Linking Tailpipe to Ambient: Phase 1-3

This project was motivated by the continuing need to improve ambient air quality. This report describes results from a three-phase test program that characterized the emissions from on-road gasoline vehicles, on-road diesel vehicles, and small off-road engines. The overarching goal of the project was to investigate the atmospheric transformations of mobile source emissions to better quantify their contribution to ambient particulate matter (PM) levels – in other words to link tailpipe to ambient. This was done by characterizing the tailpipe emissions from in-use sources and by investigating the atmospheric evolution of the emissions using dilution tunnels and smog chambers. Specific objectives of the test program were to: (1) measure emissions data for use in inventories and chemical transport models; (2) characterize the gas-particle partitioning of primary organic aerosol emissions; and (3) measure the secondary organic aerosol (SOA) production from photo-oxidation of dilute exhaust.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report, Version 1.2
  • Features: Figures; References; Tables;
  • Pagination: 36p

Subject/Index Terms

Filing Info

  • Accession Number: 01535698
  • Record Type: Publication
  • Report/Paper Numbers: CRC PROJECT A-74/E-96, ARB Project R1001
  • Contract Numbers: EPA STAR Project RD834554
  • Files: TRIS
  • Created Date: Jun 23 2014 9:59AM