Atmospheric peroxyacetyl nitrate measurements over the Brazilian Amazon Basin during the wet season: relationships with nitrogen oxides and ozone

H. B. Singh, D. Herlth, D. O'Hara, L. Salas, A. L. Torres, G. L. Gregory, G. W. Sachse, J. F. Kasting

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Abstract

Complementing PAN were measurements of NO, O3, CO, C2Cl4, radon, and a variety of other chemical and meteorological parameters. Over the Amazon Basin, PAN was present at a mixing ratio of 5 to 125 ppt. Despite strong local and regional convective activity, a distinct vertical structure with highest mixing ratios aloft was observed. Median PAN mixing ratios of 12, 20, and 48 ppt were present in the 0- to 2-, 2- to 4-, and 4- to 6-km height intervals, respectively. Data collected during the cross-basin flights showed that the PAN mixing ratio was highest over the rain forest and declined eastward toward the Atlantic Ocean. -from Authors

Original languageEnglish (US)
Pages (from-to)16,945-16,954
JournalJournal of Geophysical Research
Volume95
Issue numberD10
DOIs
StatePublished - Jan 1 1990

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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