Scattering properties of polluted dust in 1.6-μm wavelength

doi:10.1088/1674-1056/23/10/104203

Abstract Three typical polluted dust particles (i.e., single coated dust, two-sphere/spheroid system, and coated dust with aggregate) including internal and semi-external mixtures are modeled, and their scattering properties at 1.6-μm wavelength are calculated by using the generalized multi-sphere Mie-solution (GMM) method. We investigate the influences of particle size, morphology, and chemical composition on the scattering parameters of polluted dust particles. The analysis results demonstrate that the single scattering albedo of coated dust is much smaller than that of pure dust, especially for the spheroidal black carbon (BC) coated dust. When a dust particle semi-mixes with another aerosol particle to form a two-sphere/spheroid system, its scattering properties are much more sensitive to the size and species of monomers than the monomer shape. If an aggregated BC attaches to the coated dust, the scattering properties of whole particle mainly depend on the host particle (coated dust).

Keywords: scattering properties polluted dust generalized multi-sphere Mie solution method

Received: 06 October 2013
Revised: 18 February 2014
Accepted manuscript online:

PACS:	42.25.Fx	(Diffraction and scattering)
	42.68.-w	(Atmospheric and ocean optics)
	92.60.Mt	(Particles and aerosols)

Fund: Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 41130528) and the National Basic Research Program of China (Grant No. 2010CB950801).

Corresponding Authors: Chen Liang-Fu
E-mail: chenlf@radi.ac.cn

About author: 42.25.Fx; 42.68.-w; 92.60.Mt

Cite this article:

Fan Meng (范萌), Chen Liang-Fu (陈良富), Li Shen-Shen (李莘莘), Tao Jin-Hua (陶金花), Su Lin (苏林), Zou Ming-Min (邹铭敏) Scattering properties of polluted dust in 1.6-μm wavelength 2014 Chin. Phys. B 23 104203


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