Atmospheric Water Vapor Measurements at Mizuho Camp, East Antarctica in 1976-1977
The measurement of air humidity at the height of 1.5 meters above the snow surface was made at Mizuho Camp, East Antarctica, several times a day during the summer in 1976-1977, with the Karl Fisher method and the Assmann ventilated psychrometer method. The values of air humidity obtained by these tw...
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National Institute of Polar Research
1978
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ftdoajarticles:oai:doaj.org/article:25a4facdf38345d5bc7cc866e332099b 2023-05-15T13:46:16+02:00 Atmospheric Water Vapor Measurements at Mizuho Camp, East Antarctica in 1976-1977 Fumihiko NISHIO 1978-03-01T00:00:00Z https://doi.org/10.15094/00007978 https://doaj.org/article/25a4facdf38345d5bc7cc866e332099b EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00007978 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007978 0085-7289 2432-079X https://doaj.org/article/25a4facdf38345d5bc7cc866e332099b Antarctic Record, Iss 61, Pp 1-10 (1978) Geography (General) G1-922 article 1978 ftdoajarticles https://doi.org/10.15094/00007978 2022-12-31T12:16:14Z The measurement of air humidity at the height of 1.5 meters above the snow surface was made at Mizuho Camp, East Antarctica, several times a day during the summer in 1976-1977, with the Karl Fisher method and the Assmann ventilated psychrometer method. The values of air humidity obtained by these two methods agreed within approximately 5% error. Water vapor pressure was estimated from the air humidity at temperatures between -6.5 and -22.8℃. The water vapor pressure obtained showed daily variation similar to air temperature. During the measurement no supersaturation of water vapor with respect to ice was detected and no ice fog was observed. The relative air humidity was between 30 and 80%. It was lower under a condition of predominant katabatic winds than under an influence of cyclones. The daily mean amount of sublimation estimated from the water vapor pressure obtained was between 1.3 and 1.9 millimeters per day and it was nearly two or three times larger than the amount of sublimation obtained by a direct measurement, snow stake measurement. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Directory of Open Access Journals: DOAJ Articles East Antarctica Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) |
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 Fumihiko NISHIO Atmospheric Water Vapor Measurements at Mizuho Camp, East Antarctica in 1976-1977 |
topic_facet |
Geography (General) G1-922 |
description |
The measurement of air humidity at the height of 1.5 meters above the snow surface was made at Mizuho Camp, East Antarctica, several times a day during the summer in 1976-1977, with the Karl Fisher method and the Assmann ventilated psychrometer method. The values of air humidity obtained by these two methods agreed within approximately 5% error. Water vapor pressure was estimated from the air humidity at temperatures between -6.5 and -22.8℃. The water vapor pressure obtained showed daily variation similar to air temperature. During the measurement no supersaturation of water vapor with respect to ice was detected and no ice fog was observed. The relative air humidity was between 30 and 80%. It was lower under a condition of predominant katabatic winds than under an influence of cyclones. The daily mean amount of sublimation estimated from the water vapor pressure obtained was between 1.3 and 1.9 millimeters per day and it was nearly two or three times larger than the amount of sublimation obtained by a direct measurement, snow stake measurement. |
format |
Article in Journal/Newspaper |
author |
Fumihiko NISHIO |
author_facet |
Fumihiko NISHIO |
author_sort |
Fumihiko NISHIO |
title |
Atmospheric Water Vapor Measurements at Mizuho Camp, East Antarctica in 1976-1977 |
title_short |
Atmospheric Water Vapor Measurements at Mizuho Camp, East Antarctica in 1976-1977 |
title_full |
Atmospheric Water Vapor Measurements at Mizuho Camp, East Antarctica in 1976-1977 |
title_fullStr |
Atmospheric Water Vapor Measurements at Mizuho Camp, East Antarctica in 1976-1977 |
title_full_unstemmed |
Atmospheric Water Vapor Measurements at Mizuho Camp, East Antarctica in 1976-1977 |
title_sort |
atmospheric water vapor measurements at mizuho camp, east antarctica in 1976-1977 |
publisher |
National Institute of Polar Research |
publishDate |
1978 |
url |
https://doi.org/10.15094/00007978 https://doaj.org/article/25a4facdf38345d5bc7cc866e332099b |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) |
geographic |
East Antarctica Mizuho |
geographic_facet |
East Antarctica Mizuho |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
Antarctic Record, Iss 61, Pp 1-10 (1978) |
op_relation |
https://doi.org/10.15094/00007978 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007978 0085-7289 2432-079X https://doaj.org/article/25a4facdf38345d5bc7cc866e332099b |
op_doi |
https://doi.org/10.15094/00007978 |
_version_ |
1766239640224792576 |