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...
| Main Authors: | , , , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
1972
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| Subjects: | |
| Online Access: | http://hdl.handle.net/2060/19720022699 |
| _version_ | 1821705697825390592 |
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| 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. |
| collection | NASA Technical Reports Server (NTRS) |
| 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 |
| genre | Sea ice |
| genre_facet | Sea ice |
| id | ftnasantrs:oai:casi.ntrs.nasa.gov:19720022699 |
| institution | Open Polar |
| language | unknown |
| op_collection_id | ftnasantrs |
| op_coverage | Unclassified, Unlimited, Publicly available |
| op_relation | Document ID: 19720022699 Accession ID: 72N30349 http://hdl.handle.net/2060/19720022699 |
| op_rights | No Copyright |
| op_source | CASI |
| publishDate | 1972 |
| record_format | openpolar |
| spelling | ftnasantrs:oai:casi.ntrs.nasa.gov:19720022699 2025-01-17T00:43:43+00:00 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) |
| spellingShingle | GEOPHYSICS Nordberg, P. Schmugge, T. J. Wilheit, T. T. Campbell, W. J. Gloersen, P. Microwave signatures of first-year and multiyear sea ice |
| title | 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_short | Microwave signatures of first-year and multiyear sea ice |
| title_sort | microwave signatures of first-year and multiyear sea ice |
| topic | GEOPHYSICS |
| topic_facet | GEOPHYSICS |
| url | http://hdl.handle.net/2060/19720022699 |