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OLS Field Name OLS Field Data
Main Title U.S. Environmental Protection Agency's Model for Complex Terrain Applications.
Author Perry, S. G. ; Finkelstein, P. L. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 1990
Year Published 1990
Report Number EPA/600/D-90/034;
Stock Number PB90-221912
Additional Subjects Atmospheric models ; Air pollution ; Dispersions ; Convection ; Plumes ; Two dimensional flow ; Meetings ; Mathematical models ; Exhaust emissions ; Atmospheric diffusion ; Contaminants ; Reprints ; US EPA
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB90-221912 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/27/1990
Collation 8p
Abstract The Complex Terrain Dispersion (CTDMPLUS), a point-source, steady-state, dispersion model for complex terrain applications, is described and its performance summarized. The model is unique in the manner in which it simulates the flow and plume distortion near the terrain. Emphasis is given to windward side impacts. Simplicity is maintained by applying flow distortion corrections to flat-terrain, Gaussian and bi-Gaussian pollutant distributions. The performance of CTDMPLUS contrasts with that of a currently-recommended, complex-terrain, regulatory model. In stable or neutral conditions, CTDMPLUS shows relatively small average bias compared to field observations. The root-mean-square differences between CTDMPLUS and the observations are consistently lower and the percent of predictions within a factor of two are significantly higher than those of the regulatory model. In convective conditions, with comparisons unpaired in time or space, CTDMPLUS performs very well.
Supplementary Notes Proceedings of the International Conference of the Clean Air Society of Australia and New Zealand (10th).
Title Annotations Reprint: U.S. Environmental Protection Agency's Model for Complex Terrain Applications.
Category Codes 55B; 68A; 46B
NTIS Prices PC A02/MF A01
Primary Description 600/09
Document Type NT
Cataloging Source NTIS/MT
Control Number 021118292
Origin NTIS
Type CAT