COMPUTATIONAL TESTS TO IMPROVE THE SPATIAL RESOLUTION OF THE ATMOSPHERIC TRANSFER MATRICES IN THE INTEGRATED ASSESSMENT MODEL MINNI, Briganti, Gino, Cappelletti Andrea, Piersanti Antonio, Ciancarella L., D'Isidoro Massimo, Adani Mario, Guarnieri G., Chinnici M., and D'Elia Ilaria , 20th conference on "Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes" , (2021)