||Estimation of maximum surface concentrations from sources near complex terrain in neutral flow /
Lawson, R. E. ;
Snyder, W. H. ;
Thompson, R. S.
||Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
|| U.S. Environmental Protection Agency, Office of Research and Development, Atmospheric Sciences Research Laboratory,
Air pollution ;
Atmospheric diffusion ;
Surface air ;
Ground level ;
Wind tunnel tests ;
Atmospheric boundary layer ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||13 pages ; 28 cm
A wind tunnel study was conducted to determine maximum ground-level concentrations for a variety of source positions (locations and heights) both upstream and downstream of two model hills, an axisymmetric hill and a two-dimensional ridge, immersed in a simulated neutral atmospheric boundary layer. Terrain amplification factors derived from these measurements were used to construct contour plots showing regions or 'windows' of enhanced ground-level concentration. These windows of enhanced ground-level concentration are shown to be a useful guide for estimating the effects of complex terrain on pollutant dispersion or, conversely, for determining source locations near complex terrain which minimize the enhancement of ground-level concentration.
"Journal article." "EPA/600/J-89/067." Microfiche.