| Main Title |
Diffusion in the Stably Stratified Atmospheric Boundary Layer. |
| Author |
Hunt, J. C. R. ;
|
| CORP Author |
American Meteorological Society, Boston, MA. ;Cambridge Univ. (England). Dept. of Applied Mathematics and Theoretical Physics.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| Year Published |
1985 |
| Report Number |
EPA/600/J-85/329; |
| Stock Number |
PB86-171659 |
| Additional Subjects |
Plumes ;
Air pollution ;
Transport properties ;
Mathematical models ;
Industrial wastes ;
Reprints ;
Air quality ;
Lagrangian functions
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB86-171659 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12p |
| Abstract |
The assumptions, techniques and methods of improving Gaussian plume modeling are briefly reviewed. Then the statistical theory for the diffusion of a substance S into a turbulent flow in homogeneous and inhomogeneous flows, and neutral and stably stratified flows is introduced. In stably stratified flows the mixing of the temperature and the substance S between fluid elements is of critical importance in determining the growth of a plume, so that the plume's depth is not in general determined by the displacements of fluid elements through the source, not by the conventional Lagrangian statistics. But the plume depth, far downwind of the source, can be related to the local thermal diffusivity in the atmospheric boundary layer. The conditions are deduced under which this result can be used in stable conditions. The structure of turbulence in the stable boundary layer (SBL) is discussed. |
| Supplementary Notes |
Pub. in Jnl. of Climate and Applied Meteorology, v24 n11 p1187-1195 Nov 85. Prepared in cooperation with Cambridge Univ. (England). Dept. of Applied Mathematics and Theoretical Physics. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Diffusion in the Stably Stratified Atmospheric Boundary Layer. |
| PUB Date Free Form |
c1985 |
| Category Codes |
13B; 68A |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
612921767 |
| Origin |
NTIS |
| Type |
CAT |
