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http://dx.doi.org/10.7780/kjrs.2013.29.4.7

Retrieval of Vertical Single-scattering albedo of Asian dust using Multi-wavelength Raman Lidar System  

Noh, Youngmin (School of Environmental Science & Engineering, Gwangju Institute of Science and Technology)
Lee, Chulkyu (Meteorological Application Research Laboratory, National Institute of Meteorological Research)
Kim, Kwanchul (School of Environmental Science & Engineering, Gwangju Institute of Science and Technology)
Shin, Sungkyun (School of Environmental Science & Engineering, Gwangju Institute of Science and Technology)
Shin, Dongho (School of Environmental Science & Engineering, Gwangju Institute of Science and Technology)
Choi, Sungchul (SOLETOP Inc.)
Publication Information
Korean Journal of Remote Sensing / v.29, no.4, 2013 , pp. 415-421 More about this Journal
Abstract
A new approach to retrieve the single-scattering albedo (SSA) of Asian dust plume, mixed with pollution particles, using multi-wavelength Raman lidar system was suggested in this study. Asian dust plume was separated as dust and non-dust particle (i.e. spherical particle) by the particle depolarization ratio at 532 nm. The vertical profiles of optical properties (the particle extinction coefficient at 355 and 532 nm and backscatter coefficient at 355, 532 and 1064 nm) for non-dust particle were used as input parameter for the inversion algorithm. The inversion algorithm provides the vertical distribution of microphysical properties of non-dust particle only so that the estimation of the SSA for the Asian dust in mixing state was suggested in this study. In order to estimate the SSA for the mixed Asian dust, we combined the SSA of non-dust particles retrieved by the inversion algorithms with assumed the SSA of 0.96 at 532 nm for dust. The retrieved SSA of Asian dust plume by lidar data was compared with the Aerosol Robotics Network (AERONET) retrieved values and showed good agreement.
Keywords
Lidar; Depolarization ratio; Asian dust; Single-scattering albedo;
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