Agricultural emission factors of particulate matter and non-methane volatile organic compounds for Switzerland

Within the framework of the Gothenburg Protocol of the UNECE Convention on Long-Range Transboundary Air Pollution (CLRTAP), Switzerland is committed to report the current emissions. The EMEP/EEA air pollutant emission inventory Guidebook 2016 provides a basis for the calculation. For the section 3.B (Manure Management), we conducted a literature study on emissions of particulate matter (PM) and non-methane volatile organic compounds (NMVOC). Based on the results, we present an overview on recently published PM emission factors (EFs) for dairy cattle and a procedure for deriving EFs for total suspended particles (TSP), PM10 and PM2.5 which includes gap filling where the data basis is incomplete. The suggested EFs for the PM fractions are up to eleven times smaller than the values listed in the Guidebook. Furthermore, we discuss questions arising with currently used EFs for PM and NMVOC.