An Assessment of Modelling Ozone Control Abatement Strategies in Portugar: The Lisbon Urban Area

Summary

The Lisbon Region (LR), by its urban and industrial importance is the example of a coastal region subject to high emission levels and potentially favourable to the development of high levels of photochemical pollutants, particularly tropospheric ozone. The application of the photochemical modelling system, MAR IV, suggest that the current ozone formation is NO _x -limited and that the forest VOC emissions represent a negligible contribution toward the ozone formation in this region. On the other hand, small industrial sources and particularly road traffic emissions arise as being the principal precursors sources for the development of short-term ozone high concentration levels in the Lisbon Region. Finally, in accordance with the previous conclusions and keeping in mind the future evolution of precursor emissions, it was possible to modelling alternative scenarios so as to define an efficient abatement strategy for the formation of tropospheric ozone in the Lisbon Region.