PC-Based MIE Scattering Program for Theoretical Investigations of the OpticalProperties of Atmospheric Aerosols as a Function of Composition and Relative Humidity

摘要

Over the past decade there has been interest in exploring possible relationshipsbetween atmospheric visibility (extinction of light) and the chemical form of aerosols in the atmosphere. A user-friendly, menu-driven program for the personal computer (AT 286 with math co-processor or higher) has been developed which both calculates the equilibrium composition of the atmospheric aerosol of specified compositions (including particle-bound water as a function of relative humidity) and also applies optical parameters from these end-products to estimating scattering and extinction. Presented here is a description of such a program, with a discussion of the assumptions and approaches implicit in it. The program appears to give results which are similar to results reported by others.