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| Titel |
Impact of organic nitrates on urban ozone production |
| VerfasserIn |
D. K. Farmer, A. E. Perring, P. J. Wooldridge, D. R. Blake, A. Baker, S. Meinardi, L. G. Huey, D. Tanner, O. Vargas, R. C. Cohen |
| 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 ; 11, no. 9 ; Nr. 11, no. 9 (2011-05-04), S.4085-4094 |
| Datensatznummer |
250009690
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| Publikation (Nr.) |
 copernicus.org/acp-11-4085-2011.pdf |
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| Zusammenfassung |
| Urban O3 is produced by photochemical chain reactions that amplify
background O3 in mixtures of gaseous nitrogen oxides (NOx) and
organic molecules. Current thinking treats NOx and organics as
independent variables that limit O3 production depending on the
NOx to organic ratio; in this paradigm, reducing organics either has no
effect or reduces O3. We describe a theoretical counterexample where
NOx and organics are strongly coupled and reducing organics increases
O3 production, and illustrate the example with observations from Mexico
City. This effect arises from chain termination in the HOx and NOx
cycles via organic nitrate production. We show that reductions in VOC
reactivity that inadvertently reduce organic nitrate production rates will
be counterproductive without concurrent reductions in NOx or other
organics. |
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