An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice
Advanced Microwave Scanning Radiometer (AMSR-E) snow-depth data for Antarctic sea ice are compared with ship-based visual observations of snow depth, ice type and ridged-ice fraction, and with satellite C-band and Ku-band radar backscatter observations for two ship cruises into the Weddell Sea (ISPO...
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International Glaciological Society
2011
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ftoceanrep:oai:oceanrep.geomar.de:26212 2023-05-15T13:29:39+02:00 An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice Kern, Stefan Ozsoy-Cicek, Burcu Willmes, Sascha Nicolaus, Marcel Haas, Christian Ackley, Stephen 2011 https://oceanrep.geomar.de/id/eprint/26212/ unknown International Glaciological Society Kern, S., Ozsoy-Cicek, B., Willmes, S., Nicolaus, M., Haas, C. and Ackley, S. (2011) An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice. Annals of Glaciology, 52 (57). pp. 279-290. info:eu-repo/semantics/closedAccess Article PeerReviewed 2011 ftoceanrep 2023-04-07T15:15:30Z Advanced Microwave Scanning Radiometer (AMSR-E) snow-depth data for Antarctic sea ice are compared with ship-based visual observations of snow depth, ice type and ridged-ice fraction, and with satellite C-band and Ku-band radar backscatter observations for two ship cruises into the Weddell Sea (ISPOL 2004–05, WWOS 2006) and one cruise into the Bellingshausen Sea (SIMBA 2007) during late winter/spring. Most (>75%) AMSR-E and ship-based snow-depth observations agree within 0.2 m during WWOS and SIMBA. Remaining observations indicate substantial underestimations of snow depths by AMSR-E data. These underestimations tend to increase with the ridged-ice fraction for WWOS and SIMBA. In areas with large snow depths, a combination of relatively stable low C-band radar backscatter and variable Ku-band radar backscatter is associated with undeformed first-year ice and may indicate snow metamorphism at this time of year during SIMBA. In areas with small snow depths, a combination of relatively stable low Ku-band radar backscatter, high C-band radar backscatter and low C-band radar backscatter standard deviations is associated with rough first-year ice during SIMBA. This information can help to better understand causes of the observed AMSR-E snow-depth bias during late-winter/spring conditions with decreasing average snow depth and to delineate areas where this bias occurs. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Bellingshausen Sea Sea ice Weddell Sea OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Weddell Sea Bellingshausen Sea Weddell |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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description |
Advanced Microwave Scanning Radiometer (AMSR-E) snow-depth data for Antarctic sea ice are compared with ship-based visual observations of snow depth, ice type and ridged-ice fraction, and with satellite C-band and Ku-band radar backscatter observations for two ship cruises into the Weddell Sea (ISPOL 2004–05, WWOS 2006) and one cruise into the Bellingshausen Sea (SIMBA 2007) during late winter/spring. Most (>75%) AMSR-E and ship-based snow-depth observations agree within 0.2 m during WWOS and SIMBA. Remaining observations indicate substantial underestimations of snow depths by AMSR-E data. These underestimations tend to increase with the ridged-ice fraction for WWOS and SIMBA. In areas with large snow depths, a combination of relatively stable low C-band radar backscatter and variable Ku-band radar backscatter is associated with undeformed first-year ice and may indicate snow metamorphism at this time of year during SIMBA. In areas with small snow depths, a combination of relatively stable low Ku-band radar backscatter, high C-band radar backscatter and low C-band radar backscatter standard deviations is associated with rough first-year ice during SIMBA. This information can help to better understand causes of the observed AMSR-E snow-depth bias during late-winter/spring conditions with decreasing average snow depth and to delineate areas where this bias occurs. |
format |
Article in Journal/Newspaper |
author |
Kern, Stefan Ozsoy-Cicek, Burcu Willmes, Sascha Nicolaus, Marcel Haas, Christian Ackley, Stephen |
spellingShingle |
Kern, Stefan Ozsoy-Cicek, Burcu Willmes, Sascha Nicolaus, Marcel Haas, Christian Ackley, Stephen An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice |
author_facet |
Kern, Stefan Ozsoy-Cicek, Burcu Willmes, Sascha Nicolaus, Marcel Haas, Christian Ackley, Stephen |
author_sort |
Kern, Stefan |
title |
An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice |
title_short |
An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice |
title_full |
An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice |
title_fullStr |
An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice |
title_full_unstemmed |
An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice |
title_sort |
intercomparison between amsr-e snow-depth and satellite c- and ku-band radar backscatter data for antarctic sea ice |
publisher |
International Glaciological Society |
publishDate |
2011 |
url |
https://oceanrep.geomar.de/id/eprint/26212/ |
geographic |
Antarctic Weddell Sea Bellingshausen Sea Weddell |
geographic_facet |
Antarctic Weddell Sea Bellingshausen Sea Weddell |
genre |
Annals of Glaciology Antarc* Antarctic Bellingshausen Sea Sea ice Weddell Sea |
genre_facet |
Annals of Glaciology Antarc* Antarctic Bellingshausen Sea Sea ice Weddell Sea |
op_relation |
Kern, S., Ozsoy-Cicek, B., Willmes, S., Nicolaus, M., Haas, C. and Ackley, S. (2011) An intercomparison between AMSR-E snow-depth and satellite C- and Ku-band radar backscatter data for Antarctic sea ice. Annals of Glaciology, 52 (57). pp. 279-290. |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1766001764794892288 |