In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments
The 2001-ice season in the Sea of Okhotsk was characterized by extraordinarily developed ice extent. During the period February 17 to 21, we conducted in-situ observations in the southern ice area with the icebreaker 'Soya'. In this paper, we show the observational results, concerning the...
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Institute of Low Temperature Science, Hokkaido University/Graduate School of Environmental Earth Science, Hokkaido University/Weathernews Inc./Institute of Low Temperature Science, Hokkaido University
2002
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ftnipr:oai:nipr.repo.nii.ac.jp:00002952 2023-05-15T16:39:12+02:00 In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments Takenobu Toyota Baba, Kenji Hashiya,Eisuke Ohshima, Kay I. 2002-11 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2952 http://id.nii.ac.jp/1291/00002952/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2952&item_no=1&attribute_id=18&file_no=1 en eng Institute of Low Temperature Science, Hokkaido University/Graduate School of Environmental Earth Science, Hokkaido University/Weathernews Inc./Institute of Low Temperature Science, Hokkaido University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2952 http://id.nii.ac.jp/1291/00002952/ AA1129795X Polar meteorology and glaciology, 16, 116-132(2002-11) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2952&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 2002 ftnipr 2022-11-26T19:42:17Z The 2001-ice season in the Sea of Okhotsk was characterized by extraordinarily developed ice extent. During the period February 17 to 21, we conducted in-situ observations in the southern ice area with the icebreaker 'Soya'. In this paper, we show the observational results, concerning the core sampling of about 1.3 m-thick ice, snow sampling, surface temperature, and solar radiation under clear sky conditions. It is shown that (1) the sampled ice core is composed entirely of granular ice, (2) the 30 cm-thick snow pack overlying sea ice is composed mainly of depth hoar and significant vertical gradients of δ^<18>O and temperature are found within the snow, probably associated with the depth hoar formation, (3) surface temperatures as low as about -30°C are detected on snow-covered sea ice floes at nighttime under almost clear and light breeze conditions, (4) from the estimation of the turbidity coefficient, the atmosphere over the ice-covered area is considered to be significantly clean. Furthermore, the NOAA/AVHRR satellite data are used to estimate the surface temperature distribution in the southern Sea of Okhotsk. It is shown that these data are useful for discriminating thick ice floes. Report ice core Polar meteorology and glaciology Sea ice National Institute of Polar Research Repository, Japan Okhotsk |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
The 2001-ice season in the Sea of Okhotsk was characterized by extraordinarily developed ice extent. During the period February 17 to 21, we conducted in-situ observations in the southern ice area with the icebreaker 'Soya'. In this paper, we show the observational results, concerning the core sampling of about 1.3 m-thick ice, snow sampling, surface temperature, and solar radiation under clear sky conditions. It is shown that (1) the sampled ice core is composed entirely of granular ice, (2) the 30 cm-thick snow pack overlying sea ice is composed mainly of depth hoar and significant vertical gradients of δ^<18>O and temperature are found within the snow, probably associated with the depth hoar formation, (3) surface temperatures as low as about -30°C are detected on snow-covered sea ice floes at nighttime under almost clear and light breeze conditions, (4) from the estimation of the turbidity coefficient, the atmosphere over the ice-covered area is considered to be significantly clean. Furthermore, the NOAA/AVHRR satellite data are used to estimate the surface temperature distribution in the southern Sea of Okhotsk. It is shown that these data are useful for discriminating thick ice floes. |
format |
Report |
author |
Takenobu Toyota Baba, Kenji Hashiya,Eisuke Ohshima, Kay I. |
spellingShingle |
Takenobu Toyota Baba, Kenji Hashiya,Eisuke Ohshima, Kay I. In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments |
author_facet |
Takenobu Toyota Baba, Kenji Hashiya,Eisuke Ohshima, Kay I. |
author_sort |
Takenobu Toyota |
title |
In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments |
title_short |
In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments |
title_full |
In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments |
title_fullStr |
In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments |
title_full_unstemmed |
In-situ ice and meteorological observations in the southern Sea of Okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments |
title_sort |
in-situ ice and meteorological observations in the southern sea of okhotsk in 2001 winter: ice structure, snow on ice, surface temperature, and optical environments |
publisher |
Institute of Low Temperature Science, Hokkaido University/Graduate School of Environmental Earth Science, Hokkaido University/Weathernews Inc./Institute of Low Temperature Science, Hokkaido University |
publishDate |
2002 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2952 http://id.nii.ac.jp/1291/00002952/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2952&item_no=1&attribute_id=18&file_no=1 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
ice core Polar meteorology and glaciology Sea ice |
genre_facet |
ice core Polar meteorology and glaciology Sea ice |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2952 http://id.nii.ac.jp/1291/00002952/ AA1129795X Polar meteorology and glaciology, 16, 116-132(2002-11) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2952&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766029534181720064 |