The Transport Chemical Aerosol Model (TCAM)  is a multiphase three-dimensional eulerian grid model designed for modelling dispersion of pollutants (in particular photochemical and aerosol) at mesoscale.
TCAM is developed by the ESMA (Environmental Systems Modeling and Assessment) group of University of Brescia.
^CARNEVALE C, DECANINI E, VOLTA M. (2008). Design and validation of a multiphase 3D model to simulate tropospheric pollution. SCIENCE OF THE TOTAL ENVIRONMENT, vol. 390; p. 166-176, ISSN: 0048-9697, doi: 10.1016/j.scitotenv.2007.09.017