Abstract
A model has been developed that uses simulated photographs to display the effect of atmospheric aerosols and gases on visibility. The model is driven by data on landscape features taken from earth-orbiting satellites, combined with digital terrain elevation data, and can be applied on a global scale. The effects of light scattering and absorption by atmospheric aerosols and gases on sky color and on the appearance of objects in the field of view are calculated. The results are displayed as a synthetic color photograph of the expected appearance of the scene. Quantitative comparisons are made between these synthetic images and actual photographs taken from the ground on the specific clear day and smog event days being simulated.
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