Simulations of ozone formation from different emission sources in Sweden

An emission inventory concerning volatile organic compounds (VOC) and their emission profile linked to their sources in Sweden has been undertaken. The inventory has been used in model simulations to predict the ozone formation from different emission source categories in Sweden. The studies have been carried out using the IVL photochemical trajectory model for two types of air masses which describes clean and polluted air. In Sweden mobile sources contribute to 45% by mass of the total national VOC emissions, 58% of the NOx emissions and to at least 43% of the ozone formation from national sources. In general, the ozone formation in Sweden is more dependent and sensitive to emissions of NOx rather than VOC. 23 refs., 3 figs., 3 tabs