Using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three French glaciers, 1994-2002
International audience Alpine glaciers are very sensitive to climate fluctuations, and their mass balance can be used as an indicator of regional-scale climate change. Here, we present a method to calculate glacier mass balance using remote-sensing data. Snowline measurements from remotely sensed im...
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ftunigrenoble:oai:HAL:insu-00374887v1 2024-05-12T08:06:17+00:00 Using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three French glaciers, 1994-2002 Rabatel, Antoine Dedieu, Jean-Pierre Vincent, Christian Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) GREAT ICE 2005 https://insu.hal.science/insu-00374887 https://insu.hal.science/insu-00374887/document https://insu.hal.science/insu-00374887/file/using-remote-sensing-data-to-determine-equilibrium-line-altitude-and-mass-balance-time-series-validation-on-three-french-glaciers-19942002.pdf https://doi.org/10.3189/172756505781829106 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.3189/172756505781829106 insu-00374887 https://insu.hal.science/insu-00374887 https://insu.hal.science/insu-00374887/document https://insu.hal.science/insu-00374887/file/using-remote-sensing-data-to-determine-equilibrium-line-altitude-and-mass-balance-time-series-validation-on-three-french-glaciers-19942002.pdf doi:10.3189/172756505781829106 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://insu.hal.science/insu-00374887 Journal of Glaciology, 2005, 51 (175), pp.539 à 546. ⟨10.3189/172756505781829106⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2005 ftunigrenoble https://doi.org/10.3189/172756505781829106 2024-04-18T03:12:00Z International audience Alpine glaciers are very sensitive to climate fluctuations, and their mass balance can be used as an indicator of regional-scale climate change. Here, we present a method to calculate glacier mass balance using remote-sensing data. Snowline measurements from remotely sensed images recorded at the end of the hydrological year provide an effective proxy of the equilibrium line. Mass balance can be deduced from the equilibrium-line altitude (ELA) variations. Three well-documented glaciers in the French Alps, where the mass balance is measured at ground level with a stake network, were selected to assess the accuracy of the method over the 1994-2002 period (eight mass-balance cycles). Results obtained by ground measurements and remote sensing are compared and show excellent correlation (r2 > 0.89), both for the ELA and for the mass balance, indicating that the remote-sensing method can be applied to glaciers where no ground data exist, on the scale of a mountain range or a given climatic area. The main differences can be attributed to discrepancies between the dates of image acquisition and field measurements. Cloud cover and recent snowfalls constitute the main restrictions of the image-based method. Article in Journal/Newspaper Journal of Glaciology Université Grenoble Alpes: HAL Ela ENVELOPE(9.642,9.642,63.170,63.170) Journal of Glaciology 51 175 539 546 |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Rabatel, Antoine Dedieu, Jean-Pierre Vincent, Christian Using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three French glaciers, 1994-2002 |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Alpine glaciers are very sensitive to climate fluctuations, and their mass balance can be used as an indicator of regional-scale climate change. Here, we present a method to calculate glacier mass balance using remote-sensing data. Snowline measurements from remotely sensed images recorded at the end of the hydrological year provide an effective proxy of the equilibrium line. Mass balance can be deduced from the equilibrium-line altitude (ELA) variations. Three well-documented glaciers in the French Alps, where the mass balance is measured at ground level with a stake network, were selected to assess the accuracy of the method over the 1994-2002 period (eight mass-balance cycles). Results obtained by ground measurements and remote sensing are compared and show excellent correlation (r2 > 0.89), both for the ELA and for the mass balance, indicating that the remote-sensing method can be applied to glaciers where no ground data exist, on the scale of a mountain range or a given climatic area. The main differences can be attributed to discrepancies between the dates of image acquisition and field measurements. Cloud cover and recent snowfalls constitute the main restrictions of the image-based method. |
author2 |
Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) GREAT ICE |
format |
Article in Journal/Newspaper |
author |
Rabatel, Antoine Dedieu, Jean-Pierre Vincent, Christian |
author_facet |
Rabatel, Antoine Dedieu, Jean-Pierre Vincent, Christian |
author_sort |
Rabatel, Antoine |
title |
Using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three French glaciers, 1994-2002 |
title_short |
Using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three French glaciers, 1994-2002 |
title_full |
Using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three French glaciers, 1994-2002 |
title_fullStr |
Using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three French glaciers, 1994-2002 |
title_full_unstemmed |
Using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three French glaciers, 1994-2002 |
title_sort |
using remote-sensing data to determine equilibrium-line altitude and mass-balance time series: validation on three french glaciers, 1994-2002 |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://insu.hal.science/insu-00374887 https://insu.hal.science/insu-00374887/document https://insu.hal.science/insu-00374887/file/using-remote-sensing-data-to-determine-equilibrium-line-altitude-and-mass-balance-time-series-validation-on-three-french-glaciers-19942002.pdf https://doi.org/10.3189/172756505781829106 |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) |
geographic |
Ela |
geographic_facet |
Ela |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://insu.hal.science/insu-00374887 Journal of Glaciology, 2005, 51 (175), pp.539 à 546. ⟨10.3189/172756505781829106⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3189/172756505781829106 insu-00374887 https://insu.hal.science/insu-00374887 https://insu.hal.science/insu-00374887/document https://insu.hal.science/insu-00374887/file/using-remote-sensing-data-to-determine-equilibrium-line-altitude-and-mass-balance-time-series-validation-on-three-french-glaciers-19942002.pdf doi:10.3189/172756505781829106 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3189/172756505781829106 |
container_title |
Journal of Glaciology |
container_volume |
51 |
container_issue |
175 |
container_start_page |
539 |
op_container_end_page |
546 |
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1798848744987295744 |