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Opt Express. 2019 Feb 18;27(4):A92-A116. doi: 10.1364/OE.27.000A92.

Backscattering ratios of soot-contaminated dusts at triple LiDAR wavelengths: T-matrix results.

Abstract

This paper reports on accurate calculations of backscattering properties of transported and soot-contaminated dust at triple wavelengths (0.355, 0.532, and 1.064 μm, respectively) by using the invariant imbedding T-matrix method. The changes of backscattering ratios from bare to soot-contaminated dust were systematically investigated by employing super-spheroidal dust and fractal soot models. The impacts of morphology change and soot absorptivity on backscattering ratios of soot-contaminated dust were clarified. In addition, it was found that adhesion has a large impact on the backscattering ratios. However, the results of non-contact soot-contaminated dust appear to be closer to observations than those of contact mixing.

PMID:
30876006
DOI:
10.1364/OE.27.000A92

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