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Effective infrared emissivity of clouds in Antarctica
https://nipr.repo.nii.ac.jp/records/1500
https://nipr.repo.nii.ac.jp/records/1500dcdaec94-fb9a-446c-8625-eb01fab6c724
名前 / ファイル | ライセンス | アクション |
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KJ00000012133.pdf (820.7 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1983-11-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Effective infrared emissivity of clouds in Antarctica | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Kawaguchi, Sadao
× Kawaguchi, Sadao |
|||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | This paper presents the infrared effective emissivity value of low and middle clouds deduced from 26 radiometersonde ascents carried out during 1967-1969,at Syowa Station, East Antarctica. The average cloud emissivities were 0.83 for the downward and 0.69 for the upward flux. The discrepancy was mainly due to the difference of the spectral distribution of both fluxes, as the downward flux over cloud top is very small in comparison with the equivalent black body radiation due to the scarcity of water vapor in the upper atmosphere in Antarctica. In this study, the effective emissivity was dominated more by the radiation field of the cloud circumference than by the radiative property of cloud itself. The emissivity increased with increasing cloud thickness till 800-1000m, and thereafter had a high constant value about 0.95 for the downward flux. The emissivity showed a decreasing tendency with increasing cloud base height. The IR radiative cooling of cloud is very notable; cooling rate of some 10 degrees centigrade per day was found in the upper part of cloud, and some zero cooling rate or heating was found in the lower part. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 29, p. 70-76, 発行日 1983-11 |