ATMOSPHERIC PARTICULATE ANALYSIS USING ANGULAR LIGHT-SCATTERING

Light scattering matrix elements measured by a polar nephelometer, is used to develop a procedure for estimating the characteristics of atmospheric particulates was developed. A theoretical library data set of scattering matrices derived from Mie theory is tabulated for a range of values of the size parameter and refractive index typical of atmospheric particles. Integration over the size parameter yields the scattering matrix elements for a variety of hypothesized particulate size distributions. A least squares curves fitting technique is used to find a best fit for the experimental measurements.