Study of atmospheric visibility pertaining to soot scavenging by sulfate droplets

Ioannidou, Melina P.

doi:10.1016/j.jqsrt.2004.12.021

Cited by 4 publications

(1 citation statement)

References 27 publications

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“…2(d), 2(e), and 2(f), the results showed the less oscillation in the forward scattering region that contributed by the parallel polarization of light. The results suggested that the larger particle contributes more oscillations and scattering intensity to the angular scattering curve (Ioannidou, 2005;Redmond et al, 2010;Zhang and Rubini, 2011;Dlugach et al 2012;Sorensen et al, 2014).…”

Section: Resultsmentioning

confidence: 95%

Measurement and Evaluation of Elastic Light Scattering from a Single Levitated Irregular Particle

Kao

Huang

Chen

et al. 2017

Aerosol Air Qual. Res.

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This study introduced a convenient experimental method to measure and to evaluate the elastic light scattering from a single irregular particle. The particle levitation system was used to trap a particle and to maintain the particle at null position by utilizing electrodynamic balance. Moreover, the Raman spectroscopy was applied to observe the light scattering of a single particle. The influences of relative humidity on optical properties of particle were also discussed. For comparison with experimental results, the classical Lorenz-Mie theory was employed to compute the phase function of a single particle. The experimental results demonstrated that the measurements of light scattering were in approximate trend with the model. In particular, numerical simulation results showed that the scattering intensity was underestimated in backward scattering directions. Consequently, the effect of surface roughness and irregular morphology of particle might be resulted in deviations of backward scattering. Besides, the experiments suggested that while using the weighted average method to estimate the refractive index might cause some significant deviations of light scattering between measuring and modeling.

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Section: Resultsmentioning

confidence: 95%

Measurement and Evaluation of Elastic Light Scattering from a Single Levitated Irregular Particle

Kao

Huang

Chen

et al. 2017

Aerosol Air Qual. Res.

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Comprehensive T-matrix reference database: A 2004–06 update

Mishchenko

Videen

Khlebtsov

et al. 2007

Journal of Quantitative Spectroscopy and Radiative Transfer

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a b s t r a c tThe T-matrix method is among the most versatile, efficient, and widely used theoretical techniques for the numerically exact computation of electromagnetic scattering by homogeneous and composite particles, clusters of particles, discrete random media, and particles in the vicinity of an interface separating two half-spaces with different refractive indices. This paper presents an update to the comprehensive database of Tmatrix publications compiled by us previously and includes the publications that appeared since 2007. It also lists several earlier publications not included in the original database.Published by Elsevier Ltd.

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T-matrix modeling of linear depolarization by morphologically complex soot and soot-containing aerosols

Mishchenko

Liu

Mackowski

2013

Journal of Quantitative Spectroscopy and Radiative Transfer

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a b s t r a c tWe use state-of-the-art public-domain Fortran codes based on the T-matrix method to calculate orientation and ensemble averaged scattering matrix elements for a variety of morphologically complex black carbon (BC) and BC-containing aerosol particles, with a special emphasis on the linear depolarization ratio (LDR). We explain theoretically the quasi-Rayleigh LDR peak at side-scattering angles typical of low-density soot fractals and conclude that the measurement of this feature enables one to evaluate the compactness state of BC clusters and trace the evolution of low-density fluffy fractals into densely packed aggregates. We show that small backscattering LDRs measured with groundbased, airborne, and spaceborne lidars for fresh smoke generally agree with the values predicted theoretically for fluffy BC fractals and densely packed near-spheroidal BC aggregates. To reproduce higher lidar LDRs observed for aged smoke, one needs alternative particle models such as shape mixtures of BC spheroids or cylinders.Published by Elsevier Ltd.

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Study of atmospheric visibility pertaining to soot scavenging by sulfate droplets

Cited by 4 publications

References 27 publications

Measurement and Evaluation of Elastic Light Scattering from a Single Levitated Irregular Particle

Measurement and Evaluation of Elastic Light Scattering from a Single Levitated Irregular Particle

Comprehensive T-matrix reference database: A 2004–06 update

T-matrix modeling of linear depolarization by morphologically complex soot and soot-containing aerosols

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