|Jul. 17, 2018, 16:45 - 18:15|
|CS, IMK-TRO, Geb. 30.23, 13.OG, Seminarraum|
Many cities, towns and regions located at the southern fringe of the Alps face remarkably high PM levels particularly during the winter period. The project PMinter aimed 1) to analyse the air quality in S-Styria, S-Carinthia and N-Slovenia, 2) to evaluate local and regional measures to develop effective air quality management plans and finally 3) to support a sustainable improvement of air quality in the project region. Using wood for residential heating is very popular in Austria and in Slovenia. To assess the contribution from wood smoke to the total PM burden and the impact of regional and large scale transport as well as the impact of secondary aerosols were major goals of PMinter.
Due to the complex terrain air quality and exposure assessment is challenging. To resolve sources which are located in valleys and basins, emissions were computed or processed on 1 km x 1 km resolution for the entire program area. A new combined model approach was developed and tested successfully using a sophisticated CTM WRF-Chem on the regional scale and a Lagrangian particle model GRAL on the local scale. A detailed analysis and comparisons with measurements and regional/local scale scenario simulations were carried out. Residential heating using wood was identified as the major source and PM component dominant on the "local scale" (~10 km), secondary inorganic aerosol was the dominant PM component on the regional scale (~ 10 km - 150 km) and above.
Various scenarios were computed. A "local" scenario which may significantly reduce individual heating facilities using solid fuels by district heating and a regional scenario which may reduce ammonia emissions from agriculture by 35% proved to be most effective.
|This event is part of the eventgroup Meteorology Colloquium Karlsruhe|
Dipl.-Met. Dr. Ulrich Uhrner
Institut für Verbrennungskraftmaschinen und Thermodynamik
Technische Universität Graz