Author(s)

B. Schell, I.J. Ackermann, H. Hass and A. Ebel

Abstract

Secondary Organic Aerosol Modelling with MADE: Biogenic and Anthropogenic Contributions A contribution to subproject GLOREAM B Schell\ I.J. Ackermann*, H Hass* and A. EbeP *Ford Forschungszentrum Aachen, Atmospheric Science, Dennewartstr. 25, 52068 Aachen, Germany ^University of Cologne, EURAD, Aachener Str. 201-209, 50931 Cologne, Germany Introduction Atmospheric paniculate organic carbon represents a significant fraction of the atmospheric aerosol. Measurements show that organic carbon (OC) contributes about 30 % and 25 % to the average fine particle mass under urban and non- urban conditions (Heintzenberg, 1989). OC is divided in primary OC emitted directly by sources and secondary OC. Secondary organic aerosol (SOA) is formed in the atmosphere by condensation of low-volatility products of the atmospheric degradation of reactive organic gases. These precursor gases are of both, anthropogenic and biogenic

Keywords