Attenuation of optical radiation as a function of particle size spectrum

G. A. Kaloshin

doi:10.1117/12.2504180

13 December 2018 Attenuation of optical radiation as a function of particle size spectrum

G. A. Kaloshin

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108334A (2018) https://doi.org/10.1117/12.2504180
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

The results of calculating the spectral profiles of aerosol extinction coefficients ε(λ), performed using MaexPro software for total and partial size spectra of sea salt aerosol (SSA) particles, are presented. The ε(λ) spectra are shown to substantially differ between partial and total size spectra of particles with Δr = 0.01 – 100 μm. The conditions for use of partial size spectra of SSA particles are determined. For instance, in the calculations of energetics of the optical signal in the wavelength range Δλ = 0.2 – 12 μm, it is expedient to use the ε(λ) data, calculated on the basis of particle size distribution functions for the total size spectrum of SSA particles Δr = 0.01-100 μm. The usability of partial spectra Δr = 0.05 – 50 μm, Δr = 0.1 – 50 μm should be decided depending upon specific problems and prescribed accuracy of estimating the attenuation of optical radiation in the atmosphere.

Citation Download Citation

G. A. Kaloshin "Attenuation of optical radiation as a function of particle size spectrum", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108334A (13 December 2018); https://doi.org/10.1117/12.2504180

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