Development of a photochemical airshed model for Sydney, New South Wales, Australia

This paper describes the development of an airshed modelling system for the Environment Protection Authority of NSW (EPANSW). The airshed modelling system is one of the key outcomes of the Metropolitan Air Quality Study (MAQS). It will provide the tools necessary to aid in the development of an Air Quality Management Plan for photochemical smog within the Sydney, Lower Hunter, and Illawarra regions. ree dimensional airshed model was run for a 2 day generic Sydney oxidant event using historical data and some preliminary results from other MAQS projects. Predicted maximum smog concentrations obtained from the simulations appear to be comparable with the observations.