Record Display for the EPA National Library Catalog


Main Title Initial Test of the Applicability of Invariant Modeling Methods to Atmospheric Boundary Layer Diffusion.
Author Donaldso, Coleman duP. ; Hils, Glenn R. ;
CORP Author Aeronautical Research Associates of Princeton, Inc., N.J.
Year Published 1971
Report Number ARAP-169; EPA-68-02-0014; 1149;
Stock Number PB-211 897
Additional Subjects ( Air pollution ; Atmospheric diffusion) ; Mathematical models ; Mixing ; Wind(Meteorology) ; Temperature ; Turbulent diffusion ; Shear stress ; Atmospheric boundary layer
Library Call Number Additional Info Location Last
NTIS  PB-211 897 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 64p
The study concerned the movement of air pollution in the atmosphere. With only prior knowledge of the mean wind and temperature profiles and using a relationship between the macroscale and the dissipation scale derived for laboratory scale flow, the structure of turbulence and the diffusion of matter were simulated well within an order of magnitude of observed values. In most cases, the verification is within a factor of two. Perhaps most importantly all of the classical requirements for asymptotic behavior of the diffusion were met. The predictions were somewhat more exact for neutral and unstable temperature stratification than for stably stratified atmospheres. A greater understanding of the physics of turbulent transport has been achieved and has led directly to further improvement and refinement of the model. The dependence of the scale on stability has been clarified.