Observations reveal selective absorption in the visible spectrum of dust haze, indicating a significant impact on optical properties.
Based on monitoring data from AERONET stations in spring 2022, variations in the optical and microphysical characteristics of dust aerosol during a large-scale dust haze in the Middle East were analyzed. It was shown that the coarse fraction of dust aerosol dominates the particle size distribution, with a modal radius ranging from 1.70 to 2.95 μm. The imaginary part of the refractive index of dust aerosol particles reaches 0.042, and the single scattering albedo varies from 0.70 to 0.99. Selective absorption of dust aerosol at a wavelength of 675 nm was found to be associated with the presence of the mineral goethite in the dust aerosol particles.
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G. I. Gorchakov (2025) studied this question.
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