Effects of Dust Particle Morphology with Hydrated Water Content on Microwave Signal Attenuation using Compaq Visual FORTRAN Software

Mineral Aerosol dusts have complex non spherical shapes and varying composition. This is utilizes data on morphology (size and shape) and composition of dust particles to determine the extent to which the optical properties of real particles differ from those of spheres. In morphology we find the aspect ratio, circularity factor and radius than discuss the size and shape of the aerosol dust particle. The shape of atmospheric mineral particle of 0.1-10 radius was study by electron microscopy applied to the sample collected in national Physical Laboratory. In all the region, the mineral particle showed irregular shapes with a medium aspect ratio L/D (ratio of the longest dimension l to the orthogonal width d) . The aspect ratio exhibited no clear size dependence, the circularity factor is (Perimeter)/4*3.14*area tended to decrease with increase radius, suggestion the presence of aggregated mineral particle at large sizes.