Inderscience Publishers

An operational model for vehicular pollution from a road network

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We present a brief review of the mathematical model CAR-FMI (contaminants in the Air from a Road, by the Finnish Meteorological Institute). The model has been developed for regulatory purposes, for predicting dispersion of pollution from a road network. It consists of an emission module, treatment of the meteorological time-series, an atmospheric dispersion module, and statistical analysis of the computed time-series of concentrations. The dispersion module is based on an analytical solution of the Gaussian diffusion equation for a finite line source; the solution allows for any wind direction with respect to the road. The model also takes into account the chemical transformation of nitrogen oxides. The program is commercially available as a personal computer version in either DOS or Windows environment; using the model does not require specialist training.

Keywords: CAR-, FMI, roads, vehicle pollution, air pollution models, environmental pollution, mathematical modelling, vehicle emissions, nitrogen oxide

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