Snow melting bias in microwave mapping of Antarctic snow accumulation
International audience Satellite records of microwave surface emission have been used to interpolate in-situ observations of Antarctic surface mass balance (SMB) and build continental-scale maps of accumulation. Using a carefully screened subset of SMB measurements in the 90°–180° E sector, we show...
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Online Access: | https://insu.hal.science/insu-00379666 https://insu.hal.science/insu-00379666/document https://insu.hal.science/insu-00379666/file/tc-2-109-2008.pdf https://doi.org/10.5194/tc-2-109-2008 |
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ftunigrenoble:oai:HAL:insu-00379666v1 2024-05-12T07:56:12+00:00 Snow melting bias in microwave mapping of Antarctic snow accumulation Magand, Olivier Picard, Ghislain Brucker, Ludovic Fily, Michel Genthon, Christophe 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) 2008 https://insu.hal.science/insu-00379666 https://insu.hal.science/insu-00379666/document https://insu.hal.science/insu-00379666/file/tc-2-109-2008.pdf https://doi.org/10.5194/tc-2-109-2008 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-2-109-2008 insu-00379666 https://insu.hal.science/insu-00379666 https://insu.hal.science/insu-00379666/document https://insu.hal.science/insu-00379666/file/tc-2-109-2008.pdf doi:10.5194/tc-2-109-2008 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://insu.hal.science/insu-00379666 The Cryosphere, 2008, 259 (2), pp.109 à 115. ⟨10.5194/tc-2-109-2008⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2008 ftunigrenoble https://doi.org/10.5194/tc-2-109-2008 2024-04-18T03:20:18Z International audience Satellite records of microwave surface emission have been used to interpolate in-situ observations of Antarctic surface mass balance (SMB) and build continental-scale maps of accumulation. Using a carefully screened subset of SMB measurements in the 90°–180° E sector, we show a reasonable agreement with microwave-based accumulation map in the dry-snow regions, but large discrepancies in the coastal regions where melt occurs during summer. Using an emission microwave model, we explain the failure of microwave sensors to retrieve SMB by the presence of layers created by melt/refreeze cycles. We conclude that regions potentially affected by melting should be masked-out in microwave-based interpolation schemes. Article in Journal/Newspaper Antarc* Antarctic The Cryosphere Université Grenoble Alpes: HAL Antarctic The Cryosphere 2 2 109 115 |
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 Magand, Olivier Picard, Ghislain Brucker, Ludovic Fily, Michel Genthon, Christophe Snow melting bias in microwave mapping of Antarctic snow accumulation |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Satellite records of microwave surface emission have been used to interpolate in-situ observations of Antarctic surface mass balance (SMB) and build continental-scale maps of accumulation. Using a carefully screened subset of SMB measurements in the 90°–180° E sector, we show a reasonable agreement with microwave-based accumulation map in the dry-snow regions, but large discrepancies in the coastal regions where melt occurs during summer. Using an emission microwave model, we explain the failure of microwave sensors to retrieve SMB by the presence of layers created by melt/refreeze cycles. We conclude that regions potentially affected by melting should be masked-out in microwave-based interpolation schemes. |
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) |
format |
Article in Journal/Newspaper |
author |
Magand, Olivier Picard, Ghislain Brucker, Ludovic Fily, Michel Genthon, Christophe |
author_facet |
Magand, Olivier Picard, Ghislain Brucker, Ludovic Fily, Michel Genthon, Christophe |
author_sort |
Magand, Olivier |
title |
Snow melting bias in microwave mapping of Antarctic snow accumulation |
title_short |
Snow melting bias in microwave mapping of Antarctic snow accumulation |
title_full |
Snow melting bias in microwave mapping of Antarctic snow accumulation |
title_fullStr |
Snow melting bias in microwave mapping of Antarctic snow accumulation |
title_full_unstemmed |
Snow melting bias in microwave mapping of Antarctic snow accumulation |
title_sort |
snow melting bias in microwave mapping of antarctic snow accumulation |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://insu.hal.science/insu-00379666 https://insu.hal.science/insu-00379666/document https://insu.hal.science/insu-00379666/file/tc-2-109-2008.pdf https://doi.org/10.5194/tc-2-109-2008 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic The Cryosphere |
genre_facet |
Antarc* Antarctic The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://insu.hal.science/insu-00379666 The Cryosphere, 2008, 259 (2), pp.109 à 115. ⟨10.5194/tc-2-109-2008⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-2-109-2008 insu-00379666 https://insu.hal.science/insu-00379666 https://insu.hal.science/insu-00379666/document https://insu.hal.science/insu-00379666/file/tc-2-109-2008.pdf doi:10.5194/tc-2-109-2008 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-2-109-2008 |
container_title |
The Cryosphere |
container_volume |
2 |
container_issue |
2 |
container_start_page |
109 |
op_container_end_page |
115 |
_version_ |
1798836167050788864 |