Estimating the snow depth, the snow–ice interface temperature, and the effective temperature of Arctic sea ice using Advanced Microwave Scanning Radiometer 2 and ice mass balance buoy data
Mapping sea ice concentration (SIC) and understanding sea ice properties and variability is important, especially today with the recent Arctic sea ice decline. Moreover, accurate estimation of the sea ice effective temperature (Teff) at 50 GHz is needed for atmospheric sounding applications over sea...
Published in: | The Cryosphere |
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2019
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00002596 2023-05-15T14:53:04+02:00 Estimating the snow depth, the snow–ice interface temperature, and the effective temperature of Arctic sea ice using Advanced Microwave Scanning Radiometer 2 and ice mass balance buoy data Kilic, Lise Tonboe, Rasmus Tage Prigent, Catherine Heygster, Georg 2019-04 electronic https://doi.org/10.5194/tc-13-1283-2019 https://noa.gwlb.de/receive/cop_mods_00002596 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002554/tc-13-1283-2019.pdf https://tc.copernicus.org/articles/13/1283/2019/tc-13-1283-2019.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-13-1283-2019 https://noa.gwlb.de/receive/cop_mods_00002596 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002554/tc-13-1283-2019.pdf https://tc.copernicus.org/articles/13/1283/2019/tc-13-1283-2019.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2019 ftnonlinearchiv https://doi.org/10.5194/tc-13-1283-2019 2022-02-08T23:00:59Z Mapping sea ice concentration (SIC) and understanding sea ice properties and variability is important, especially today with the recent Arctic sea ice decline. Moreover, accurate estimation of the sea ice effective temperature (Teff) at 50 GHz is needed for atmospheric sounding applications over sea ice and for noise reduction in SIC estimates. At low microwave frequencies, the sensitivity to the atmosphere is low, and it is possible to derive sea ice parameters due to the penetration of microwaves in the snow and ice layers. In this study, we propose simple algorithms to derive the snow depth, the snow–ice interface temperature (TSnow−Ice) and the Teff of Arctic sea ice from microwave brightness temperatures (TBs). This is achieved using the Round Robin Data Package of the ESA sea ice CCI project, which contains TBs from the Advanced Microwave Scanning Radiometer 2 (AMSR2) collocated with measurements from ice mass balance buoys (IMBs) and the NASA Operation Ice Bridge (OIB) airborne campaigns over the Arctic sea ice. The snow depth over sea ice is estimated with an error of 5.1 cm, using a multilinear regression with the TBs at 6, 18, and 36 V. The TSnow−Ice is retrieved using a linear regression as a function of the snow depth and the TBs at 10 or 6 V. The root mean square errors (RMSEs) obtained are 2.87 and 2.90 K respectively, with 10 and 6 V TBs. The Teff at microwave frequencies between 6 and 89 GHz is expressed as a function of TSnow−Ice using data from a thermodynamical model combined with the Microwave Emission Model of Layered Snowpacks. Teff is estimated from the TSnow−Ice with a RMSE of less than 1 K. Article in Journal/Newspaper Arctic Sea ice The Cryosphere Niedersächsisches Online-Archiv NOA Arctic The Cryosphere 13 4 1283 1296 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Kilic, Lise Tonboe, Rasmus Tage Prigent, Catherine Heygster, Georg Estimating the snow depth, the snow–ice interface temperature, and the effective temperature of Arctic sea ice using Advanced Microwave Scanning Radiometer 2 and ice mass balance buoy data |
topic_facet |
article Verlagsveröffentlichung |
description |
Mapping sea ice concentration (SIC) and understanding sea ice properties and variability is important, especially today with the recent Arctic sea ice decline. Moreover, accurate estimation of the sea ice effective temperature (Teff) at 50 GHz is needed for atmospheric sounding applications over sea ice and for noise reduction in SIC estimates. At low microwave frequencies, the sensitivity to the atmosphere is low, and it is possible to derive sea ice parameters due to the penetration of microwaves in the snow and ice layers. In this study, we propose simple algorithms to derive the snow depth, the snow–ice interface temperature (TSnow−Ice) and the Teff of Arctic sea ice from microwave brightness temperatures (TBs). This is achieved using the Round Robin Data Package of the ESA sea ice CCI project, which contains TBs from the Advanced Microwave Scanning Radiometer 2 (AMSR2) collocated with measurements from ice mass balance buoys (IMBs) and the NASA Operation Ice Bridge (OIB) airborne campaigns over the Arctic sea ice. The snow depth over sea ice is estimated with an error of 5.1 cm, using a multilinear regression with the TBs at 6, 18, and 36 V. The TSnow−Ice is retrieved using a linear regression as a function of the snow depth and the TBs at 10 or 6 V. The root mean square errors (RMSEs) obtained are 2.87 and 2.90 K respectively, with 10 and 6 V TBs. The Teff at microwave frequencies between 6 and 89 GHz is expressed as a function of TSnow−Ice using data from a thermodynamical model combined with the Microwave Emission Model of Layered Snowpacks. Teff is estimated from the TSnow−Ice with a RMSE of less than 1 K. |
format |
Article in Journal/Newspaper |
author |
Kilic, Lise Tonboe, Rasmus Tage Prigent, Catherine Heygster, Georg |
author_facet |
Kilic, Lise Tonboe, Rasmus Tage Prigent, Catherine Heygster, Georg |
author_sort |
Kilic, Lise |
title |
Estimating the snow depth, the snow–ice interface temperature, and the effective temperature of Arctic sea ice using Advanced Microwave Scanning Radiometer 2 and ice mass balance buoy data |
title_short |
Estimating the snow depth, the snow–ice interface temperature, and the effective temperature of Arctic sea ice using Advanced Microwave Scanning Radiometer 2 and ice mass balance buoy data |
title_full |
Estimating the snow depth, the snow–ice interface temperature, and the effective temperature of Arctic sea ice using Advanced Microwave Scanning Radiometer 2 and ice mass balance buoy data |
title_fullStr |
Estimating the snow depth, the snow–ice interface temperature, and the effective temperature of Arctic sea ice using Advanced Microwave Scanning Radiometer 2 and ice mass balance buoy data |
title_full_unstemmed |
Estimating the snow depth, the snow–ice interface temperature, and the effective temperature of Arctic sea ice using Advanced Microwave Scanning Radiometer 2 and ice mass balance buoy data |
title_sort |
estimating the snow depth, the snow–ice interface temperature, and the effective temperature of arctic sea ice using advanced microwave scanning radiometer 2 and ice mass balance buoy data |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-13-1283-2019 https://noa.gwlb.de/receive/cop_mods_00002596 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002554/tc-13-1283-2019.pdf https://tc.copernicus.org/articles/13/1283/2019/tc-13-1283-2019.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice The Cryosphere |
genre_facet |
Arctic Sea ice The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-13-1283-2019 https://noa.gwlb.de/receive/cop_mods_00002596 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00002554/tc-13-1283-2019.pdf https://tc.copernicus.org/articles/13/1283/2019/tc-13-1283-2019.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-13-1283-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
4 |
container_start_page |
1283 |
op_container_end_page |
1296 |
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1766324484171628544 |