Summer Arctic ice concentrations and characteristics from SAR and SSM/I data
The extent and concentration of the Summer minima provide indirect information about the long term ability of the perennial portion of the ice pack to survive the Arctic atmosphere and ocean system. Both active and passive microwave data were used with some success for monitoring the ice cover durin...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19940007290 2023-05-15T14:50:57+02:00 Summer Arctic ice concentrations and characteristics from SAR and SSM/I data Comiso, Joey C. Kwok, Ron Unclassified, Unlimited, Publicly available Mar 1, 1993 http://ntrs.nasa.gov/search.jsp?R=19940007290 unknown http://ntrs.nasa.gov/search.jsp?R=19940007290 Accession ID: 94N11762 Copyright CASI 43 ESA, Proceedings of First ERS-1 Symposium on Space at the Service of Our Environment, Volume 1; p 367-372 1993 ftnasantrs 2012-02-15T20:49:05Z The extent and concentration of the Summer minima provide indirect information about the long term ability of the perennial portion of the ice pack to survive the Arctic atmosphere and ocean system. Both active and passive microwave data were used with some success for monitoring the ice cover during the Summer, but they both suffer from similar problems caused by the presence of meltponding, surface wetness, flooding, and freeze/thaw cycles associated with periodic changes in surface air temperatures. A comparative analysis of ice conditions in the Arctic region using coregistered ERS-1 SAR (Synthetic Aperture Radar) and SSM/I (Special Sensor Microwave/Imager) data was made. The analysis benefits from complementary information from the two systems, the good spatial resolution of SAR data, and the good time resolution of and global coverage by SSM/I data. The results show that in many areas ice concentrations derived from SAR data are significantly different (usually higher) than those derived from passive microwave data. Additional insights about surface conditions can be inferred depending on the nature of the discrepancies. Other/Unknown Material Arctic NASA Technical Reports Server (NTRS) Arctic |
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NASA Technical Reports Server (NTRS) |
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43 |
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43 Comiso, Joey C. Kwok, Ron Summer Arctic ice concentrations and characteristics from SAR and SSM/I data |
topic_facet |
43 |
description |
The extent and concentration of the Summer minima provide indirect information about the long term ability of the perennial portion of the ice pack to survive the Arctic atmosphere and ocean system. Both active and passive microwave data were used with some success for monitoring the ice cover during the Summer, but they both suffer from similar problems caused by the presence of meltponding, surface wetness, flooding, and freeze/thaw cycles associated with periodic changes in surface air temperatures. A comparative analysis of ice conditions in the Arctic region using coregistered ERS-1 SAR (Synthetic Aperture Radar) and SSM/I (Special Sensor Microwave/Imager) data was made. The analysis benefits from complementary information from the two systems, the good spatial resolution of SAR data, and the good time resolution of and global coverage by SSM/I data. The results show that in many areas ice concentrations derived from SAR data are significantly different (usually higher) than those derived from passive microwave data. Additional insights about surface conditions can be inferred depending on the nature of the discrepancies. |
format |
Other/Unknown Material |
author |
Comiso, Joey C. Kwok, Ron |
author_facet |
Comiso, Joey C. Kwok, Ron |
author_sort |
Comiso, Joey C. |
title |
Summer Arctic ice concentrations and characteristics from SAR and SSM/I data |
title_short |
Summer Arctic ice concentrations and characteristics from SAR and SSM/I data |
title_full |
Summer Arctic ice concentrations and characteristics from SAR and SSM/I data |
title_fullStr |
Summer Arctic ice concentrations and characteristics from SAR and SSM/I data |
title_full_unstemmed |
Summer Arctic ice concentrations and characteristics from SAR and SSM/I data |
title_sort |
summer arctic ice concentrations and characteristics from sar and ssm/i data |
publishDate |
1993 |
url |
http://ntrs.nasa.gov/search.jsp?R=19940007290 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
CASI |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19940007290 Accession ID: 94N11762 |
op_rights |
Copyright |
_version_ |
1766322000451600384 |