Near-Field Single-Scattering Calculations of Aerosols: Sensitivity Studies

We model the effects of photosensitive parameters aerosols on their optical properties to provide a solid framework for further experimental and theoretical studies. A spherical dust particle is used study ambient medium, size, surface roughness, wavelength, imaginary part complex refractive index. Five Gaussian random spheres with different aspect ratios are simulated dependence aerosol light scattering shape distribution. To investigate influence composition, we two typical kaolinite-like particles (pure composite) collected from Southwest Sahara, 0 2% hematite at mixing states. Using method discrete-dipole approximation in DDSCAT, comparative performed Mueller matrix elements, scattering, absorption, extinction efficiencies, single albedo, linear depolarization ratio as indicators. For single, microscopic particles, near-field calculations carried out. The results show that intensity backscattering efficiency decreases water compared dry air. Light visible range more efficient experiments. small number impurities sample will increase its absorbing properties, but, general, efficiencies strongly depend single-particle state. Smaller diameter comparable wavelength incident higher but lower intensities than larger while roughness shown alter polarizability has negligible effect single-scattering albedo. Moreover, shapes have strong degree polarization, using over elliptic can underestimate by up 4%. Finally, variation RI albedo 35.8%.