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15 October 2008Analyses of scattering characteristics of chosen anthropogenic aerosols
In the work, analyses of scattering profile of chosen anthropogenic aerosols for two wavelengths (λ1 = 1064 nm and
λ2 = 532 nm) were made. As an example of anthropogenic aerosol three different pyrotechnic mixtures (DM11, M2,
M16) were taken. Main parameters of smoke particles were firstly analyzed and well described, taking particle shape and
size into special consideration. Shape of particles was analyzed on the basis of SEM pictures, and particle size was
measured. Participation of particles in each fixed fraction characterized by range of sizes was analyzed and parameters of
smoke particles of characteristic sizes and function describing aerosol size distribution (ASD) were determinated.
Analyses of scattering profiles were carried out on the basis of both model of scattering on spherical and nonspherical
particles. In the case of spherical particles Rayleigh-Mie model was used and for nonspherical particles analyses firstly
model of spheroids was used, and then Rayleigh-Mie one. For each characteristic particle one calculated value of four
parameters (effective scattering cross section σSCA, effective backscattering cross section σBSCA, scattering efficiency
QSCA, backscattering efficiency QBSCA) and value of backscattering coefficient β for whole particles population. Obtained
results were compared with the same parameters calculated for natural aerosol (cirrus cloud).
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Miroslawa Kaszczuk, Zygmunt Mierczyk, Michal Muzal, "Analyses of scattering characteristics of chosen anthropogenic aerosols," Proc. SPIE 7107, Remote Sensing of Clouds and the Atmosphere XIII, 710712 (15 October 2008); https://doi.org/10.1117/12.800121