Measurements of sensible heat flux in katabatic wind at Mizuho Station, East Antarctica
A study was made of transfer of heat under strong surface inversion observed in 1980 at Mizuho Station, East Antarctica. Two sonic anemothermometers were used for direct measurements of eddy heat flux divergence or convergence between the levels of 3 and 30m above a snow field when skies were clear...
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The Institute of Low Temperature Science, Hokkaido University/The Institute of Low Temperature Science, Hokkaido University/Water Research Institute, Nagoya University/National Institute of Polar Research
1982
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ftnipr:oai:nipr.repo.nii.ac.jp:00001330 2023-05-15T13:47:59+02:00 Measurements of sensible heat flux in katabatic wind at Mizuho Station, East Antarctica Shun'ichi Kobayashi Nobuyoshi Ishikawa Tetsuo Ohata Sadao Kawaguchi 1982-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1330 http://id.nii.ac.jp/1291/00001330/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1330&item_no=1&attribute_id=18&file_no=1 en eng The Institute of Low Temperature Science, Hokkaido University/The Institute of Low Temperature Science, Hokkaido University/Water Research Institute, Nagoya University/National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1330 http://id.nii.ac.jp/1291/00001330/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 24, 57-64(1982-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1330&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1982 ftnipr 2022-11-12T19:42:11Z A study was made of transfer of heat under strong surface inversion observed in 1980 at Mizuho Station, East Antarctica. Two sonic anemothermometers were used for direct measurements of eddy heat flux divergence or convergence between the levels of 3 and 30m above a snow field when skies were clear and weak katabatic winds were blowing at a low level. We obtained the following results : When the surface cooling is predominant, the air layer between the snow surface and 30m has a structure in which at the surface a downward sensible heat flux compensates radiative cooling, and at 30m any sensible heat flux remains insensible until a gravity wave comes about from shear instability. The sum of values of radiative flux divergence between the snow surface and the top of a 30-m-high tower, and values of sensible heat flux divergence or convergence between the levels of 3 and 30m, shows a discrepancy in comparison with the actual cooling or warming rate. This discrepancy suggests that the amounts of advection and phase change are not neglegible concerning their effects on the rate of cooling or warming by radiative heat plus sensible heat which accompanies the developments of low katabatic flow. Report Antarc* Antarctica East Antarctica Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan East Antarctica Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Station ENVELOPE(44.317,44.317,-70.683,-70.683) |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
A study was made of transfer of heat under strong surface inversion observed in 1980 at Mizuho Station, East Antarctica. Two sonic anemothermometers were used for direct measurements of eddy heat flux divergence or convergence between the levels of 3 and 30m above a snow field when skies were clear and weak katabatic winds were blowing at a low level. We obtained the following results : When the surface cooling is predominant, the air layer between the snow surface and 30m has a structure in which at the surface a downward sensible heat flux compensates radiative cooling, and at 30m any sensible heat flux remains insensible until a gravity wave comes about from shear instability. The sum of values of radiative flux divergence between the snow surface and the top of a 30-m-high tower, and values of sensible heat flux divergence or convergence between the levels of 3 and 30m, shows a discrepancy in comparison with the actual cooling or warming rate. This discrepancy suggests that the amounts of advection and phase change are not neglegible concerning their effects on the rate of cooling or warming by radiative heat plus sensible heat which accompanies the developments of low katabatic flow. |
format |
Report |
author |
Shun'ichi Kobayashi Nobuyoshi Ishikawa Tetsuo Ohata Sadao Kawaguchi |
spellingShingle |
Shun'ichi Kobayashi Nobuyoshi Ishikawa Tetsuo Ohata Sadao Kawaguchi Measurements of sensible heat flux in katabatic wind at Mizuho Station, East Antarctica |
author_facet |
Shun'ichi Kobayashi Nobuyoshi Ishikawa Tetsuo Ohata Sadao Kawaguchi |
author_sort |
Shun'ichi Kobayashi |
title |
Measurements of sensible heat flux in katabatic wind at Mizuho Station, East Antarctica |
title_short |
Measurements of sensible heat flux in katabatic wind at Mizuho Station, East Antarctica |
title_full |
Measurements of sensible heat flux in katabatic wind at Mizuho Station, East Antarctica |
title_fullStr |
Measurements of sensible heat flux in katabatic wind at Mizuho Station, East Antarctica |
title_full_unstemmed |
Measurements of sensible heat flux in katabatic wind at Mizuho Station, East Antarctica |
title_sort |
measurements of sensible heat flux in katabatic wind at mizuho station, east antarctica |
publisher |
The Institute of Low Temperature Science, Hokkaido University/The Institute of Low Temperature Science, Hokkaido University/Water Research Institute, Nagoya University/National Institute of Polar Research |
publishDate |
1982 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1330 http://id.nii.ac.jp/1291/00001330/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1330&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(44.317,44.317,-70.683,-70.683) |
geographic |
East Antarctica Mizuho Mizuho Station |
geographic_facet |
East Antarctica Mizuho Mizuho Station |
genre |
Antarc* Antarctica East Antarctica Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Antarc* Antarctica East Antarctica Memoirs of National Institute of Polar Research Polar Research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1330 http://id.nii.ac.jp/1291/00001330/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 24, 57-64(1982-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1330&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766248261640781824 |