Some Features of the Turbulent Transfer on the Bare Ice Field Near the Yamato Mountains, East Antarctica
Measurements were made of profiles of wind speed and air temperature on the bare ice surface on the lee of the Yamato Mountains from 1 to 7 December 1973. The vertical profile of air temperature was found unstable in the daytime when the wind speed decreased, as the bare ice surface was heated by so...
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| Format: | Report |
| Language: | English |
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The Institute of Low Temperature Science, Hokkaido University
1979
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| Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=955 http://id.nii.ac.jp/1291/00000955/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=955&item_no=1&attribute_id=18&file_no=1 |
| Summary: | Measurements were made of profiles of wind speed and air temperature on the bare ice surface on the lee of the Yamato Mountains from 1 to 7 December 1973. The vertical profile of air temperature was found unstable in the daytime when the wind speed decreased, as the bare ice surface was heated by solar radiation. Consequently, a mean eddy heat flux transported from the surface was 50ly/day. As for an energy budget, estimated latent heat flux was about 150ly/day which indicates the evaporation of 0.25cm/day in the summer. The observation of wind turbulence by the use of sonic anemometer showed a strong turbulence generated by nunataks. This strong turbulence contributes to the surface ablation of bare ice in the summer. |
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