Abstract

Knowledge of atmospheric particle size distributions (PSDs) is important for understanding a variety of atmospheric components, such as characteristics of aerosol light scattering and absorption, influence of aerosol chemical components in aerosol optical properties. Here, an analytical method has been implied to size segregated aerosol particles of the continental, rural, urban and marine region for finding the variability of aerosol size distribution at different background locations. Different techniques are used for measuring the absorption and scattering of aerosol particles and in this study measurement of aerosol absorption coefficient is explained based on filter techniques, in which size segregated aerosol particles of diameters less than diameter of 1 micrometer and 10 micrometer are collected by using a two-stage high flow non-rotating Micro-Orifice Uniform Cascade Impactor (MOUDI). These filter samples are used for reflectance techniques where monochromatic and integrating reflecting spheres are used for measuring the light absorption coefficient. The absorption coefficient can be used to determine the single scattering albedo (SSA) and are used to specify the chemical components of aerosol particles. SSA of aerosol particles different background locations are presented in this study by using previously published research data in Peer Reviewed Journals. Comparing SSA with size segregated particle concentration, seasonal variability of aerosol optical properties of different locations of different surroundings are investigated for local aerosol source.