Atmos. Chem. Phys. Discuss., 4, 5345-5365, 2004
www.atmos-chem-phys-discuss.net/4/5345/2004/
doi:10.5194/acpd-4-5345-2004
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Observations of oxidation products above a forest imply biogenic emissions of very reactive compounds
R. Holzinger1, A. Lee1, K. T. Paw U2, and A. H. Goldstein1
1Department of Environmental Science, Policy, and Management (ESPM), Division of Ecosystem Sciences, University of California, Berkeley, California, USA
2Atmospheric Science Program, Department of Land, Air, and Water Resources, University of California, Davis, California, USA

Abstract. Measurements of volatile organic compounds in a pine forest (Central California, 38.90° N, 120.63° W, 1315 m) reveal large quantities of previously unreported oxidation products of short lived biogenic precursors. The emission of biogenic precursors must be in the range of 13–66 µmol m−2 h−1 to produce the observed oxidation products. That is 6–30 times the emissions of total monoterpenes observed above the forest canopy on a molar basis. These reactive precursors constitute the largest fraction of biogenic emissions at this site, and are not included in current emission inventories. When oxidized by ozone they should efficiently produce secondary aerosol and hydroxyl radicals.

Citation: Holzinger, R., Lee, A., Paw U, K. T., and Goldstein, A. H.: Observations of oxidation products above a forest imply biogenic emissions of very reactive compounds, Atmos. Chem. Phys. Discuss., 4, 5345-5365, doi:10.5194/acpd-4-5345-2004, 2004.
 
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