Observation of the Atmospheric Surface Layer on Bare Ice in the Circumference of the Yamato Mountains, Antarctica
The measurements of profiles of wind speed and air temperature in the atmospheric surface layer above bare ice surface in the circumference of the Yamato Mountains were carried out under neutral and unstable conditions in December, 1973. The results are summarized as follows: 1) The value of aerodyn...
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National Institute of Polar Research
1978
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ftdoajarticles:oai:doaj.org/article:06b424144e0f44e7aee972a34c59bcd3 2023-05-15T13:44:56+02:00 Observation of the Atmospheric Surface Layer on Bare Ice in the Circumference of the Yamato Mountains, Antarctica Shun'ichi KOBAYASHI 1978-03-01T00:00:00Z https://doi.org/10.15094/00007979 https://doaj.org/article/06b424144e0f44e7aee972a34c59bcd3 EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00007979 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007979 0085-7289 2432-079X https://doaj.org/article/06b424144e0f44e7aee972a34c59bcd3 Antarctic Record, Iss 61, Pp 11-22 (1978) Geography (General) G1-922 article 1978 ftdoajarticles https://doi.org/10.15094/00007979 2022-12-31T03:38:29Z The measurements of profiles of wind speed and air temperature in the atmospheric surface layer above bare ice surface in the circumference of the Yamato Mountains were carried out under neutral and unstable conditions in December, 1973. The results are summarized as follows: 1) The value of aerodynamic roughness parameter (Z_0) was constantly 0.085 cm independent on wind speed, and this value corresponded to the depth of spoon-cut features (2-3 cm) on the bare ice surface. 2) The relation between the friction velocity (U_*) and the wind speed at 1 m height (U_1) is expressed by U_*=0.057 U_1. 3) Atmosphere showed an unstable condition (negative Richardson number) with the decrease of wind speed, as the bare ice surface was heated by radiation. 4) Eddy diffusivity obtained on the bare ice surface in neutral condition was larger than that of sea ice around Syowa Station. Article in Journal/Newspaper Antarc* Antarctica Sea ice Directory of Open Access Journals: DOAJ Articles Syowa Station Yamato ENVELOPE(35.583,35.583,-71.417,-71.417) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Shun'ichi KOBAYASHI Observation of the Atmospheric Surface Layer on Bare Ice in the Circumference of the Yamato Mountains, Antarctica |
topic_facet |
Geography (General) G1-922 |
description |
The measurements of profiles of wind speed and air temperature in the atmospheric surface layer above bare ice surface in the circumference of the Yamato Mountains were carried out under neutral and unstable conditions in December, 1973. The results are summarized as follows: 1) The value of aerodynamic roughness parameter (Z_0) was constantly 0.085 cm independent on wind speed, and this value corresponded to the depth of spoon-cut features (2-3 cm) on the bare ice surface. 2) The relation between the friction velocity (U_*) and the wind speed at 1 m height (U_1) is expressed by U_*=0.057 U_1. 3) Atmosphere showed an unstable condition (negative Richardson number) with the decrease of wind speed, as the bare ice surface was heated by radiation. 4) Eddy diffusivity obtained on the bare ice surface in neutral condition was larger than that of sea ice around Syowa Station. |
format |
Article in Journal/Newspaper |
author |
Shun'ichi KOBAYASHI |
author_facet |
Shun'ichi KOBAYASHI |
author_sort |
Shun'ichi KOBAYASHI |
title |
Observation of the Atmospheric Surface Layer on Bare Ice in the Circumference of the Yamato Mountains, Antarctica |
title_short |
Observation of the Atmospheric Surface Layer on Bare Ice in the Circumference of the Yamato Mountains, Antarctica |
title_full |
Observation of the Atmospheric Surface Layer on Bare Ice in the Circumference of the Yamato Mountains, Antarctica |
title_fullStr |
Observation of the Atmospheric Surface Layer on Bare Ice in the Circumference of the Yamato Mountains, Antarctica |
title_full_unstemmed |
Observation of the Atmospheric Surface Layer on Bare Ice in the Circumference of the Yamato Mountains, Antarctica |
title_sort |
observation of the atmospheric surface layer on bare ice in the circumference of the yamato mountains, antarctica |
publisher |
National Institute of Polar Research |
publishDate |
1978 |
url |
https://doi.org/10.15094/00007979 https://doaj.org/article/06b424144e0f44e7aee972a34c59bcd3 |
long_lat |
ENVELOPE(35.583,35.583,-71.417,-71.417) |
geographic |
Syowa Station Yamato |
geographic_facet |
Syowa Station Yamato |
genre |
Antarc* Antarctica Sea ice |
genre_facet |
Antarc* Antarctica Sea ice |
op_source |
Antarctic Record, Iss 61, Pp 11-22 (1978) |
op_relation |
https://doi.org/10.15094/00007979 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007979 0085-7289 2432-079X https://doaj.org/article/06b424144e0f44e7aee972a34c59bcd3 |
op_doi |
https://doi.org/10.15094/00007979 |
_version_ |
1766208680440627200 |