Statistical relationship between ISCCP cloud type and relative humidity observed by radiosonde

Material type: 文書・図像類

Author: INOUE, Toshiroほか

Publisher: Chiba University. Center for Environmental Remote Sensing

Publication date: 2001-02-21

Material Format: Digital

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NDC: 512.75

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Note (General)：: type:text[ABSTRACT] The statistical relationship between ISCCP (International Satellite Cloud Climatology Project) cloud type and relative humidity pr...

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Material Type: 文書・図像類
Title: Statistical relationship between ISCCP cloud type and relative humidity observed by radiosonde
Author/Editor: INOUE, Toshiro
KAMAHORI, Hirotaka
Author Heading: INOUE, Toshiro
KAMAHORI, Hirotaka
Publication, Distribution, etc.: Chiba University. Center for Environmental Remote Sensing
Publication Date: 2001-02-21
Publication Date (W3CDTF): 2001-02-21
Periodical title: Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集
No. or year of volume/issue: 7
Volume: 7
Pages: 69-73
Text Language Code: eng
NDC: 512.75
451
Target Audience: 一般
Note (General): type:text
[ABSTRACT] The statistical relationship between ISCCP (International Satellite Cloud Climatology Project) cloud type and relative humidity profile observed by radiosonde was studied during the period from July, 1992 to June, 1994. The ISCCP-DX data of GMS were used to compute the cloud amount for each cloud type over the 1.5 degree grid area centered at the radiosonde station. To obtain the reliable cloud type classification, the data at 00 UTC when the visible data were available were used. The radiosonde observations when the 1.5 degree grid area is covered by single cloud type were used to compare the relative humidity profile. Four cloud types of low-level, middle-level, cirrus- and cumulonimbus-type cloud were selected for the comparison. As was expected, the relative humidity was highest at all levels when the cumulonimbus-type cloud existed and was lowest at all levels when no cloud existed. The relative humidity was higher than that of a cloud-free case at middle-level (low-level) when middle-cloud (low-cloud) existed. Cirrus clouds are difficult to identify objectively from single infrared measurement. In ISCCP, however, cirrus cloud can be identified with the use of visible and infrared measurements. When cirrus cloud existed, the high level relative humidity showed local maximum and was higher than that when low- and middle-cloud existed.
Format (IMT): application/pdf
Source: https://opac.ll.chiba-u.jp/da/curator/900022380/C-22_14.pdf
https://opac.ll.chiba-u.jp/da/curator/900022380/C-22_14.pdf
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 千葉大学 : 千葉大学学術成果リポジトリ