Surface-based passive microwave studies of multiyear sea ice
Results are presented on surface-based multifrequency passive microwave observations of multiyear (MY) sea ice in the eastern Arctic Basin, the Beaufort Sea, the Canadian archipelago, and the northern Greenland Sea. The analyses of these data show that the magnitude of the spectral gradient of emiss...
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1992
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ftnasantrs:oai:casi.ntrs.nasa.gov:19920045846 2023-05-15T14:29:10+02:00 Surface-based passive microwave studies of multiyear sea ice Grenfell, T. C. Unclassified, Unlimited, Publicly available Mar 15, 1992 http://ntrs.nasa.gov/search.jsp?R=19920045846 unknown http://ntrs.nasa.gov/search.jsp?R=19920045846 Accession ID: 92A28470 Copyright Other Sources 48 Journal of Geophysical Research; 97; C3 ,; 3485-350 1992 ftnasantrs 2012-02-15T19:30:34Z Results are presented on surface-based multifrequency passive microwave observations of multiyear (MY) sea ice in the eastern Arctic Basin, the Beaufort Sea, the Canadian archipelago, and the northern Greenland Sea. The analyses of these data show that the magnitude of the spectral gradient of emissivity is directly related to the existence and the thickness of a decomposed surface ice layer with very high porosity. Spectra for melt ponds with a frozen surface layer closely resembled those of lake ice and showed a positive spectral gradient. The variance among emissivity spectra for MY ice was caused primarily by the distributions of melt ponds and by the presence of significant amounts of scattering inhomogeneities in the snow and the upper 20-30-cm layer of the ice. Other/Unknown Material Arctic Basin Arctic Beaufort Sea Canadian Archipelago Greenland Greenland Sea Sea ice NASA Technical Reports Server (NTRS) Arctic Greenland |
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Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
48 |
spellingShingle |
48 Grenfell, T. C. Surface-based passive microwave studies of multiyear sea ice |
topic_facet |
48 |
description |
Results are presented on surface-based multifrequency passive microwave observations of multiyear (MY) sea ice in the eastern Arctic Basin, the Beaufort Sea, the Canadian archipelago, and the northern Greenland Sea. The analyses of these data show that the magnitude of the spectral gradient of emissivity is directly related to the existence and the thickness of a decomposed surface ice layer with very high porosity. Spectra for melt ponds with a frozen surface layer closely resembled those of lake ice and showed a positive spectral gradient. The variance among emissivity spectra for MY ice was caused primarily by the distributions of melt ponds and by the presence of significant amounts of scattering inhomogeneities in the snow and the upper 20-30-cm layer of the ice. |
format |
Other/Unknown Material |
author |
Grenfell, T. C. |
author_facet |
Grenfell, T. C. |
author_sort |
Grenfell, T. C. |
title |
Surface-based passive microwave studies of multiyear sea ice |
title_short |
Surface-based passive microwave studies of multiyear sea ice |
title_full |
Surface-based passive microwave studies of multiyear sea ice |
title_fullStr |
Surface-based passive microwave studies of multiyear sea ice |
title_full_unstemmed |
Surface-based passive microwave studies of multiyear sea ice |
title_sort |
surface-based passive microwave studies of multiyear sea ice |
publishDate |
1992 |
url |
http://ntrs.nasa.gov/search.jsp?R=19920045846 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Basin Arctic Beaufort Sea Canadian Archipelago Greenland Greenland Sea Sea ice |
genre_facet |
Arctic Basin Arctic Beaufort Sea Canadian Archipelago Greenland Greenland Sea Sea ice |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19920045846 Accession ID: 92A28470 |
op_rights |
Copyright |
_version_ |
1766303249665622016 |