A state of the art nonhydrostatic meteorological model has been coupled with an advanced photochemical model for use in pollution control studies. The first application of this modelling system is to the Lower Fraser valley region of British Columbia, Canada. The region is charcterised by complex topography in a coastal environment, and provides a severe test of the capability of the meteorological model to handle the air flow in the valley. Results of a case study for July 1985 are used to test the performance of the modelling system during an ozone episode. Time series of surface meteorological data and tract pollutant concentrations are used to validate the model prediction. A quantitative analysis of the model errors shows that the modelling system adequately predicts the meteorology and the photochemistry without arbitrary adjustments to the emissions inventory. Improved performance of the ozone forecast would be obtained, however, if the VOC emissions in urban areas were higher than indicated in the emissions inventory.
Hedley. M., Mclaren, R; Jiang,W; Singleton, D.L. 1995. Evaluation of the MC2-Calgrid Photochemical Modelling System. National Research Council Canada
Keywords: MC2-Calgrid, Photochemical, Modelling, System
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