Dispersion models are computer programs to characterize the atmospheric dispersion of pollutants emitted by a source.
The models serve to assist in the design of effective control strategies to reduce emissions of harmful air pollutants.
Air dispersion models are used by public safety responders and emergency management personnel for emergency planning of accidental chemical releases.
These models are used to determine the consequences of accidental releases of hazardous or toxic materials which may result in fires, spills or explosions.
Results of dispersion modelling can provide an estimate of location impacted areas, ambient concentrations, and be used to determine protective actions appropriate in the event of a release.