Journal
ATMOSPHERIC ENVIRONMENT
Volume 35, Issue 24, Pages 4211-4221Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S1352-2310(01)00186-8
Keywords
regulatory models; dispersion; air quality modeling; complex terrain; model evaluation; dividing streamline height
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This paper demonstrates the development of a model designed to estimate concentrations associated with a source situated in complex terrain. The model is designed to provide estimates of concentration distributions and is thus primarily suitable for regulatory applications. The model assumes that the concentration at a receptor is a combination of concentrations caused by two asymptotic states: the plume remains horizontal, and the plume climbs over the hill. The factor that weights the two states is a function of the fractional mass of the plume above the dividing streamline height. The model has been evaluated against data from four complex terrain sites. The evaluation shows that the model performs at least as well as CTDMPLUS (Perry, S.G., 1992. CTDMPLUS, a dispersion model for sources near complex topography. Part I: technical formations. Journal of Applied Meteorology 31, 633-645), a more comprehensive model designed for complex terrain applications. (C) 2001 Elsevier Science Ltd. All rights reserved.
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