Abstract
We have studied the sensitivity of the coupling coefficients between the spectral extinction coefficients β(λ) and the fractional aerosol concentrations to microstructural variations in the aerosol. We have calculated and analyzed the spectral dependences of the correlation coefficients between the indicated characteristics. We have obtained the multiple regression equations for the fractional concentrations of background atmospheric aerosol and the spectral extinction coefficients at wavelengths of λ = 0.350 µm, 0.532 µm, and 1.060 µm with a large spread in the microphysical characteristics of the aerosol, allowing us to determine its fractional composition with accuracy that is satisfactory for many practical requirements, without using additional measurements of the microstructural parameters or taking into account their spatial variations.
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