Photochemistry of ozone formation in Atlanta, GA-Models and measurements

Sanford Sillman; Khalid I. Al-Wali; Frank J. Marsik; Peter Nowacki; Perry J. Samson; Michael O. Rodgers; Leslie J. Garland; Jose E. Martinez; Chris Stoneking; Robert Imhoff; Jai Hoon Lee; Leonard Newman; Judith Weinstein-Lloyd; Viney P. Aneja

doi:10.1016/1352-2310(95)00217-M

Photochemistry of ozone formation in Atlanta, GA-Models and measurements

Sanford Sillman, Khalid I. Al-Wali, Frank J. Marsik, Peter Nowacki, Perry J. Samson, Michael O. Rodgers, Leslie J. Garland, Jose E. Martinez, Chris Stoneking, Robert Imhoff, Jai Hoon Lee, Leonard Newman, Judith Weinstein-Lloyd, Viney P. Aneja

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

Chemical measurements made during an air pollution event in Atlanta, GA have been compared with results from several photochemical simulations. Measurements included O₃, primary reactive organic gases (ROG), aldehydes, PAN, total reactive nitrogen (NO_y) and H₂O₂, with vertical profiles for primary ROG. Photochemical models using two different chemical representations and a range of assumptions about winds, vertical mixing and emissions were used to simulate the event. Results show that assumptions about vertical mixing can cause a variation in simulated surface concentrations of primary hydrocarbons of a factor of two or more. A tendency to underestimate isoprene was found in comparison with measured vertical profiles. The models tend to overestimate concentrations of HCHO, H202 and PAN in comparison with measurements. Peak O₃ and concurrent NO_y from helicopter measurements was used as a basis for evaluating individual model scenarios. Scenarios were developed with different O3 NOx- ROG sensitivity, but only the NO_x- sensitive scenarios are consistent with measured O₃, NO_y and isoprene.

Original language	English
Pages (from-to)	3055-3066
Number of pages	12
Journal	Atmospheric Environment
Volume	29
Issue number	21
DOIs	https://doi.org/10.1016/1352-2310(95)00217-M
State	Published - Nov 1995
Externally published	Yes

Funding

Acknowledgements-This research was supported by the Southern Oxidants Study (SOSta collaborative university, government, and private industry study to improve scientific understanding of the accumulation and effects of photochemical oxidants. Financial and in-kind support for SOS research and assessment activities is provided by the U.S. Environmental Protection Agency, National Oceanic and Atmospheric Administration, National Science Foundation, Department of Energ!,, Tennessee Valley Authority, Electric Power Research Institute, The Southern Company, Co-ordinating Research Council, Duke Power Company, and the States of Alabama, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, and Texas. Additional support was provided by EPA Atmospheric Research, Exposure and Assessment Laboratory (AREAL), grant EPA-CR-822083-C. Discussions with D. Grosjean, C. Andronache and C. Cardelino were especially helpful in preparing the manuscript.

Funders	Funder number
Department of Energ!	EPA-CR-822083-C
National Science Foundation
U.S. Environmental Protection Agency
National Oceanic and Atmospheric Administration

Keywords

hydrocarbons
hydrogen
nitrogen oxides
Ozone
peroxide
photochemical smog

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10.1016/1352-2310(95)00217-M

Cite this

Sillman, S., Al-Wali, K. I., Marsik, F. J., Nowacki, P., Samson, P. J., Rodgers, M. O., Garland, L. J., Martinez, J. E., Stoneking, C., Imhoff, R., Lee, J. H., Newman, L., Weinstein-Lloyd, J., & Aneja, V. P. (1995). Photochemistry of ozone formation in Atlanta, GA-Models and measurements. Atmospheric Environment, 29(21), 3055-3066. https://doi.org/10.1016/1352-2310(95)00217-M

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abstract = "Chemical measurements made during an air pollution event in Atlanta, GA have been compared with results from several photochemical simulations. Measurements included O3, primary reactive organic gases (ROG), aldehydes, PAN, total reactive nitrogen (NOy) and H2O2, with vertical profiles for primary ROG. Photochemical models using two different chemical representations and a range of assumptions about winds, vertical mixing and emissions were used to simulate the event. Results show that assumptions about vertical mixing can cause a variation in simulated surface concentrations of primary hydrocarbons of a factor of two or more. A tendency to underestimate isoprene was found in comparison with measured vertical profiles. The models tend to overestimate concentrations of HCHO, H202 and PAN in comparison with measurements. Peak O3 and concurrent NOy from helicopter measurements was used as a basis for evaluating individual model scenarios. Scenarios were developed with different O3 NOx- ROG sensitivity, but only the NOx- sensitive scenarios are consistent with measured O3, NOy and isoprene.",

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author = "Sanford Sillman and Al-Wali, {Khalid I.} and Marsik, {Frank J.} and Peter Nowacki and Samson, {Perry J.} and Rodgers, {Michael O.} and Garland, {Leslie J.} and Martinez, {Jose E.} and Chris Stoneking and Robert Imhoff and Lee, {Jai Hoon} and Leonard Newman and Judith Weinstein-Lloyd and Aneja, {Viney P.}",

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doi = "10.1016/1352-2310(95)00217-M",

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AU - Samson, Perry J.

AU - Rodgers, Michael O.

AU - Garland, Leslie J.

AU - Martinez, Jose E.

AU - Stoneking, Chris

AU - Imhoff, Robert

AU - Lee, Jai Hoon

AU - Newman, Leonard

AU - Weinstein-Lloyd, Judith

AU - Aneja, Viney P.

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AB - Chemical measurements made during an air pollution event in Atlanta, GA have been compared with results from several photochemical simulations. Measurements included O3, primary reactive organic gases (ROG), aldehydes, PAN, total reactive nitrogen (NOy) and H2O2, with vertical profiles for primary ROG. Photochemical models using two different chemical representations and a range of assumptions about winds, vertical mixing and emissions were used to simulate the event. Results show that assumptions about vertical mixing can cause a variation in simulated surface concentrations of primary hydrocarbons of a factor of two or more. A tendency to underestimate isoprene was found in comparison with measured vertical profiles. The models tend to overestimate concentrations of HCHO, H202 and PAN in comparison with measurements. Peak O3 and concurrent NOy from helicopter measurements was used as a basis for evaluating individual model scenarios. Scenarios were developed with different O3 NOx- ROG sensitivity, but only the NOx- sensitive scenarios are consistent with measured O3, NOy and isoprene.

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Photochemistry of ozone formation in Atlanta, GA-Models and measurements

Abstract

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Keywords

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