Ground-based measurements of peroxycarboxylic nitric anhydrides (PANs) during the 1999 Southern Oxidants Study Nashville Intensive

James M. Roberts, Frank Flocke, Craig A. Stroud, Daniel Hereid, Eric Williams, Fred Fehsenfeld, William Brune, Monica Martinez, Hartwig Harder

Research output: Contribution to journalArticle

52 Scopus citations

Abstract

Peroxycarboxylic nitric anhydrides (PANs) were measured at Cornelia Fort Airpark during the 1999 Nashville Intensive of the Southern Oxidants Study. The observed concentrations were similar to those measured in the 1994 and 1995 Nashville Intensives. The average daytime ratio of peroxypropionic nitric anhydride (PPN) to peroxyacetic nitric anhydride (PAN) was 13.7%. Extensive measurements were also made of peroxyisobutyric nitric anhydride (PiBN), which confirm the anthropogenic origin of this compound, and its ratio to PAN was 2.4% on average. The daytime ratio of peroxymethacrylic nitric anhydride (MPAN) to.PAN was as high as 25% during periods of high biogenic hydrocarbon (BHC) impact'XA simple linear combination model was used to estimate anthropogenic hydrocarbon (AHC) and BHC contributions to O3production. On average, 80% of the O3 observed over 80 ppbv was attributed to AHC chemistry and 20% to BHC chemistry. An exception to this was a plume derived from a combination of power plant NOx and isoprene emissions from west of the city, in which the BHC contribution was at least 50 to 75%.

Original languageEnglish (US)
Article number4554
JournalJournal of Geophysical Research Atmospheres
Volume107
Issue number21
DOIs
StatePublished - Nov 2002

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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