Main Title |
Analytical diffusion model for long distance transport of air pollutants / |
Author |
Fay, James A. ;
Rosenzweig, Jacob J.
|
Other Authors |
|
CORP Author |
Massachusetts Inst. of Tech., Cambridge. Fluid Mechanics Lab.;Environmental Sciences Research Lab., Research Triangle Park, NC. |
Publisher |
Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
Year Published |
1979 |
Report Number |
EPA-600/4-79-037; EPA-R-804891; PB-299 358 |
Stock Number |
PB-299 358 |
OCLC Number |
53250682 |
Subjects |
Atmospheric diffusion--Mathematical models ;
Air--Pollution--Mathematical models
|
Additional Subjects |
Air pollution ;
Mathematical models ;
Plumes ;
Sulfur dioxide ;
Sulfates ;
Diffusion coefficient ;
United States ;
Atmospheric dispersion
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJAD |
EPA 600/4-79-037 |
|
Region 3 Library/Philadelphia, PA |
01/28/2000 |
DISPERSAL |
ERAD |
EPA 600/4-79-037 |
|
Region 9 Library/San Francisco,CA |
10/29/2012 |
NTIS |
PB-299 358 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
iii, 25 pages : maps ; 28 cm. |
Abstract |
A steady-state two-dimensional diffusion model suitable for predicting ambient air pollutant concentrations averaged over a long time period (e.g., month, season, or year) and resulting from the transport of pollutants for distances greater than about 100 km from the source is described. Analytical solutions are derived for the primary pollutant emitted from a point source and for secondary pollutant formed from it. Depletion effects, whether due to wet or dry deposition or chemical conversion to another species, are accounted for in these models as first order processes. Thus, solutions for multiple point sources may be superimposed. The analytical theory for the dispersion of a primary pollutant is compared with the numerical predictions of a plume trajectory model for the case of steady emission from a point source. Good overall agreement between the two models is achieved. The theory for the dispersion of a secondary pollutant is compared with measurements of the annual average sulfate concentration in the U.S. Calculations are carried out using SO2 emissions from electric power plants in the United States as a source inventory. |
Notes |
Project Officer: Kenneth L. Demerjian. Massachusetts Institute of Technology "June 1979." "EPA-600/4-79-037." Includes bibliographical references (pages 22-24). |