Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements
International audience Mass balance observations are very useful to assess climate change in different regions of the world. As opposed to glacier-wide mass balances which are influenced by the dynamic response of each glacier, point mass balances provide a direct climatic signal that depends on sur...
Published in: | The Cryosphere |
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Main Authors: | , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Subjects: | |
Online Access: | https://hal.science/hal-03454622 https://hal.science/hal-03454622/document https://hal.science/hal-03454622/file/Vincent2021.pdf https://doi.org/10.5194/tc-15-1259-2021 |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
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language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Vincent, Christian Cusicanqui, Diego Jourdain, Bruno Laarman, Olivier Six, Delphine Gilbert, Adrien Walpersdorf, Andrea Rabatel, Antoine Piard, Luc Gimbert, Florent Gagliardini, Olivier Peyaud, Vincent Arnaud, Laurent Thibert, Emmanuel Brun, Fanny Nanni, Ugo Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Mass balance observations are very useful to assess climate change in different regions of the world. As opposed to glacier-wide mass balances which are influenced by the dynamic response of each glacier, point mass balances provide a direct climatic signal that depends on surface accumulation and ablation only. Unfortunately, major efforts are required to conduct in situ measurements on glaciers. Here, we propose a new approach that determines point surface mass balances from remote sensing observations. We call this balance the geodetic point surface mass balance. From observations and modelling performed on the Argentière and Mer de Glace glaciers over the last decade, we show that the vertical ice flow velocity changes are small in areas of low bedrock slope. Therefore, assuming constant vertical velocities in time for such areas and provided that the vertical velocities have been measured for at least 1 year in the past, our method can be used to reconstruct annual point surface mass balances from surface elevations and horizontal velocities alone. We demonstrate that the annual point surface mass balances can be reconstructed with an accuracy of about 0.3 m of water equivalent per year (m w.e. a −1) using the vertical velocities observed over the previous years and data from unmanned aerial vehicle images. Given the recent improvements of satellite sensors, it should be possible to apply this method to high-spatial-resolution satellite images as well. |
author2 |
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)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Environnements, Dynamiques et Territoires de la Montagne (EDYTEM) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) Institut des Sciences de la Terre (ISTerre) Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement IRD : UR219-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA) Erosion torrentielle neige et avalanches (UR ETGR (ETNA)) Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) French National Research Agency (ANR) European Commission French National Research Agency (ANR) 18 CE1 0015 01 |
format |
Article in Journal/Newspaper |
author |
Vincent, Christian Cusicanqui, Diego Jourdain, Bruno Laarman, Olivier Six, Delphine Gilbert, Adrien Walpersdorf, Andrea Rabatel, Antoine Piard, Luc Gimbert, Florent Gagliardini, Olivier Peyaud, Vincent Arnaud, Laurent Thibert, Emmanuel Brun, Fanny Nanni, Ugo |
author_facet |
Vincent, Christian Cusicanqui, Diego Jourdain, Bruno Laarman, Olivier Six, Delphine Gilbert, Adrien Walpersdorf, Andrea Rabatel, Antoine Piard, Luc Gimbert, Florent Gagliardini, Olivier Peyaud, Vincent Arnaud, Laurent Thibert, Emmanuel Brun, Fanny Nanni, Ugo |
author_sort |
Vincent, Christian |
title |
Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements |
title_short |
Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements |
title_full |
Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements |
title_fullStr |
Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements |
title_full_unstemmed |
Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements |
title_sort |
geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03454622 https://hal.science/hal-03454622/document https://hal.science/hal-03454622/file/Vincent2021.pdf https://doi.org/10.5194/tc-15-1259-2021 |
long_lat |
ENVELOPE(-37.133,-37.133,-54.117,-54.117) |
geographic |
Glacier Point |
geographic_facet |
Glacier Point |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-03454622 The Cryosphere, 2021, 15 (3), pp.1259 - 1276. ⟨10.5194/tc-15-1259-2021⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-15-1259-2021 hal-03454622 https://hal.science/hal-03454622 https://hal.science/hal-03454622/document https://hal.science/hal-03454622/file/Vincent2021.pdf doi:10.5194/tc-15-1259-2021 WOS: 000627724000001 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-15-1259-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
3 |
container_start_page |
1259 |
op_container_end_page |
1276 |
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1766216258507767808 |
spelling |
ftunivnantes:oai:HAL:hal-03454622v1 2023-05-15T18:32:11+02:00 Geodetic point surface mass balances: a new approach to determine point surface mass balances on glaciers from remote sensing measurements Vincent, Christian Cusicanqui, Diego Jourdain, Bruno Laarman, Olivier Six, Delphine Gilbert, Adrien Walpersdorf, Andrea Rabatel, Antoine Piard, Luc Gimbert, Florent Gagliardini, Olivier Peyaud, Vincent Arnaud, Laurent Thibert, Emmanuel Brun, Fanny Nanni, Ugo 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)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Environnements, Dynamiques et Territoires de la Montagne (EDYTEM) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS) Institut des Sciences de la Terre (ISTerre) Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement IRD : UR219-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA) Erosion torrentielle neige et avalanches (UR ETGR (ETNA)) Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) French National Research Agency (ANR) European Commission French National Research Agency (ANR) 18 CE1 0015 01 2021-03-10 https://hal.science/hal-03454622 https://hal.science/hal-03454622/document https://hal.science/hal-03454622/file/Vincent2021.pdf https://doi.org/10.5194/tc-15-1259-2021 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-15-1259-2021 hal-03454622 https://hal.science/hal-03454622 https://hal.science/hal-03454622/document https://hal.science/hal-03454622/file/Vincent2021.pdf doi:10.5194/tc-15-1259-2021 WOS: 000627724000001 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-03454622 The Cryosphere, 2021, 15 (3), pp.1259 - 1276. ⟨10.5194/tc-15-1259-2021⟩ [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2021 ftunivnantes https://doi.org/10.5194/tc-15-1259-2021 2023-03-08T02:22:41Z International audience Mass balance observations are very useful to assess climate change in different regions of the world. As opposed to glacier-wide mass balances which are influenced by the dynamic response of each glacier, point mass balances provide a direct climatic signal that depends on surface accumulation and ablation only. Unfortunately, major efforts are required to conduct in situ measurements on glaciers. Here, we propose a new approach that determines point surface mass balances from remote sensing observations. We call this balance the geodetic point surface mass balance. From observations and modelling performed on the Argentière and Mer de Glace glaciers over the last decade, we show that the vertical ice flow velocity changes are small in areas of low bedrock slope. Therefore, assuming constant vertical velocities in time for such areas and provided that the vertical velocities have been measured for at least 1 year in the past, our method can be used to reconstruct annual point surface mass balances from surface elevations and horizontal velocities alone. We demonstrate that the annual point surface mass balances can be reconstructed with an accuracy of about 0.3 m of water equivalent per year (m w.e. a −1) using the vertical velocities observed over the previous years and data from unmanned aerial vehicle images. Given the recent improvements of satellite sensors, it should be possible to apply this method to high-spatial-resolution satellite images as well. Article in Journal/Newspaper The Cryosphere Université de Nantes: HAL-UNIV-NANTES Glacier Point ENVELOPE(-37.133,-37.133,-54.117,-54.117) The Cryosphere 15 3 1259 1276 |