Snow melting bias in microwave mapping of Antarctic snow accumulation
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...
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ftcopernicus:oai:publications.copernicus.org:tc7027 2023-05-15T13:36:36+02:00 Snow melting bias in microwave mapping of Antarctic snow accumulation Magand, O. Picard, G. Brucker, L. Fily, M. Genthon, C. 2018-09-27 application/pdf https://doi.org/10.5194/tc-2-109-2008 https://tc.copernicus.org/articles/2/109/2008/ eng eng doi:10.5194/tc-2-109-2008 https://tc.copernicus.org/articles/2/109/2008/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-2-109-2008 2020-07-20T16:26:50Z 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. Text Antarc* Antarctic Copernicus Publications: E-Journals Antarctic The Cryosphere 2 2 109 115 |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
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. |
format |
Text |
author |
Magand, O. Picard, G. Brucker, L. Fily, M. Genthon, C. |
spellingShingle |
Magand, O. Picard, G. Brucker, L. Fily, M. Genthon, C. Snow melting bias in microwave mapping of Antarctic snow accumulation |
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 |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-2-109-2008 https://tc.copernicus.org/articles/2/109/2008/ |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-2-109-2008 https://tc.copernicus.org/articles/2/109/2008/ |
op_doi |
https://doi.org/10.5194/tc-2-109-2008 |
container_title |
The Cryosphere |
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2 |
container_issue |
2 |
container_start_page |
109 |
op_container_end_page |
115 |
_version_ |
1766081461468790784 |