Inderscience Publishers

Annual simulation of secondary pollution over northern Italy

A secondary pollution modelling system for simulating airborne dispersion and chemical reactions is applied over a regional scale domain located in the North-West of Italy, where urban and industrial areas are present. It was found an overestimation of NO
in the urban areas, probably due to an underestimation of the vertical diffusivity; the analysis of O
confirms that the discrepancies in O
and NO
are mainly due to local scale effects; the model shows a general underestimation of the observed PM10 concentrations due to the uncertainties in the emission inventories, spatial resolution, and the adopted aerosol modelling approach.

Keywords: air pollution, air quality modelling, photochemistry, secondary pollution, Italy, pollution modelling, airborne dispersion, chemical reactions, emission inventories, spatial resolution, aerosol modelling, environmental pollution

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