Microwave signatures of first-year and multiyear sea ice

A combination of remote sensing from an aircraft and simultaneous surface measurements have confirmed the feasibility of identifying old and new sea ice according to its emission of thermal radiation at wavelengths between 0.3 and 3 cm. Emissivity of first-year thick ice with a surface temperature o...

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Bibliographic Details
Main Authors: Nordberg, P., Schmugge, T. J., Wilheit, T. T., Campbell, W. J., Gloersen, P.
Format: Other/Unknown Material
Language:unknown
Published: 1972
Subjects:
GEOPHYSICS
Sea ice
Online Access:http://hdl.handle.net/2060/19720022699
id ftnasantrs:oai:casi.ntrs.nasa.gov:19720022699
record_format openpolar
spelling ftnasantrs:oai:casi.ntrs.nasa.gov:19720022699 2023-05-15T18:17:28+02:00 Microwave signatures of first-year and multiyear sea ice Nordberg, P. Schmugge, T. J. Wilheit, T. T. Campbell, W. J. Gloersen, P. Unclassified, Unlimited, Publicly available Aug 1, 1972 application/pdf http://hdl.handle.net/2060/19720022699 unknown Document ID: 19720022699 Accession ID: 72N30349 http://hdl.handle.net/2060/19720022699 No Copyright CASI GEOPHYSICS NASA-TM-X-66006 X-652-72-312 1972 ftnasantrs 2019-07-21T11:37:41Z A combination of remote sensing from an aircraft and simultaneous surface measurements have confirmed the feasibility of identifying old and new sea ice according to its emission of thermal radiation at wavelengths between 0.3 and 3 cm. Emissivity of first-year thick ice with a surface temperature of about 260 K is 0.95 or greater for wavelengths between 0.81 and 11 cm; the emissivity of multiyear ice is 0.8 at 0.81 cm and 0.95 at 11 cm, increasing monotonically in this wave length interval. The ease with which multiyear ice can be distinguished from first-year ice using a passive microwave radiometer is demonstrated by comparing mosaics prepared both from photographs and images of 1.55 cm radiation. Other/Unknown Material Sea ice NASA Technical Reports Server (NTRS)
institution Open Polar
collection NASA Technical Reports Server (NTRS)
op_collection_id ftnasantrs
language unknown
topic GEOPHYSICS
spellingShingle GEOPHYSICS
Nordberg, P.
Schmugge, T. J.
Wilheit, T. T.
Campbell, W. J.
Gloersen, P.
Microwave signatures of first-year and multiyear sea ice
topic_facet GEOPHYSICS
description A combination of remote sensing from an aircraft and simultaneous surface measurements have confirmed the feasibility of identifying old and new sea ice according to its emission of thermal radiation at wavelengths between 0.3 and 3 cm. Emissivity of first-year thick ice with a surface temperature of about 260 K is 0.95 or greater for wavelengths between 0.81 and 11 cm; the emissivity of multiyear ice is 0.8 at 0.81 cm and 0.95 at 11 cm, increasing monotonically in this wave length interval. The ease with which multiyear ice can be distinguished from first-year ice using a passive microwave radiometer is demonstrated by comparing mosaics prepared both from photographs and images of 1.55 cm radiation.
format Other/Unknown Material
author Nordberg, P.
Schmugge, T. J.
Wilheit, T. T.
Campbell, W. J.
Gloersen, P.
author_facet Nordberg, P.
Schmugge, T. J.
Wilheit, T. T.
Campbell, W. J.
Gloersen, P.
author_sort Nordberg, P.
title Microwave signatures of first-year and multiyear sea ice
title_short Microwave signatures of first-year and multiyear sea ice
title_full Microwave signatures of first-year and multiyear sea ice
title_fullStr Microwave signatures of first-year and multiyear sea ice
title_full_unstemmed Microwave signatures of first-year and multiyear sea ice
title_sort microwave signatures of first-year and multiyear sea ice
publishDate 1972
url http://hdl.handle.net/2060/19720022699
op_coverage Unclassified, Unlimited, Publicly available
genre Sea ice
genre_facet Sea ice
op_source CASI
op_relation Document ID: 19720022699
Accession ID: 72N30349
http://hdl.handle.net/2060/19720022699
op_rights No Copyright
_version_ 1766191701408350208

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