This figure shows the relative change (in percentage) in the emissions of different pollutants (CO, NOx, NMVOCs, SOx, NH3, CH4, N2O, PM10, PM2.5) in the transport sector between 1990 and 2023.
PM2.5/ PM10: particulate matter with aerodynamic diameter of 2.5μm/10μm or less respectively, including non-exhaust emissions. NMVOCs: non-methane volatile organic compounds SOx: sulphur oxides NOx: nitrogen oxides CO: carbon monoxide NH3: ammonia CH4: methane N2O: nitrous oxide
Methodology
For CO, NOx, NMVOCs, SOx, NH3, PM10 and PM2.5, data officially reported to the European Monitoring and Evaluation Programme (EMEP)/LRTAP Convention were used. For CH4 and N2O data officially reported under the United Nations Framework Convention on Climate Change (UNFCCC) and also under the Kyoto Protocol (KP) were used. Where a complete time series of emission data has not been reported for CO, NOx, NMVOCs, SOx, NH3, PM10 and PM2.5, data have been gap filled according to the methodologies of the European Environment Agency's (EEA's) European Topic Centre on Air and Climate Change (ETC/ACC). Details of the gap-filling procedure for the air pollutant data set are described in the EU emission inventory report under the UNECE's Convention on LRTAP. Similarly, for CH4 and N2O additional information on the gap-filling procedure can be found in the Annual European Union greenhouse gas inventory and inventory document.
