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| Titel |
Characterizing ozone production and response under different meteorological conditions in Mexico City |
| VerfasserIn |
W. Lei, M. Zavala, B. Foy, R. Volkamer, L. T. Molina |
| 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 ; 8, no. 24 ; Nr. 8, no. 24 (2008-12-17), S.7571-7581 |
| Datensatznummer |
250006519
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| Publikation (Nr.) |
 copernicus.org/acp-8-7571-2008.pdf |
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| Zusammenfassung |
| Photochemistry in polluted atmospheres, particularly the formation of ozone
(O3), depends not only on pollutant emissions, but also on
meteorological conditions. In this study a 3-D chemical transport model CAMx
was employed to investigate the O3 formation and its response to
emissions reduction under three distinctively different meteorological
conditions in the Mexico City Metropolitan Area during the MCMA-2003 field
measurement campaign. The O3 formation characteristics and sensitivity
to emissions change were found to be weakly dependent on the meteorological
conditions. The evolution of O3 formation and its sensitivity to
NOx and VOC levels were also examined along the photochemical plume
transport pathway. The midday O3 production was found to undergo a
rapid increase in a narrow range of chemical aging, while downwind plumes
were characterized with low and constant O3 production, and plumes
along their transport pathway were characterized by a combination of the
two. The O3 formation was more VOC sensitive near the source area, but
as the plume became chemically aged, O3 formation became progressively
VOC insensitive and more NOx sensitive. |
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