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Demonstrating attainment in Atlanta using urban airshed model simulations: Impact of boundary conditions and alternative forms of the NAAQS

Publication ,  Journal Article
Saylor, RD; Chameides, WL; Chang, ME
Published in: Atmospheric Environment
March 1, 1999

Urban Airshed Model-Version IV (UAM-IV) simulations on 7-8 July, 1988 for the Atlanta, Georgia, nonattainment area are used to investigate how recent changes in the National Ambient Air Quality Standard (NAAQS) and changes in boundary concentrations may affect attempts to comply with the standard through local emissions reductions. According to model results, the recently promulgated 8 h NAAQS at a level of 0.08 ppmv will require larger emission reductions to comply with the standard than those-that are necessary to comply with the previous 1 h/0.12 ppmv NAAQS. Regardless of the form of the NAAQS or the magnitude of the concentrations of O3 and its precursors at the model domain boundary, UAM-IV simulations for Atlanta predict that NO(x) (NO + NO2) emission reductions are more effective than volatile organic compound reductions in mitigating O3 pollution. Moreover, the simulations indicate that NO(x) emission reductions greater than 60-75% would be required to demonstrate attainment under either form of the standard, even if boundary concentrations of O3 and its precursors were substantially reduced. Further research is necessary to determine if this weak response to emission controls is truly representative of the real atmosphere, or is a result of the meteorological conditions specific to this episode, or is an artifact of the UAM-IV model or its inputs.

Duke Scholars

Published In

Atmospheric Environment

DOI

ISSN

1352-2310

Publication Date

March 1, 1999

Volume

33

Issue

7

Start / End Page

1057 / 1064

Related Subject Headings

  • Meteorology & Atmospheric Sciences
  • 0907 Environmental Engineering
  • 0401 Atmospheric Sciences
  • 0104 Statistics
 

Citation

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MLA
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Saylor, R. D., Chameides, W. L., & Chang, M. E. (1999). Demonstrating attainment in Atlanta using urban airshed model simulations: Impact of boundary conditions and alternative forms of the NAAQS. Atmospheric Environment, 33(7), 1057–1064. https://doi.org/10.1016/S1352-2310(98)00322-7
Saylor, R. D., W. L. Chameides, and M. E. Chang. “Demonstrating attainment in Atlanta using urban airshed model simulations: Impact of boundary conditions and alternative forms of the NAAQS.” Atmospheric Environment 33, no. 7 (March 1, 1999): 1057–64. https://doi.org/10.1016/S1352-2310(98)00322-7.
Saylor, R. D., et al. “Demonstrating attainment in Atlanta using urban airshed model simulations: Impact of boundary conditions and alternative forms of the NAAQS.” Atmospheric Environment, vol. 33, no. 7, Mar. 1999, pp. 1057–64. Scopus, doi:10.1016/S1352-2310(98)00322-7.
Journal cover image

Published In

Atmospheric Environment

DOI

ISSN

1352-2310

Publication Date

March 1, 1999

Volume

33

Issue

7

Start / End Page

1057 / 1064

Related Subject Headings

  • Meteorology & Atmospheric Sciences
  • 0907 Environmental Engineering
  • 0401 Atmospheric Sciences
  • 0104 Statistics