Characterizing ozone production and response under different meteorological conditions in Mexico City
Item
Title (Dublin Core)
Characterizing ozone production and response under different meteorological conditions in Mexico City
Description (Dublin Core)
Photochemistry in polluted atmospheres, particularly the formation of ozone (O<sub>3</sub>), 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 O<sub>3</sub> 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 O<sub>3</sub> formation characteristics and sensitivity to emissions change were found to be weakly dependent on the meteorological conditions. The evolution of O<sub>3</sub> formation and its sensitivity to NO<sub>x</sub> and VOC levels were also examined along the photochemical plume transport pathway. The midday O<sub>3</sub> production was found to undergo a rapid increase in a narrow range of chemical aging, while downwind plumes were characterized with low and constant O<sub>3</sub> production, and plumes along their transport pathway were characterized by a combination of the two. The O<sub>3</sub> formation was more VOC sensitive near the source area, but as the plume became chemically aged, O<sub>3</sub> formation became progressively VOC insensitive and more NO<sub>x</sub> sensitive.
Creator (Dublin Core)
Lei, W.
Zavala, M.
Foy, B.
Volkamer, R.
Molina, L. T.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-8-7571-2008
https://acp.copernicus.org/articles/8/7571/2008/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
