Assessing the local scale annual air quality impact of industrial source from characteristic days
An approach of assessing the annual air quality impact of industrial sources from results of simulations performed for characteristic days, representative for different local scale dispersion conditions, is being studied. The methodology for selecting the characteristic days is presented. For classifications with different number of similar day clusters the air–quality directive limit and target values for SO2 are calculated from CALMET/CALPUFF model simulations performed for representative days. These results are compared with target and limit values assessed from results of simulations performed over the entire one year time period. Results show that especially the annual average and hourly maximum fields can be assessed from characteristic days, but it cannot be assured that certain classification with selected characteristic days will provide accurate results.
Keywords: local scale, air quality, air pollution, atmospheric dispersion modelling, k–means, classification, representative days, CALMET/, CALPUFF, industrial sources, industrial pollutants, European Union, EU Air Quality Directive, AQD, simulation, sulphur dioxide, SO2
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