Measurements of Radiation Components at Mizuho Station, East Antarctica in 1979
P(論文) Radiation budget measurements were made at Mizuho Station under the program of POLEX-South. Global and reflected shortwave down-ward and upward longwave radiations were measured at the snow surface and at the top of a 30m tower. Direct solar radiation was also measured at the snow surface. The...
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ftnipr:oai:nipr.repo.nii.ac.jp:00001166 2024-09-09T19:04:41+00:00 Measurements of Radiation Components at Mizuho Station, East Antarctica in 1979 Yamanouchi, Takashi Wada, Makoto Mae, Shinji Kawaguchi, Sadao Tsukamura, Koji 1981-10 application/pdf https://nipr.repo.nii.ac.jp/record/1166/files/KJ00000011692.pdf eng eng Memoirs of National Institute of Polar Research. Special issue 19 27 39 AA00733561 https://nipr.repo.nii.ac.jp/record/1166/files/KJ00000011692.pdf 1981 ftnipr 2024-06-17T04:00:26Z P(論文) Radiation budget measurements were made at Mizuho Station under the program of POLEX-South. Global and reflected shortwave down-ward and upward longwave radiations were measured at the snow surface and at the top of a 30m tower. Direct solar radiation was also measured at the snow surface. The spectral measurements of shortwave radiation divided into four wavelength regions were made. Sensitivity constants of the pyranometers used for the measurement of global and reflected radiations showed large deviation from the cosine law response at a low solar elevation. Field calibration of the pyranometers was made extensively and some realistic equation to derive the global radiation under a broken sky from several calibration factors was proposed. As for the longwave radiation measurements, the pyrgeometer was equipped with a simple shading ring in order to eliminate the heating effect of the hemispherical dome due to solar radiation. Diurnal and seasonal variations of radiation components are shown and those of the net radiation are also given. Daily totals of the net radiation remain negative even in the summer for the clear sky, on account of high albedo of the snow surface and large upward longwave radiation compared with the downward. Downward longwave radiation was much more sensitive than the global radiation to the cloud amount and controlled the daily variations of the net balance. departmental bulletin paper Other/Unknown Material 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) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
P(論文) Radiation budget measurements were made at Mizuho Station under the program of POLEX-South. Global and reflected shortwave down-ward and upward longwave radiations were measured at the snow surface and at the top of a 30m tower. Direct solar radiation was also measured at the snow surface. The spectral measurements of shortwave radiation divided into four wavelength regions were made. Sensitivity constants of the pyranometers used for the measurement of global and reflected radiations showed large deviation from the cosine law response at a low solar elevation. Field calibration of the pyranometers was made extensively and some realistic equation to derive the global radiation under a broken sky from several calibration factors was proposed. As for the longwave radiation measurements, the pyrgeometer was equipped with a simple shading ring in order to eliminate the heating effect of the hemispherical dome due to solar radiation. Diurnal and seasonal variations of radiation components are shown and those of the net radiation are also given. Daily totals of the net radiation remain negative even in the summer for the clear sky, on account of high albedo of the snow surface and large upward longwave radiation compared with the downward. Downward longwave radiation was much more sensitive than the global radiation to the cloud amount and controlled the daily variations of the net balance. departmental bulletin paper |
author |
Yamanouchi, Takashi Wada, Makoto Mae, Shinji Kawaguchi, Sadao Tsukamura, Koji |
spellingShingle |
Yamanouchi, Takashi Wada, Makoto Mae, Shinji Kawaguchi, Sadao Tsukamura, Koji Measurements of Radiation Components at Mizuho Station, East Antarctica in 1979 |
author_facet |
Yamanouchi, Takashi Wada, Makoto Mae, Shinji Kawaguchi, Sadao Tsukamura, Koji |
author_sort |
Yamanouchi, Takashi |
title |
Measurements of Radiation Components at Mizuho Station, East Antarctica in 1979 |
title_short |
Measurements of Radiation Components at Mizuho Station, East Antarctica in 1979 |
title_full |
Measurements of Radiation Components at Mizuho Station, East Antarctica in 1979 |
title_fullStr |
Measurements of Radiation Components at Mizuho Station, East Antarctica in 1979 |
title_full_unstemmed |
Measurements of Radiation Components at Mizuho Station, East Antarctica in 1979 |
title_sort |
measurements of radiation components at mizuho station, east antarctica in 1979 |
publishDate |
1981 |
url |
https://nipr.repo.nii.ac.jp/record/1166/files/KJ00000011692.pdf |
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 |
Memoirs of National Institute of Polar Research. Special issue 19 27 39 AA00733561 https://nipr.repo.nii.ac.jp/record/1166/files/KJ00000011692.pdf |
_version_ |
1809818717568106496 |