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 accumulation measurements in the 90°–180° E sector,...
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ftccsdartic:oai:HAL:hal-00331155v1 2023-05-15T13:51:27+02:00 Snow melting bias in microwave mapping of Antarctic snow accumulation Magand, O. Picard, G. Brucker, L. Fily, M. Genthon, C. Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-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 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) 2008-04-24 https://hal.archives-ouvertes.fr/hal-00331155 https://hal.archives-ouvertes.fr/hal-00331155/document https://hal.archives-ouvertes.fr/hal-00331155/file/tcd-2-255-2008.pdf en eng HAL CCSD Copernicus hal-00331155 https://hal.archives-ouvertes.fr/hal-00331155 https://hal.archives-ouvertes.fr/hal-00331155/document https://hal.archives-ouvertes.fr/hal-00331155/file/tcd-2-255-2008.pdf info:eu-repo/semantics/OpenAccess ISSN: 1994-0432 EISSN: 1994-0440 The Cryosphere Discussions https://hal.archives-ouvertes.fr/hal-00331155 The Cryosphere Discussions, Copernicus, 2008, 2 (2), pp.255-273 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2008 ftccsdartic 2021-10-24T20:40:42Z 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 accumulation 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 accumulation by the presence of layers created by melt/re-freeze 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 The Cryosphere Discussions Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Magand, O. Picard, G. Brucker, L. Fily, M. Genthon, C. Snow melting bias in microwave mapping of Antarctic snow accumulation |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
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 accumulation 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 accumulation by the presence of layers created by melt/re-freeze 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) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-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 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) |
format |
Article in Journal/Newspaper |
author |
Magand, O. Picard, G. Brucker, L. Fily, M. Genthon, C. |
author_facet |
Magand, O. Picard, G. Brucker, L. Fily, M. Genthon, C. |
author_sort |
Magand, O. |
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://hal.archives-ouvertes.fr/hal-00331155 https://hal.archives-ouvertes.fr/hal-00331155/document https://hal.archives-ouvertes.fr/hal-00331155/file/tcd-2-255-2008.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic The Cryosphere The Cryosphere Discussions |
genre_facet |
Antarc* Antarctic The Cryosphere The Cryosphere Discussions |
op_source |
ISSN: 1994-0432 EISSN: 1994-0440 The Cryosphere Discussions https://hal.archives-ouvertes.fr/hal-00331155 The Cryosphere Discussions, Copernicus, 2008, 2 (2), pp.255-273 |
op_relation |
hal-00331155 https://hal.archives-ouvertes.fr/hal-00331155 https://hal.archives-ouvertes.fr/hal-00331155/document https://hal.archives-ouvertes.fr/hal-00331155/file/tcd-2-255-2008.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766255323835793408 |