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ceresIntlSympo-19-P041
pdf
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26
基本情報
データ種別:学術成果リポジトリ
タイトル
Characterization of atmospheric phenomena with SKYNET aerosol properties at Fukue-jima and Amami-Oshima islands
作成者
KITAKOGA, Shiho
OTA, Ayano
KUJI, Makoto
作成者の別表記
北古賀, 識帆
大田, 彩乃
久慈, 誠
内容
[ABSTRACT]Recently, it is apprehended that aerosols emitted from factories, vehicles and slash-and-burn farming influence environment in East Asia. Atmospheric phenomena such as haze, mist and yellow sand, accompanied with aerosols, have been observed by eye at meteorological observatories and reported operationally for a long time because they usually cause severe visual hindrance. Many studies pointed out that yellow sand phenomena contained not only dust but also air pollution materials such as sulphate particles from megacities in East Asia. Accordingly, it is important to characterize the atmospheric phenomena quantitatively with mechanical or optical observation. In this study, characteristics of the aerosol with the atmospheric phenomena were investigated with sky radiometer observation at Fukue-jima island, Nagasaki (32.75°N, 128.68°E) and Amami-Oshima island, Kagoshima (28.44°N, 129.70°E) from 2003 to 2004.Statistical analyses were carried out with the retrieved aerosol optical properties in 9:00, 12:00, 15:00 (Japan Standard Time; JST=UTC+9) when meteorological data were available. Further, clear sky data with cloud amount less than unity were selected to suppress cloud contamination.As a result of the statistical analyses, it turned out that the average ± standard deviation for aerosol optical depth τ, ?ngstr?m exponent α, and single scattering albedo ω were 0.56 ± 0.19 (0.48), 1.26 ± 0.09 (0.69), and 0.97 ± 0.02 (0.99) for four haze events (for a yellow sand event), respectively. Comparing the results, it is suggested that haze consisted of smaller particles from the ?ngstr?m exponent α, while light-absorptivity is stronger with the haze events than the yellow sand one, even with fewer events around western islands in Japan from 2003 to 2004. Additional results of the synergetic data analyses with Optical Particle Counter (OPC) and LIDAR, and so on, will be carried out and discussed in terms of the aerosol characteristics in detail.
ハンドルURL
https://opac.ll.chiba-u.jp/da/curator/107462/
フルテキストへのリンク
https://opac.ll.chiba-u.jp/da/curator/107462/ceresIntlSympo-19-P041.pdf
公開者
Chiba University. Center for Environmental Remote Sensing
公開者の別表記
千葉大学環境リモートセンシング研究センター
NII資源タイプ
会議発表用資料
掲載誌名
Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集
巻
19
開始ページ
41
終了ページ
42
刊行年月
2013-07-04
著者版フラグ
publisher
カテゴリ
環境リモートセンシング研究センター「CEReSシンポジウム資料集」
その他の情報を表示
コンテンツの種類
会議発表用資料 Presentation
DCMI資源タイプ
text
ファイル形式 [IMT]
application/pdf
言語 [ISO639-2]
eng
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