Dispersion modelling is the mathematical simulation of emissions as they are transported throughout the atmosphere. Dispersion modelling is a key component in any integrated approach to exposure assessment, or determining compliance with air quality criteria.
Dispersion models replicate atmospheric conditions and provide an estimate of the concentration of pollutants as they travel away from an emission source. Dispersion models can be used to:
Dispersion models are used when a prediction of ambient concentrations is necessary.
A variety of air quality dispersion models may be required to accurately describe the range of emissions from a single facility.
ISC-AERMOD View, licensed by Lakes Environmental Software (Canada) is the regulatory dispersion model of choice based on the planetary boundary layer theory. This model is often used by EHRCON to assess pollution concentrations and deposition from a wide variety of sources.