Modelling evaluation of PM10 exposure in Northern Italy in the framework of CityDeltaIII project

Abstract

This work presents an application of the multiphase model TCAM to evaluate the impact of three different emission control strategies in northern Italy. The domain, including the whole of Lombardia and part of confining regions is often affected by severe PM10 levels, far from the European standard laws. This fact is due to high industrial and residential sites, to a close road net and to frequently stagnating meteorological conditions; for these reasons, the area is a very important benchmark for modelling simulations. The impact evaluation has been performed in terms of both yearly mean value and 50 µg/m3 threshold exceedance days in nine points of the domain, chosen to be representative of the chemical and meteorological regimes of the area under study. The results show that even if the three emission reduction scenarios improve air quality all over the domain, in particular in the area with higher emission density, the PM10 levels remain far from the 2020 European standards.