Modelling of Ambient Air Quality Over Visakhapatnam Bowl Area

Visakhapatnam bowl area situated in coastal Andhra Pradesh, India hosts several major industries. These industries contribute significantly to the air pollution in this coastal city. In addition, the vehicular traffic also contributes in the deterioration of ambient air quality in the city. The ambient air quality of Visakhapatnam bowl area with respect to oxides of nitrogen due to industrial and vehicular sources has been examined using mathematical models. Gaussian Plume Model (GPM) is used for industrial sources and CALINE3 model is used for line sources. The computed 8 hourly averaged concentrations have been compared with those monitored concentrations at different receptors in two seasons, namely, summer and winter. The validation of the models has been carried out through Quantile-Quantile plots and by computing several statistical errors.