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Titel Observations of oxidation products above a forest imply biogenic emissions of very reactive compounds
VerfasserIn R. Holzinger, A. Lee, K. T. Paw, U. A. H. Goldstein
Medientyp Artikel
Sprache Englisch
ISSN 1680-7316
Digitales Dokument URL
Erschienen In: Atmospheric Chemistry and Physics ; 5, no. 1 ; Nr. 5, no. 1 (2005-01-20), S.67-75
Datensatznummer 250002207
Publikation (Nr.) Volltext-Dokument vorhandencopernicus.org/acp-5-67-2005.pdf
 
Zusammenfassung
Vertical gradients of mixing ratios of volatile organic compounds have been measured in a Ponderosa pine forest in Central California (38.90° N, 120.63° W, 1315m). These measurements reveal large quantities of previously unreported oxidation products of short lived biogenic precursors. The emission of biogenic precursors must be in the range of 13-66µmol m-2h-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 a large 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.
 
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