Here are examples of three Australian states and the air models that are currently approved and accepted in these states:
Victoria: In Victoria, AERMOD is the preferred assessment tool. AERMOD is a short range (up to 50 km radius) air dispersion model which dispersion algorithms are built to take into account atmospheric (weather) conditions and terrain features.
New South Wales accepts a number of models including: AUSPLUME, CALPUFF and CALMET.
AUSPLUME is accepted for sites that are situated away from the coastline; Similarly to AERMOD, AUSPLUME calculated the air dispersion and pollutant concentrations based on the terrain and the meteorological data.
CALPUFF model is used in applications involving the long-range transport of pollutants (> 50 km). It is also used on a case-by-case basis in situations involving complex flow and varying parameters within 50 km of the source.
Queensland: no particular air dispersion model is preferred.
Though no particular model is specified as preferred the Queensland guidelines refers to the guidance given in the ‘Approved methods for the modelling and assessment of air pollutants in NSW and VIC’.