Characterization of Asian dust and Siberian smoke with multi-wavelength Raman lidar over Tokyo, Japan in spring 2003

Details Characterization of Asian dust and Siberian smoke with multi-wavelength Raman lidar over Tokyo, Japan in spring 2003 Characterization of Asian dust and Siberian smoke with multi-wavelength Raman lidar over Tokyo, Japan in spring 2003

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3123103m&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 23, CiteID L23103

Physics

29

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801), Atmospheric Composition And Structure: Troposphere-Constituent Transport And Chemistry, Atmospheric Composition And Structure: Instruments And Techniques

Scientific paper

In the spring of 2003, we observed lofted Asian dust and Siberian forest-fire smoke plumes in the free troposphere over Tokyo, Japan with a dual-wavelength Raman lidar. These data show clear signatures of the optical characteristics depending on the aerosol type. The Asian-dust layer shows that the particle depolarization ratio (PDR) at 532 nm is ~20%, and the extinction-to-backscatter ratio (lidar ratio) at 355 nm is ~49 sr, which is close to ~43 sr measured at 532 nm. On the contrary, the smoke layers show that the PDR is as small as 5-8% or less, and the lidar ratio at 355 nm is ~40 sr, which is considerably lower than ~65 sr which was measured at 532 nm. We also applied an inversion algorithm for the smoke case. The effective radius was ~0.22 μm and the single-scattering albedo at 532 nm was ~0.95.

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