Andreas Massling, Jacob Klenø Nøjgaard, Thomas Ellermann, Matthias Ketzel & Claus Nordstrøm 2011: Particle project report 2008 – 2010. Particulate contribution from traffic in Copenhagen. National Environmental Research Institute, Aarhus University. 62 pp.- NERI Technical report No. 837.
This report presents the results from the third particle research project. The project was carried out for the Danish Environmental Protection Agency by NERI during the period from 2008 to 2010. The main aim of the projects was to continue the long term research on levels, trends, chemical composition and sources of particulate air pollution in Denmark. The results show that there is a tendency for a decrease in particulate mass since 2002 and that the number of particles has decreased by a factor of two at H.C. Andersens Boulevard, Copenhagen. It is mainly particles with diameter from 10-40 nm that has decreased primarily due to reduced emissions related to traffic. Moreover, the chemical composition of PM2.5 and PM10 was measured during two monthly field campaigns in 2008 and 2009 at the rural measurement station Lille Valby situated 30 km west of Copenhagen. Source apportionment modelling using COPREM was used to determine the sources of the different chemical components of the particle mass.
