Observation of Asian Dust Aerosols with Depolarization Lidar Using a Coherent White Light Continuum
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概要
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We performed a lidar observation of Asian dust aerosols for the first time using a white light lidar system. The lidar used in the observation utilized a coherent white light continuum generated in Kr gas as a light source and was used as a three-wavelength Mie-scattering lidar having a depolarization measurement capability at 450, 550, and 800 nm. Lidar depolarization ratios of 0.30–0.70 at 800 nm were measured. These data reveal a higher depolarization ratio than usual (normally almost zero) in the lower troposphere. Thus, the white light lidar can identify Asian dust particles that pose a threat to cross-border pollution in Japan.
- 2008-04-25
著者
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Galvez Maria
Physics Department De La Salle University
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Yamanaka Chihiro
Department Of Earth And Space Science Faculty Of Science Osaka University
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Somekawa Toshihiro
Department Of Earth And Space Science Osaka University
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Fujita Masayuki
Institiute for Laser Technology, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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Somekawa Toshihiro
Department of Earth and Space Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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Yamanaka Chihiro
Department of Earth and Space Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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