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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ftpubman:oai:pure.mpg.de:item_2084877 2023-08-20T03:59:46+02:00 An intercomparison between AMSR-E snow-depth and satellite C- and Ku-Band radar backscatter data for Antarctic sea ice Kern, S. Ozsoy-Cicek, B. Willmes, S. Nicolaus, M. Haas , C. Ackley, S. 2011 http://hdl.handle.net/11858/00-001M-0000-0024-9F21-6 eng eng http://hdl.handle.net/11858/00-001M-0000-0024-9F21-6 Annals of Glaciology info:eu-repo/semantics/article 2011 ftpubman 2023-08-01T22:52:18Z 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 0.2m 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 Max Planck Society: MPG.PuRe Antarctic Bellingshausen Sea Weddell Weddell Sea |
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Open Polar |
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Max Planck Society: MPG.PuRe |
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ftpubman |
language |
English |
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 0.2m 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, S. Ozsoy-Cicek, B. Willmes, S. Nicolaus, M. Haas , C. Ackley, S. |
spellingShingle |
Kern, S. Ozsoy-Cicek, B. Willmes, S. Nicolaus, M. Haas , C. Ackley, S. An intercomparison between AMSR-E snow-depth and satellite C- and Ku-Band radar backscatter data for Antarctic sea ice |
author_facet |
Kern, S. Ozsoy-Cicek, B. Willmes, S. Nicolaus, M. Haas , C. Ackley, S. |
author_sort |
Kern, S. |
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 |
publishDate |
2011 |
url |
http://hdl.handle.net/11858/00-001M-0000-0024-9F21-6 |
geographic |
Antarctic Bellingshausen Sea Weddell Weddell Sea |
geographic_facet |
Antarctic Bellingshausen Sea Weddell Weddell Sea |
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_source |
Annals of Glaciology |
op_relation |
http://hdl.handle.net/11858/00-001M-0000-0024-9F21-6 |
_version_ |
1774715627208966144 |