Last Glacial Maximum precipitation pattern in the Alps inferred from glacier modelling
During the Last Glacial Maximum (LGM), glaciers in the Alps reached a maximum extent, and broad sections of the foreland were covered by ice. In this study, we simulated the alpine ice cap using a glacier flow model to constrain the prevailing precipitation pattern with a geomorphological reconstruc...
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Online Access: | https://doi.org/10.5194/gh-71-173-2016 https://gh.copernicus.org/articles/71/173/2016/ |
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ftcopernicus:oai:publications.copernicus.org:gh51340 2023-05-15T16:38:08+02:00 Last Glacial Maximum precipitation pattern in the Alps inferred from glacier modelling Becker, Patrick Seguinot, Julien Jouvet, Guillaume Funk, Martin 2018-01-15 application/pdf https://doi.org/10.5194/gh-71-173-2016 https://gh.copernicus.org/articles/71/173/2016/ eng eng doi:10.5194/gh-71-173-2016 https://gh.copernicus.org/articles/71/173/2016/ eISSN: 2194-8798 Text 2018 ftcopernicus https://doi.org/10.5194/gh-71-173-2016 2020-07-20T16:24:02Z During the Last Glacial Maximum (LGM), glaciers in the Alps reached a maximum extent, and broad sections of the foreland were covered by ice. In this study, we simulated the alpine ice cap using a glacier flow model to constrain the prevailing precipitation pattern with a geomorphological reconstruction of ice extent. For this purpose we forced the model using different temperature cooling and precipitation reduction factors. The use of the present-day precipitation pattern led to a systematic overestimation of the ice cover on the northern part of the Alps relative to the southern part. To reproduce the LGM ice cap, a more severe decrease in precipitation in the north than in the south was required. This result supports a southwesterly advection of atmospheric moisture to the Alps, sustained by a southward shift of the North Atlantic storm track during the LGM. Text Ice cap North Atlantic Copernicus Publications: E-Journals Geographica Helvetica 71 3 173 187 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
During the Last Glacial Maximum (LGM), glaciers in the Alps reached a maximum extent, and broad sections of the foreland were covered by ice. In this study, we simulated the alpine ice cap using a glacier flow model to constrain the prevailing precipitation pattern with a geomorphological reconstruction of ice extent. For this purpose we forced the model using different temperature cooling and precipitation reduction factors. The use of the present-day precipitation pattern led to a systematic overestimation of the ice cover on the northern part of the Alps relative to the southern part. To reproduce the LGM ice cap, a more severe decrease in precipitation in the north than in the south was required. This result supports a southwesterly advection of atmospheric moisture to the Alps, sustained by a southward shift of the North Atlantic storm track during the LGM. |
format |
Text |
author |
Becker, Patrick Seguinot, Julien Jouvet, Guillaume Funk, Martin |
spellingShingle |
Becker, Patrick Seguinot, Julien Jouvet, Guillaume Funk, Martin Last Glacial Maximum precipitation pattern in the Alps inferred from glacier modelling |
author_facet |
Becker, Patrick Seguinot, Julien Jouvet, Guillaume Funk, Martin |
author_sort |
Becker, Patrick |
title |
Last Glacial Maximum precipitation pattern in the Alps inferred from glacier modelling |
title_short |
Last Glacial Maximum precipitation pattern in the Alps inferred from glacier modelling |
title_full |
Last Glacial Maximum precipitation pattern in the Alps inferred from glacier modelling |
title_fullStr |
Last Glacial Maximum precipitation pattern in the Alps inferred from glacier modelling |
title_full_unstemmed |
Last Glacial Maximum precipitation pattern in the Alps inferred from glacier modelling |
title_sort |
last glacial maximum precipitation pattern in the alps inferred from glacier modelling |
publishDate |
2018 |
url |
https://doi.org/10.5194/gh-71-173-2016 https://gh.copernicus.org/articles/71/173/2016/ |
genre |
Ice cap North Atlantic |
genre_facet |
Ice cap North Atlantic |
op_source |
eISSN: 2194-8798 |
op_relation |
doi:10.5194/gh-71-173-2016 https://gh.copernicus.org/articles/71/173/2016/ |
op_doi |
https://doi.org/10.5194/gh-71-173-2016 |
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Geographica Helvetica |
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71 |
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3 |
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173 |
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187 |
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1766028419911385088 |