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Retrieval of the Single Scattering Albedo of Asian Dust Mixed with Pollutants Using Lidar Observations

Advances in Atmospheric Sciences 2014年第6期31卷 1417-1426页

作者： Sungkyun SHIN Young Min NOH Kwonho LEE Hanlim LEE Detlef MLLER Y.J.kim kwanchul kim Dongho SHIN School of Environmental Science and Engineering Gwangju Institute of Science and TechnologyKorea Department of Geoinformatics Engineering Kyungil UniversityKorea Department of Spatial Information Engineering Pukyong National UniversityKorea Science System and Applications Inc. NASA Langley Research CenterUSA University of Hertfordshire United Kingdom

The vertical distribution of single scattering albedos （SSAs） of Asian dust mixed with pollutants was derived using the multi-wavelength Raman lidar observation system at Gwangju （35.10°N,126.53°E）.Vertical profiles of both backscatter and extinction coefficients for dust and non-dust aerosols were extracted from a mixed Asian dust plume using the depolarization ratio from lidar *** profiles of backscatter and extinction coefficients of non-dust particles were input into an inversion algorithm to retrieve the SSAs of non-dust *** aerosol layers at different heights had different light-absorbing *** SSAs of non-dust particles at each height varied with aerosol type,which was either urban/industrial pollutants from China transported over long distances at high altitude,or regional/local pollutants from the Korean *** advantage of independent profiles of SSAs of non-dust particles,vertical profiles of SSAs of Asian dust mixed with pollutants were estimated for the first time,with a new approach suggested in this study using an empirical determination of the SSA of pure *** SSAs of the Asian dust-pollutants mixture within the planetary boundary layer （PBL） were in the range 0.88-0.91,while the values above the PBL were in the range 0.76-0.87,with a very low mean value of 0.76 ± *** total mixed dust plume SSAs in each aerosol layer were integrated over height for comparison with results from the Aerosol Robotics Network （AERONET） *** of SSA retrieved from lidar observations of 0.92 ± 0.01 were in good agreement with the results from AERONET measurements.

关键词： lidar Asian dust depolarization ratio microphysical properties single scattering albedo

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