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Impact of inert organic nitrate formation on ground-level ozone in a regional air quality model using the carbon bond mechanism 4

Publication ,  Journal Article
Kasibhatla, P; Chameides, WL; Duncan, B; Houyoux, M; Jang, C; Mathur, R; Odman, T; Xiu, A
Published in: Geophysical Research Letters
January 1, 1997

A regional air quality model is used to assess the impact of inert organic nitrate formation on ground-level ozone in the eastern United States during summer. The chemical mechanism used is the Carbon Bond Mechanism 4 (CBM4), which is widely used by regulatory agencies in the United States in air quality modeling applications. Recently, modifications were made to the reaction mechanism involving the organic peroxy radicals which form inert organic nitrates without a critical scientific review of the effects of these changes. In this study, we demonstrate for the first time that the simulated large-scale distribution of ground-level ozone is extremely sensitive to these mechanism changes. Inclusion of radical-radical reactions involving the organic peroxy radicals suppresses inert organic nitrate formation, and leads to significant increases in nitrogen oxide levels over large parts of the model domain. As a consequence of increased rates of ozone photochemical production, ozone mixing ratios are enhanced by as much 10-25 ppbv when these additional radical termination pathways are considered in the model. Copyright 1997 by the American Geophysical Union.

Duke Scholars

Published In

Geophysical Research Letters

DOI

ISSN

0094-8276

Publication Date

January 1, 1997

Volume

24

Issue

24

Start / End Page

3205 / 3208

Related Subject Headings

  • Meteorology & Atmospheric Sciences
 

Citation

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Kasibhatla, P., Chameides, W. L., Duncan, B., Houyoux, M., Jang, C., Mathur, R., … Xiu, A. (1997). Impact of inert organic nitrate formation on ground-level ozone in a regional air quality model using the carbon bond mechanism 4. Geophysical Research Letters, 24(24), 3205–3208. https://doi.org/10.1029/97GL03260
Kasibhatla, P., W. L. Chameides, B. Duncan, M. Houyoux, C. Jang, R. Mathur, T. Odman, and A. Xiu. “Impact of inert organic nitrate formation on ground-level ozone in a regional air quality model using the carbon bond mechanism 4.” Geophysical Research Letters 24, no. 24 (January 1, 1997): 3205–8. https://doi.org/10.1029/97GL03260.
Kasibhatla P, Chameides WL, Duncan B, Houyoux M, Jang C, Mathur R, et al. Impact of inert organic nitrate formation on ground-level ozone in a regional air quality model using the carbon bond mechanism 4. Geophysical Research Letters. 1997 Jan 1;24(24):3205–8.
Kasibhatla, P., et al. “Impact of inert organic nitrate formation on ground-level ozone in a regional air quality model using the carbon bond mechanism 4.” Geophysical Research Letters, vol. 24, no. 24, Jan. 1997, pp. 3205–08. Scopus, doi:10.1029/97GL03260.
Kasibhatla P, Chameides WL, Duncan B, Houyoux M, Jang C, Mathur R, Odman T, Xiu A. Impact of inert organic nitrate formation on ground-level ozone in a regional air quality model using the carbon bond mechanism 4. Geophysical Research Letters. 1997 Jan 1;24(24):3205–3208.
Journal cover image

Published In

Geophysical Research Letters

DOI

ISSN

0094-8276

Publication Date

January 1, 1997

Volume

24

Issue

24

Start / End Page

3205 / 3208

Related Subject Headings

  • Meteorology & Atmospheric Sciences