Modeling Optical Properties of Non?Cubical Sea?Salt Particles

Dry sodium chloride forms cubic crystals, while marine aerosol particles often display more or less irregular deviations from this ideal form. In study, three non-ideal cuboidal and octahedral model geometries are investigated. Superellipsoids tested as a to simulate the linear backscatter depolarization ratio extinction-to-backscatter ratio. Gaussian random cubes well convex polyhedra investigated possible candidates quantify error introduced by simplified geometries, such superellipsoids. Uncertainties in real imaginary part of refractive index studied, their effect on optical properties is compared that caused morphological variations. Optical calculations were performed at wavelength 532 nm using discrete dipole approximation T-matrix method. The considered size range representative for generated low moderate wind speeds. It found superellipsoids predict ratios consistent with observations. On other hand, strongly overestimate surface perturbations result positive shift By contrast, yield results randomly scatter about those regular cubes. Thus, promising candidate modeling errors, not. comparable magnitude geometry.