Design and validation of a multiphase 3D model to simulate tropospheric pollution.

This work presents the Transport and Chemical Aerosol Model (TCAM) formulation and its validation in the frame of CityDelta-CAFE project. TCAM is a 3D eulerian multiphase model simulating tropospheric secondary pollution at mesoscale. It is included in the GAMES (Gas Aerosol Modelling Evaluation System) modelling system, designed to support the analysis of secondary pollution dynamics and to assess the impact of emission control strategies. The presented validation assessment has been performed in the frame of the CityDelta II project over the Milan domain and concerns both gas and aerosol 1999 simulations. Ozone, nitrogen oxides and aerosol computed and observed patterns have been compared and analysed by means of statistical indicators showing high model performances for both winter and summer pollution regimes.

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