Determination of sea ice concentration from AVHRR visible and near infrared imagery
Sea ice concentrations are determined from the visible and near infrared albedo of the AVHRR imagery. One method uses only one channel data to interpolate the ice concentration between 0 and 100% corresponding to the open water and the snow cover, respectively. This method yieds an uncertainty owing...
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National Institute of Polar Research
1986
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ftdoajarticles:oai:doaj.org/article:a7cef328d732446fb120adcbf0422a1d 2023-05-15T18:16:39+02:00 Determination of sea ice concentration from AVHRR visible and near infrared imagery Takashi Yamanouchi Kazuya Suzuki Masatoshi Matsushita Masanobu Shimizu Yasuhiko Naito 1986-07-01T00:00:00Z https://doi.org/10.15094/0000850 https://doaj.org/article/a7cef328d732446fb120adcbf0422a1d EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00008507 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/0000850 0085-7289 2432-079X https://doaj.org/article/a7cef328d732446fb120adcbf0422a1d Antarctic Record, Vol 30, Iss 2, Pp 89-102 (1986) Geography (General) G1-922 article 1986 ftdoajarticles https://doi.org/10.15094/0000850 https://doi.org/10.15094/00008507 2022-12-31T16:00:10Z Sea ice concentrations are determined from the visible and near infrared albedo of the AVHRR imagery. One method uses only one channel data to interpolate the ice concentration between 0 and 100% corresponding to the open water and the snow cover, respectively. This method yieds an uncertainty owing to the variation of albedo by the surface condition change. Another method uses two-channel data to derive not only the ice concentration but also the ice surface condition and can eliminate uncertainties involved in the first method. The ice surface condition is expressed by "snow coverage". Air photographs are compared with the satellite data. They are helpful to discuss the surface condition of sea ice. Time variations of the concentration and surface condition of summer sea ice are discussed. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
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Geography (General) G1-922 Takashi Yamanouchi Kazuya Suzuki Masatoshi Matsushita Masanobu Shimizu Yasuhiko Naito Determination of sea ice concentration from AVHRR visible and near infrared imagery |
topic_facet |
Geography (General) G1-922 |
description |
Sea ice concentrations are determined from the visible and near infrared albedo of the AVHRR imagery. One method uses only one channel data to interpolate the ice concentration between 0 and 100% corresponding to the open water and the snow cover, respectively. This method yieds an uncertainty owing to the variation of albedo by the surface condition change. Another method uses two-channel data to derive not only the ice concentration but also the ice surface condition and can eliminate uncertainties involved in the first method. The ice surface condition is expressed by "snow coverage". Air photographs are compared with the satellite data. They are helpful to discuss the surface condition of sea ice. Time variations of the concentration and surface condition of summer sea ice are discussed. |
format |
Article in Journal/Newspaper |
author |
Takashi Yamanouchi Kazuya Suzuki Masatoshi Matsushita Masanobu Shimizu Yasuhiko Naito |
author_facet |
Takashi Yamanouchi Kazuya Suzuki Masatoshi Matsushita Masanobu Shimizu Yasuhiko Naito |
author_sort |
Takashi Yamanouchi |
title |
Determination of sea ice concentration from AVHRR visible and near infrared imagery |
title_short |
Determination of sea ice concentration from AVHRR visible and near infrared imagery |
title_full |
Determination of sea ice concentration from AVHRR visible and near infrared imagery |
title_fullStr |
Determination of sea ice concentration from AVHRR visible and near infrared imagery |
title_full_unstemmed |
Determination of sea ice concentration from AVHRR visible and near infrared imagery |
title_sort |
determination of sea ice concentration from avhrr visible and near infrared imagery |
publisher |
National Institute of Polar Research |
publishDate |
1986 |
url |
https://doi.org/10.15094/0000850 https://doaj.org/article/a7cef328d732446fb120adcbf0422a1d |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Antarctic Record, Vol 30, Iss 2, Pp 89-102 (1986) |
op_relation |
https://doi.org/10.15094/00008507 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/0000850 0085-7289 2432-079X https://doaj.org/article/a7cef328d732446fb120adcbf0422a1d |
op_doi |
https://doi.org/10.15094/0000850 https://doi.org/10.15094/00008507 |
_version_ |
1766190421351858176 |