Air Dispersion Modeling

Air dispersion modeling is a mathematical simulation of the transport, dispersion, and transformation of pollutants in the atmosphere. It is a means of estimating downwind air pollution concentrations given data about the pollutant emissions and nature of the atmosphere. Modern air pollution models are computer programs that calculate the pollutant concentration downwind of a source using information on the:

  • Contaminant emission rate
  • Characteristics of the emission source
  • Local topography
  • Meteorology of the area
  • Ambient or background concentrations of pollutant

Dispersion models can estimate downwind concentrations of contaminants over varying averaging periods – either short term (one-hour/24-hr) or long term (annual).

Apercu conducted several air quality modeling works as part of the impact assessment of the air quality module for various EIS and EPRMP that have been prepared.

To see our Air Dispersion Modeling works, please visit our Projects page.