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  1. 139 大気海洋研究所
  2. 10 気候システム研究系
  3. 1391010 学術雑誌
  1. 0 資料タイプ別
  2. 10 学術雑誌論文
  3. 014 自然科学

Aerosol optical properties over east Asia determined from ground-based sky radiation measurements

http://hdl.handle.net/2261/51887
http://hdl.handle.net/2261/51887
a50b60a3-c032-4eb2-b585-682e1f7a611d
名前 / ファイル ライセンス アクション
Nakajima2004JGRA_H24P94.pdf Nakajima2004JGRA_H24P94.pdf (1.0 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-01-10
タイトル
タイトル Aerosol optical properties over east Asia determined from ground-based sky radiation measurements
言語
言語 eng
キーワード
主題Scheme Other
主題 aerosol optical property
キーワード
主題Scheme Other
主題 sky radiation measurements
キーワード
主題Scheme Other
主題 Asian dust
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Kim, Do-Hyeong

× Kim, Do-Hyeong

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Kim, Do-Hyeong

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Sohn, Byung-Ju

× Sohn, Byung-Ju

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Sohn, Byung-Ju

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Nakajima, Teruyuki

× Nakajima, Teruyuki

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Nakajima, Teruyuki

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Takamura, Tamio

× Takamura, Tamio

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Takamura, Tamio

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Takemura, Toshihiko

× Takemura, Toshihiko

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Takemura, Toshihiko

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Choi, Byoung-Cheol

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Choi, Byoung-Cheol

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Yoon, Soon-Chang

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Yoon, Soon-Chang

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著者所属
著者所属 School of Earth and Environmental Sciences, Seoul National University
著者所属
著者所属 Center for Climate System Research, University of Tokyo
著者所属
著者所属 Center for Environmental Remote Sensing, Chiba University
著者所属
著者所属 Research Institute for Applied Mechanics, Kyushu University
著者所属
著者所属 Meteorological Research Institute, Korea Meteorological Administration
抄録
内容記述タイプ Abstract
内容記述 Aerosol optical properties (aerosol optical thickness, Ångström exponent, size distribution, and single scattering albedo) over east Asia were examined using long-term measurements of sky radiation at Mandalgovi, Dunhuang, Yinchuan, and Sri-Samrong sites of the Skyradiometer Network (SKYNET). Also included were sky radiation measurements at Anmyon, Gosan in Korea, and Amami-Oshima in Japan during April for examining optical properties of Asian dust. Results show that the seasonal average of aerosol optical thickness (AOT) generally exhibits a maximum in spring and a minimum in autumn over east Asia. At Sri-Samrong and Yinchuan, relatively distinct seasonal cycles are noted, in comparison to the arid desert regions of Dunhuang and Mandalgovi. In general, aerosol size distributions are characterized by a bimodal pattern, with a fine mode around 0.2 μm and a coarse mode around 2-5 μm. Similar to AOT and α, volume spectra are also much dependent on geographical location and season. Dunhuang mostly shows coarse mode particles in all seasons, while Mandalgovi and Sri-Samrong show large seasonal variations in the total volume of fine mode particles. The single scattering albedos of dust particles over east Asia are around 0.9 at 0.5 μm, which are larger than the previously known values of 0.63-0.89 but similar to those found in the Aerosol Robotic Network (AERONET) analysis. It is noted that the optical properties of Asian dust around Korea and Japan are quite similar to those found in dust source regions such as Dunhuang and Mandalgovi. However, the single scattering albedo appears to be smaller than those observed in Dunhuang and Mandalgovi. Furthermore, single scattering albedo tends to become smaller during the dust outbreak period. Considering that aerosols in Korean and Japanese areas are much influenced by anthropogenic aerosols emitted in China particularly under the westerly conditions, the mixing processes between different aerosol species may be the cause of the different optical properties of Asian dust.
書誌情報 Journal of geophysical research. D

巻 109, 号 2, p. D02209, 発行日 2004-01-29
ISSN
収録物識別子タイプ ISSN
収録物識別子 01480227
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA10819765
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1029/2003JD003387
権利
権利情報 Copyright 2004 by the American Geophysical Union.
日本十進分類法
主題Scheme NDC
主題 451
出版者
出版者 American Geophysical Union
異版である
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://doi.org/10.1029/2003JD003387
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