Continuous ground-based observation of aerosol optical properties in Tsukuba, Japan

Material type: 文書・図像類

Author: UCHIYAMA, Akihiroほか

Publisher: Chiba University. Center for Environmental Remote Sensing

Publication date: 2013-07-04

Material Format: Digital

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Note (General)：: type:text[ABSTRACT]In order to investigate optical properties of aerosol, scattering coefficients and absorption coefficients have been continuously m...

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Material Type: 文書・図像類
Title: Continuous ground-based observation of aerosol optical properties in Tsukuba, Japan
Author/Editor: UCHIYAMA, Akihiro
YAMAZAKI, Akihiro
KUDO, Rei
UESAWA, Daisaku
Author Heading: UCHIYAMA, Akihiro
YAMAZAKI, Akihiro
KUDO, Rei
UESAWA, Daisaku
Publication, Distribution, etc.: Chiba University. Center for Environmental Remote Sensing
Publication Date: 2013-07-04
Publication Date (W3CDTF): 2013-07-04
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: 19
Volume: 19
Pages: 40-40
Text Language Code: eng
Target Audience: 一般
Note (General): type:text
[ABSTRACT]In order to investigate optical properties of aerosol, scattering coefficients and absorption coefficients have been continuously measured since January, 2002 using integrating nephelometer (TSI model 3563) and absorption photometer (Radiance Research PSAP, PSAP3λ) on dry condition at Tsukuba, Japan. Using these data, the recent 10 years trend of aerosol properties and climatology was investigated. The results show that the aerosol characteristics have seasonal variation and the tendencies to decrease or increase. These tendencies were significant in the confidence level 95%. The extinction, scattering, and absorption coefficients (1/m) had trends to decrease in the period from 2002 to 2012; -6.05x10-6, -4.94x10-6(1/year) at wavelength of 550nm and -1.11x10- 6(1/year) at wavelength 526nm, respectively. The Single scattering albedo has the trends to increase in the same period; 4.27x10-3(1/year) at wavelength of 550nm. Asymmetry factors have the trends to decrease in the same period; -2.22 x10-3(1/year) at wavelength 550nm. The extinction ?ngstr?m exponent has the tendency to increase, and the effective radius has the tendency to decrease. These tendencies are consistent with the tendency of asymmetry factor. The values of absorption ?ngstr?m exponent were about 1.0 and have seasonal variation. The absorption ?ngstr?m exponent had the trend to increase in the period from 2006 to 2012; 1.15x10-2(1/year). The change of absorption ?ngstr?m exponent suggests the change in the composition of light absorbing aerosol.
Format (IMT): application/pdf
Source: https://opac.ll.chiba-u.jp/da/curator/107461/ceresIntlSympo-19-P040.pdf
https://opac.ll.chiba-u.jp/da/curator/107461/ceresIntlSympo-19-P040.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