Main Title |
Improvements to single-source model / |
Author |
Mills, Michael T.
|
Other Authors |
|
CORP Author |
GCA Corp., Bedford, Mass. GCA Technology Div.;Environmental Protection Agency, Research Triangle Park, N.C. Office of Air Quality Planning and Standards. |
Publisher |
Environmental Protection Agency, Office of Air and Waste Management, Office of Air Quality Planning and Standards ; For sale by the National Technical Information Service, |
Year Published |
1977 |
Report Number |
EPA-450/3-77-003a; EPA-450/3-77-003b; EPA-450/3-77-003c; GCA-TR-76-6-G(3); EPA-68-02-1376 |
Stock Number |
PB-274 527 |
OCLC Number |
02989142 |
ISBN |
pbk. |
Subjects |
Sulfur dioxide ;
Air quality monitoring stations ;
Sulphur dioxide
|
Additional Subjects |
Mathematical models ;
Sulfur dioxide ;
Air pollution ;
Concentration(Composition) ;
Sites ;
Performance evaluation ;
Electric power plants ;
Graphic methods ;
Monitoring ;
Trends ;
Atmospheric diffusion ;
Industrial wastes ;
Combustion products ;
Wind velocity ;
Fossil fuel power plants ;
Air pollution sampling ;
Single source models ;
Point sources
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EKBD |
EPA-450/3-77-003a |
v.1 |
Research Triangle Park Library/RTP, NC |
09/10/1999 |
EKBD |
EPA-450/3-77-003b |
v.2 |
Research Triangle Park Library/RTP, NC |
09/10/1999 |
EKBD |
EPA-450/3-77-003c |
v.3 |
Research Triangle Park Library/RTP, NC |
09/10/1999 |
ELBD ARCHIVE |
EPA 450-3-77-003a |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD ARCHIVE |
EPA 450-3-77-003b |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD ARCHIVE |
EPA 450-3-77-003c |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ESAD |
EPA 450-3-77-003A |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
ESAD |
EPA 450-3-77-003B |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
ESAD |
EPA 450-3-77-003C |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB-274 527 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
viii, 47 p. : ill., graphs, map ; 28 cm. |
Abstract |
This report documents an evaluation of the model performance stratified by six stability classes, three wind speed classes, and three mixing height classes. The model accuracy is found to be dependent on stability class. For stabilities A and B, the model shows some tendency to overestimate concentrations, especially near the plant. For stabilities D, E, and F, the model greatly underestimates concentrations at all but the most distant sampler. For stability C, the model tends to agree with the measurements. Higher wind speeds result in a trend toward overestimates at the Muskingum plant, and a trend toward underestimates at the Canal plant. For the Canal plant, there does not appear to be a definite pattern between the accuracy of the model estimates and mixing height. However, at the Muskingum plant, large underestimates occur for the lowest mixing height class. This implies that the model is treating the plume as penetrating the top of the mixed layer (with resulting concentration estimates of zero) more frequently than actually happens. |
Notes |
Prepared by GCA Corporation, GCA Technology Division, Bedford, Mass., under contract no. 68-02-1376, task order 23. Includes bibliographical references (p. 47). |
Contents Notes |
v. 1. Time-concentration relationships. -- v. 2. Testing and evaluation of model improvements. -- v. 3. Further analysis of modeling results. |