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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
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 5, no. 1 ; Nr. 5, no. 1 (2005-01-20), S.67-75 |
| Datensatznummer |
250002207
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| Publikation (Nr.) |
 copernicus.org/acp-5-67-2005.pdf |
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| 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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