan, Jonathan Raible, Christoph C. Haeberli, Wilfried Kamleitner, Sarah Ivy-Ochs, Susan Imhof, Michael A. Becker, Jens K. Landgraf, Angela Fischer, Urs H. 2023 application/application/pdf https://hdl.handle.net/20.500.11850/637778 https://doi.org/10.3929/ethz-b-000637778 en eng Cambridge University Press info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2023.74 info:eu-repo/semantics/altIdentifier/wos/001076456300001 info:eu-repo/grantAgreement/SNF/Projekte MINT/162444 http://hdl.handle.net/20.500.11850/637778 doi:10.3929/ethz-b-000637778 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International Journal of Glaciology glacier modelling moraine paleoclimate info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftethz https://doi.org/20.500.11850/63777810.3929/ethz-b-00063777810.1017/jog.2023.74 2024-01-15T00:51:42Z Our limited knowledge of the climate prevailing over Europe during former glaciations is the main obstacle to reconstruct the past evolution of the ice coverage over the Alps by numerical modelling. To address this challenge, we perform a two-step modelling approach: First, a regional climate model is used to downscale the time slice simulations of a global earth system model in high resolution, leading to climate snapshots during the Last Glacial Maximum (LGM) and the Marine Isotope Stage 4 (MIS4). Second, we combine these snapshots and a climate signal proxy to build a transient climate over the last glacial period and force the Parallel Ice Sheet Model to simulate the dynamical evolution of glaciers in the Alps. The results show that the extent of modelled glaciers during the LGM agrees with several independent key geological imprints, including moraine-based maximal reconstructed glacial extents, known ice transfluences and trajectories of erratic boulders of known origin and deposition. Our results highlight the benefit of multiphysical coupled climate and glacier transient modelling over simpler approaches to help reconstruct paleo glacier fluctuations in agreement with traces they have left on the landscape. ISSN:0022-1430 ISSN:1727-5652 Article in Journal/Newspaper Ice Sheet Journal of Glaciology ETH Zürich Research Collection |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
topic |
glacier modelling moraine paleoclimate |
spellingShingle |
glacier modelling moraine paleoclimate Jouvet, Guillaume Cohen, Denis Russo, Emmanuele Buzan, Jonathan Raible, Christoph C. Haeberli, Wilfried Kamleitner, Sarah Ivy-Ochs, Susan Imhof, Michael A. Becker, Jens K. Landgraf, Angela Fischer, Urs H. Coupled climate-glacier modelling of the last glaciation in the Alps |
topic_facet |
glacier modelling moraine paleoclimate |
description |
Our limited knowledge of the climate prevailing over Europe during former glaciations is the main obstacle to reconstruct the past evolution of the ice coverage over the Alps by numerical modelling. To address this challenge, we perform a two-step modelling approach: First, a regional climate model is used to downscale the time slice simulations of a global earth system model in high resolution, leading to climate snapshots during the Last Glacial Maximum (LGM) and the Marine Isotope Stage 4 (MIS4). Second, we combine these snapshots and a climate signal proxy to build a transient climate over the last glacial period and force the Parallel Ice Sheet Model to simulate the dynamical evolution of glaciers in the Alps. The results show that the extent of modelled glaciers during the LGM agrees with several independent key geological imprints, including moraine-based maximal reconstructed glacial extents, known ice transfluences and trajectories of erratic boulders of known origin and deposition. Our results highlight the benefit of multiphysical coupled climate and glacier transient modelling over simpler approaches to help reconstruct paleo glacier fluctuations in agreement with traces they have left on the landscape. ISSN:0022-1430 ISSN:1727-5652 |
format |
Article in Journal/Newspaper |
author |
Jouvet, Guillaume Cohen, Denis Russo, Emmanuele Buzan, Jonathan Raible, Christoph C. Haeberli, Wilfried Kamleitner, Sarah Ivy-Ochs, Susan Imhof, Michael A. Becker, Jens K. Landgraf, Angela Fischer, Urs H. |
author_facet |
Jouvet, Guillaume Cohen, Denis Russo, Emmanuele Buzan, Jonathan Raible, Christoph C. Haeberli, Wilfried Kamleitner, Sarah Ivy-Ochs, Susan Imhof, Michael A. Becker, Jens K. Landgraf, Angela Fischer, Urs H. |
author_sort |
Jouvet, Guillaume |
title |
Coupled climate-glacier modelling of the last glaciation in the Alps |
title_short |
Coupled climate-glacier modelling of the last glaciation in the Alps |
title_full |
Coupled climate-glacier modelling of the last glaciation in the Alps |
title_fullStr |
Coupled climate-glacier modelling of the last glaciation in the Alps |
title_full_unstemmed |
Coupled climate-glacier modelling of the last glaciation in the Alps |
title_sort |
coupled climate-glacier modelling of the last glaciation in the alps |
publisher |
Cambridge University Press |
publishDate |
2023 |
url |
https://hdl.handle.net/20.500.11850/637778 https://doi.org/10.3929/ethz-b-000637778 |
genre |
Ice Sheet Journal of Glaciology |
genre_facet |
Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2023.74 info:eu-repo/semantics/altIdentifier/wos/001076456300001 info:eu-repo/grantAgreement/SNF/Projekte MINT/162444 http://hdl.handle.net/20.500.11850/637778 doi:10.3929/ethz-b-000637778 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_doi |
https://doi.org/20.500.11850/63777810.3929/ethz-b-00063777810.1017/jog.2023.74 |
_version_ |
1790601634116534272 |