Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year
International audience Widespread glacier losses have been observed in most glaciated regions on Earth during recent decades, with a typical pattern of strong thinning in their lower reaches and limited elevation changes in their accumulation areas. Here, we use Pléiades satellite stereo-images of t...
Published in: | Journal of Glaciology |
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Online Access: | https://hal.science/hal-04405804 https://hal.science/hal-04405804/document https://hal.science/hal-04405804/file/exceptional-thinning-through-the-entire-altitudinal-range-of-mont-blanc-glaciers-during-the-202122-mass-balance-year.pdf https://doi.org/10.1017/jog.2023.100 |
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ftutoulouse3hal:oai:HAL:hal-04405804v1 2024-09-15T18:15:41+00:00 Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year Berthier, Etienne Vincent, Christian Six, Delphine Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 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) 2023-11-29 https://hal.science/hal-04405804 https://hal.science/hal-04405804/document https://hal.science/hal-04405804/file/exceptional-thinning-through-the-entire-altitudinal-range-of-mont-blanc-glaciers-during-the-202122-mass-balance-year.pdf https://doi.org/10.1017/jog.2023.100 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2023.100 hal-04405804 https://hal.science/hal-04405804 https://hal.science/hal-04405804/document https://hal.science/hal-04405804/file/exceptional-thinning-through-the-entire-altitudinal-range-of-mont-blanc-glaciers-during-the-202122-mass-balance-year.pdf doi:10.1017/jog.2023.100 info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-04405804 Journal of Glaciology, 2023, pp.1-6. ⟨10.1017/jog.2023.100⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2023 ftutoulouse3hal https://doi.org/10.1017/jog.2023.100 2024-06-25T00:03:52Z International audience Widespread glacier losses have been observed in most glaciated regions on Earth during recent decades, with a typical pattern of strong thinning in their lower reaches and limited elevation changes in their accumulation areas. Here, we use Pléiades satellite stereo-images of the Mont-Blanc massif (Alps) to reveal that thinning took place through the entire elevation range during the exceptional 2021/22 mass-balance year. Above 3000 m a.s.l. on Argentière glacier and Mer de Glace, thinning rates exceeded 3.5 m a −1 while almost no change occurred during the previous 9 years. Below 3000 m a.s.l., these anomalous thinning rates are essentially explained by changes in surface mass balance. At higher altitudes, other processes such as firn densification may play a role. Our analysis shows that high altitude glaciers, mostly stable during the last 100 years, are now responding to the impact of climate change. Article in Journal/Newspaper Journal of Glaciology Université Toulouse III - Paul Sabatier: HAL-UPS Journal of Glaciology 1 6 |
institution |
Open Polar |
collection |
Université Toulouse III - Paul Sabatier: HAL-UPS |
op_collection_id |
ftutoulouse3hal |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Berthier, Etienne Vincent, Christian Six, Delphine Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Widespread glacier losses have been observed in most glaciated regions on Earth during recent decades, with a typical pattern of strong thinning in their lower reaches and limited elevation changes in their accumulation areas. Here, we use Pléiades satellite stereo-images of the Mont-Blanc massif (Alps) to reveal that thinning took place through the entire elevation range during the exceptional 2021/22 mass-balance year. Above 3000 m a.s.l. on Argentière glacier and Mer de Glace, thinning rates exceeded 3.5 m a −1 while almost no change occurred during the previous 9 years. Below 3000 m a.s.l., these anomalous thinning rates are essentially explained by changes in surface mass balance. At higher altitudes, other processes such as firn densification may play a role. Our analysis shows that high altitude glaciers, mostly stable during the last 100 years, are now responding to the impact of climate change. |
author2 |
Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 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) |
format |
Article in Journal/Newspaper |
author |
Berthier, Etienne Vincent, Christian Six, Delphine |
author_facet |
Berthier, Etienne Vincent, Christian Six, Delphine |
author_sort |
Berthier, Etienne |
title |
Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year |
title_short |
Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year |
title_full |
Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year |
title_fullStr |
Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year |
title_full_unstemmed |
Exceptional thinning through the entire altitudinal range of Mont-Blanc glaciers during the 2021/22 mass balance year |
title_sort |
exceptional thinning through the entire altitudinal range of mont-blanc glaciers during the 2021/22 mass balance year |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04405804 https://hal.science/hal-04405804/document https://hal.science/hal-04405804/file/exceptional-thinning-through-the-entire-altitudinal-range-of-mont-blanc-glaciers-during-the-202122-mass-balance-year.pdf https://doi.org/10.1017/jog.2023.100 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-04405804 Journal of Glaciology, 2023, pp.1-6. ⟨10.1017/jog.2023.100⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2023.100 hal-04405804 https://hal.science/hal-04405804 https://hal.science/hal-04405804/document https://hal.science/hal-04405804/file/exceptional-thinning-through-the-entire-altitudinal-range-of-mont-blanc-glaciers-during-the-202122-mass-balance-year.pdf doi:10.1017/jog.2023.100 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1017/jog.2023.100 |
container_title |
Journal of Glaciology |
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1 |
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6 |
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1810453614276116480 |