The influence of model resolution on ozone from industrial VOC releases Public Deposited

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  • March 22, 2019
  • Henderson, Barron Halton
    • Affiliation: Gillings School of Global Public Health, Department of Environmental Sciences and Engineering
  • The Houston ozone (O3) nonattainment area frequently experiences large industrial releases of volatile organic compounds (VOCs). Released VOCs create plumes of O3 with production rates 2 to 5 times higher than typical urban conditions. Ozone concentrations produced by simulated industrial releases are sensitive to emission inventory (EI) resolutions. This study uses Process Analysis to compare O3 production in two simulated industrial VOC releases using different EI resolutions over equal area. Both resolutions produce the same total "Odd Oxygen" (Ox) mass, but the finer resolution reduces total O3 mass (3%) while increasing the peak O3 concentration (46%). Emission inventory resolution alters the processes producing Ox and alters the O3 response to changes in NOx and VOC emissions. The latter is an important factor in assessing efficacy of control policies and, potentially, which control path to pursue. Future studies will quantify the effects of EI resolution on specific emission reduction strategies.
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  • In Copyright
  • Vizuete, William
  • Open access

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