Estimating the Thickness of Sea Ice Snow Cover in the Weddell Sea from Passive Microwave Brightness Temperatures
Passive microwave satellite observations have frequently been used to observe changes in sea ice cover and concentration. Comiso et al. showed that there may also be a direct relationship between the thickness of snow cover (h(sub s)) on ice and microwave emissivity at 90 GHz. Because the in situ ex...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19970015273 2023-05-15T18:17:55+02:00 Estimating the Thickness of Sea Ice Snow Cover in the Weddell Sea from Passive Microwave Brightness Temperatures Arrigo, K. R. Comiso, J. C. vanDijken, G. L. Unclassified, Unlimited, Publicly available Dec. 1996 application/pdf http://hdl.handle.net/2060/19970015273 unknown Document ID: 19970015273 Accession ID: 97N18231 http://hdl.handle.net/2060/19970015273 No Copyright CASI Earth Resources and Remote Sensing NASA-TM-104640 NAS 1.15:104640 Rept-97B00003 1996 ftnasantrs 2019-07-21T08:09:03Z Passive microwave satellite observations have frequently been used to observe changes in sea ice cover and concentration. Comiso et al. showed that there may also be a direct relationship between the thickness of snow cover (h(sub s)) on ice and microwave emissivity at 90 GHz. Because the in situ experiment of experiment of Comiso et al. was limited to a single station, the relationship is re-examined in this paper in a more general context and using more extensive in situ microwave observations and measurements of h from the Weddell Sea 1986 and 1989 winter cruises. Good relationships were found to exist between h(sub s) sand the emissivity at 90 GHz - 10 GHz and the emissivity at 90 GHz - 18.7 GHz when the standard deviation of h(sub s) was less than 50% of the mean and when h(sub s) was less than 0.25 m. The reliance of these relationships on h(sub s) is most likely caused by the limited penetration through the snow of radiation at 90 GHz. When the algorithm was applied to the Special Sensor Microwave/Imager (SSM/I) satellite data from the Weddell Sea, the resulting mean h(sub s) agreed within 5% of the mean calculated from greater than 1400 in situ observations. Other/Unknown Material Sea ice Weddell Sea NASA Technical Reports Server (NTRS) Weddell Sea Weddell |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Earth Resources and Remote Sensing |
spellingShingle |
Earth Resources and Remote Sensing Arrigo, K. R. Comiso, J. C. vanDijken, G. L. Estimating the Thickness of Sea Ice Snow Cover in the Weddell Sea from Passive Microwave Brightness Temperatures |
topic_facet |
Earth Resources and Remote Sensing |
description |
Passive microwave satellite observations have frequently been used to observe changes in sea ice cover and concentration. Comiso et al. showed that there may also be a direct relationship between the thickness of snow cover (h(sub s)) on ice and microwave emissivity at 90 GHz. Because the in situ experiment of experiment of Comiso et al. was limited to a single station, the relationship is re-examined in this paper in a more general context and using more extensive in situ microwave observations and measurements of h from the Weddell Sea 1986 and 1989 winter cruises. Good relationships were found to exist between h(sub s) sand the emissivity at 90 GHz - 10 GHz and the emissivity at 90 GHz - 18.7 GHz when the standard deviation of h(sub s) was less than 50% of the mean and when h(sub s) was less than 0.25 m. The reliance of these relationships on h(sub s) is most likely caused by the limited penetration through the snow of radiation at 90 GHz. When the algorithm was applied to the Special Sensor Microwave/Imager (SSM/I) satellite data from the Weddell Sea, the resulting mean h(sub s) agreed within 5% of the mean calculated from greater than 1400 in situ observations. |
format |
Other/Unknown Material |
author |
Arrigo, K. R. Comiso, J. C. vanDijken, G. L. |
author_facet |
Arrigo, K. R. Comiso, J. C. vanDijken, G. L. |
author_sort |
Arrigo, K. R. |
title |
Estimating the Thickness of Sea Ice Snow Cover in the Weddell Sea from Passive Microwave Brightness Temperatures |
title_short |
Estimating the Thickness of Sea Ice Snow Cover in the Weddell Sea from Passive Microwave Brightness Temperatures |
title_full |
Estimating the Thickness of Sea Ice Snow Cover in the Weddell Sea from Passive Microwave Brightness Temperatures |
title_fullStr |
Estimating the Thickness of Sea Ice Snow Cover in the Weddell Sea from Passive Microwave Brightness Temperatures |
title_full_unstemmed |
Estimating the Thickness of Sea Ice Snow Cover in the Weddell Sea from Passive Microwave Brightness Temperatures |
title_sort |
estimating the thickness of sea ice snow cover in the weddell sea from passive microwave brightness temperatures |
publishDate |
1996 |
url |
http://hdl.handle.net/2060/19970015273 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Weddell Sea Weddell |
geographic_facet |
Weddell Sea Weddell |
genre |
Sea ice Weddell Sea |
genre_facet |
Sea ice Weddell Sea |
op_source |
CASI |
op_relation |
Document ID: 19970015273 Accession ID: 97N18231 http://hdl.handle.net/2060/19970015273 |
op_rights |
No Copyright |
_version_ |
1766193397186428928 |