Abstract:
The article presents the results of developing a mathematical model for computer simulation of atmospheric pollutant dispersion, taking into account dry deposition and the effects of liquid atmospheric precipitation. This development is based on well-known Gaussian and Ermak mathematical models. In our model, to account for these factors under observed atmospheric precipitation, the plume dispersion equation includes a new multiplier. This multiplier is a concentration increase coefficient, proportional to the increase in pollutant plume mass under the influence of liquid precipitation, derived from the Kelvin equation and Raoult's law. The developed model is implemented as a software package that uses data on known emission sources, meteorological conditions, and monitoring results of pollutant concentrations at specific points within an industrial area. Calculations and a comparative assessment of the model's accuracy have been conducted. It is shown that considering dry deposition and precipitation effects allows for more accurate modeling of pollutant dispersion dynamics in the studied data.
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