Reanalysing the 2007–19 glaciological mass-balance series of Mera Glacier, Nepal, Central Himalaya, using geodetic mass balance
International audience The 2007–19 glaciological mass-balance series of Mera Glacier in the Everest Region, East Nepal, is reanalysed using the geodetic mass balance assessed by differencing two DEMs obtained from Pléiades stereo-images acquired in November 2012 and in October 2018. The glaciologica...
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Online Access: | https://hal-cnrs.archives-ouvertes.fr/hal-03036950 https://doi.org/10.1017/jog.2020.88 |
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ftunigrenoble:oai:HAL:hal-03036950v1 2023-05-15T16:57:26+02:00 Reanalysing the 2007–19 glaciological mass-balance series of Mera Glacier, Nepal, Central Himalaya, using geodetic mass balance Wagnon, Patrick Brun, Fanny Khadka, Arbindra Berthier, Etienne Shrestha, Dibas Vincent, Christian Arnaud, Yves Six, Delphine Dehecq, Amaury Ménégoz, Martin Jomelli, Vincent Institut des Géosciences de l’Environnement (IGE) Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS) 2020 https://hal-cnrs.archives-ouvertes.fr/hal-03036950 https://doi.org/10.1017/jog.2020.88 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2020.88 hal-03036950 https://hal-cnrs.archives-ouvertes.fr/hal-03036950 doi:10.1017/jog.2020.88 ISSN: 0022-1430 Journal of Glaciology https://hal-cnrs.archives-ouvertes.fr/hal-03036950 Journal of Glaciology, International Glaciological Society, 2020, pp.1-9. ⟨10.1017/jog.2020.88⟩ [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2020 ftunigrenoble https://doi.org/10.1017/jog.2020.88 2021-04-01T21:05:24Z International audience The 2007–19 glaciological mass-balance series of Mera Glacier in the Everest Region, East Nepal, is reanalysed using the geodetic mass balance assessed by differencing two DEMs obtained from Pléiades stereo-images acquired in November 2012 and in October 2018. The glaciological glacier-wide annual mass balance of Mera Glacier has to be systematically decreased by 0.11 m w.e. a−1 to match the geodetic mass balance. We attribute part of the positive bias of the glaciological mass balance to an over-estimation of the accumulation above 5520 m a.s.l., likely due to a measurement network unable to capture its spatial variability. Over the period 2007–19, Mera Glacier has lost mass at a rate of −0.41 ± 0.20 m w.e. a−1, in general agreement with regional averages for the central Himalaya. We observe a succession of negative mass-balance years since 2013. Article in Journal/Newspaper Journal of Glaciology Université Grenoble Alpes: HAL Journal of Glaciology 67 261 117 125 |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
[SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes Wagnon, Patrick Brun, Fanny Khadka, Arbindra Berthier, Etienne Shrestha, Dibas Vincent, Christian Arnaud, Yves Six, Delphine Dehecq, Amaury Ménégoz, Martin Jomelli, Vincent Reanalysing the 2007–19 glaciological mass-balance series of Mera Glacier, Nepal, Central Himalaya, using geodetic mass balance |
topic_facet |
[SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience The 2007–19 glaciological mass-balance series of Mera Glacier in the Everest Region, East Nepal, is reanalysed using the geodetic mass balance assessed by differencing two DEMs obtained from Pléiades stereo-images acquired in November 2012 and in October 2018. The glaciological glacier-wide annual mass balance of Mera Glacier has to be systematically decreased by 0.11 m w.e. a−1 to match the geodetic mass balance. We attribute part of the positive bias of the glaciological mass balance to an over-estimation of the accumulation above 5520 m a.s.l., likely due to a measurement network unable to capture its spatial variability. Over the period 2007–19, Mera Glacier has lost mass at a rate of −0.41 ± 0.20 m w.e. a−1, in general agreement with regional averages for the central Himalaya. We observe a succession of negative mass-balance years since 2013. |
author2 |
Institut des Géosciences de l’Environnement (IGE) Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS) |
format |
Article in Journal/Newspaper |
author |
Wagnon, Patrick Brun, Fanny Khadka, Arbindra Berthier, Etienne Shrestha, Dibas Vincent, Christian Arnaud, Yves Six, Delphine Dehecq, Amaury Ménégoz, Martin Jomelli, Vincent |
author_facet |
Wagnon, Patrick Brun, Fanny Khadka, Arbindra Berthier, Etienne Shrestha, Dibas Vincent, Christian Arnaud, Yves Six, Delphine Dehecq, Amaury Ménégoz, Martin Jomelli, Vincent |
author_sort |
Wagnon, Patrick |
title |
Reanalysing the 2007–19 glaciological mass-balance series of Mera Glacier, Nepal, Central Himalaya, using geodetic mass balance |
title_short |
Reanalysing the 2007–19 glaciological mass-balance series of Mera Glacier, Nepal, Central Himalaya, using geodetic mass balance |
title_full |
Reanalysing the 2007–19 glaciological mass-balance series of Mera Glacier, Nepal, Central Himalaya, using geodetic mass balance |
title_fullStr |
Reanalysing the 2007–19 glaciological mass-balance series of Mera Glacier, Nepal, Central Himalaya, using geodetic mass balance |
title_full_unstemmed |
Reanalysing the 2007–19 glaciological mass-balance series of Mera Glacier, Nepal, Central Himalaya, using geodetic mass balance |
title_sort |
reanalysing the 2007–19 glaciological mass-balance series of mera glacier, nepal, central himalaya, using geodetic mass balance |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal-cnrs.archives-ouvertes.fr/hal-03036950 https://doi.org/10.1017/jog.2020.88 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
ISSN: 0022-1430 Journal of Glaciology https://hal-cnrs.archives-ouvertes.fr/hal-03036950 Journal of Glaciology, International Glaciological Society, 2020, pp.1-9. ⟨10.1017/jog.2020.88⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2020.88 hal-03036950 https://hal-cnrs.archives-ouvertes.fr/hal-03036950 doi:10.1017/jog.2020.88 |
op_doi |
https://doi.org/10.1017/jog.2020.88 |
container_title |
Journal of Glaciology |
container_volume |
67 |
container_issue |
261 |
container_start_page |
117 |
op_container_end_page |
125 |
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1766048981964554240 |