Measurements and Modeling of Regional Air Quality in three Southeast United States National Parks
Since the passage of the 1970 Clean Air Act (CAA), regulatory efforts to comply with the 0.12-ppmv National Ambient Air Quality Standard (NAAQS) for O3 have proved inadequate [(NRC); Dimitriades, 1989]. O3 nonattainment continues to be a problem, especially in the southeast United States. This is attributed to the oxidation of NOx in the presence of excessive amounts of biogenically emitted VOCs such as isoprene [Trainer et al., 1987; Chameides et al., 1988]. The new 8- hour O3 National Ambient Air Quality Standard (NAAQS) (0.08 ppm) is likely to bring more suburban and rural locations into noncompliance [Chameides et al., 1997]. Biogenic VOCs emitted by vegetation [Fuentes et al., 2000; Fehsenfeid et al., 1992; Lamb et al., 1993] and anthropogenic VOCs emitted by human activities are both widely present in rural aTeas [Kang et al., 2001; Hagerman et al., 1997]. Previous studies indicate that the influence of these VOCs on important aspects of atmospheric chemistry such as O3 production can be significant [Trainer et al., 1987; Chameides et al., 1988]. Clearly, if O3 concentrations are to be successfully controlled by implementation of control on primary pollutant emissions, the roles of both natural and anthropogenic VOCs in these rural areas must be thoroughly understood. However, our understanding of O3 and VOC budgets in rural areas is still very limited. Emissions of biogenic VOCs as well as the roles of both biogenic and anthropogenic VOCs in O3 production in rural areas are largely uncharacterized [Guenther et al., 2000].
KeywordsNational Park Emission Inventory Base Scenario Biogenic Emission Biogenic Hydrocarbon
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- Byun, D.W. and Ching J.K.S., Eds.,: Science algorithms of the EPA Models-3 Community Multi-scale Air Quality (CMAQ) modeling system, EPA/600/R-99/030, Office of Research and Development, U.S. Environmental Protection Agency, 1999.Google Scholar
- Dimitriades, B., Photochemical oxidant formation: overview of current knowledge and emerging issues. In Atmospheric Ozone Research and its Policy Implications, ed. T. Schneider et al. Elsevier, Amsterdam, 1989.Google Scholar
- J.D. Fuentes, M. Lerdau, R. Atkinson, D. Baldocchi, J.W. Bottenheim, P. Ciccioli, B. Lamb, C. Geron, L. Gu, A. Guenther, T.D. Sharkey, and W. Stockwell, Biogenic hydrocarbons in the atmospheric boundary layer: A review, Bulletin of the American Meteorological Society, 81, 1537–1575, 2000.CrossRefGoogle Scholar
- M.R. Houyoux, C.J. Coats, A. Eyth, and S.C.Y. Lo, Emissions modeling for SMRAQ: A seasonal and regional example using SMOKE, paper presented at AMWA Computing in Environmental Resources and Management Conference, Research Triangle Park, North Carolina, Dec. 2 to Dec. 4, 1996.Google Scholar
- R. Mathur, K. L. Schere, and A. Nathan, Dependencies and sensitivity of tropospheric oxidants precursor concentrations over the Northeast United States: A model study, J. Geophys. Res., 99, 10, 535–10, 552, 1994.Google Scholar
- National Research Council, Rethinking the Ozone Problem in Urban and Regional Air Pollution. National Academy Press, Washington DC, 1991.Google Scholar
- T. Odman and C. L. Ingram, Multiscale air quality simulation platform (MAQSIP): Source code documentation and validation, MCNC Technical Report, ENV-96TR002-v1.0, 1996.Google Scholar