Austria’s Annual Air Emission Inventory 1990-2021.

Austria’s Annual Air Emission Inventory 1990-2021 provides an overview of national emissions of sulphur dioxide (SO2), nitrogen oxides (NOx), ammonia (NH3), non-methane volatile organic compounds (NMVOC) and particulate matter (PM2.5) from 1990 to 2021. Emission trends and recalculations of these air pollutants, regulated in the European NEC Directive, are described. The results show that between 2020 and 2021 only NOx emissions decreased by 1.8 kt (1.5 %). This was due to the fleet renewal with low-emission vehicles in passenger car and truck traffic, which reduced the emission level despite increased mileage. The emissions of the other NEC pollutants increased from 2020 to 2021: SO2 by 4.4 %, NH3 by 0.5 %, NMVOC by 0.3 % and PM2.5 by 4.5 %. The national emission reduction commitments were met, except for NH3, which exceeded the target by 6 %.