A General Gaussian Diffusion-Deposition Model for Elevated Point Sources

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Abstract
A modification of the Gaussian plume model is proposed for the deposition of fine and heavy particulates and gases. It combines a downward-sloping plume to account for settling and the assumption of constant deposition velocity to obtain a solution satisfying an integral mass conservation equation specifying that the decrease in the airborne flux equals the deposition. An example is given comparing this method with the conventional Gaussian model for dry deposition of gases or fine particulates. Abstract A modification of the Gaussian plume model is proposed for the deposition of fine and heavy particulates and gases. It combines a downward-sloping plume to account for settling and the assumption of constant deposition velocity to obtain a solution satisfying an integral mass conservation equation specifying that the decrease in the airborne flux equals the deposition. An example is given comparing this method with the conventional Gaussian model for dry deposition of gases or fine particulates.

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