| Main Title |
Users' Manual for the APRAC-2 Emissions and Diffusion Model. |
| CORP Author |
Stanford Research Inst., Menlo Park, Calif.;Environmental Protection Agency, San Francisco, Calif. Region IX. |
| Publisher |
United States Environmental Protection Agency, Region IX, |
| Year Published |
1977 |
| Report Number |
EPA-68-01-3807; EPA 909-B-77-001 |
| Stock Number |
PB-275 459 |
| OCLC Number |
1053848161 |
| Subjects |
Computer science ;
Waste gases ;
Mathematical models ;
United States
|
| Additional Subjects |
Computer programs ;
Mathematical models ;
Air pollution ;
Exhaust emissions ;
Atmospheric diffusion ;
Concentration(Composition) ;
Computerized simulation ;
Programming manuals ;
Hydrocarbons ;
Carbon monoxide ;
Nitrogen oxides ;
Emission factors ;
APRAC2 computer program
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ELBD ARCHIVE |
EPA-68-01-3807. |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD ARCHIVE |
EPA 909-B-77-001 |
|
AWBERC Library/Cincinnati,OH |
07/22/2021 |
| NTIS |
PB-275 459 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
256 pages Illustrations, charts, tables ; 28 cm. |
| Abstract |
The computer program for a completely revised version of the APRAC-1A diffusion model is presented and discussed. The new code uses EPA's emissions calculation methodology from Supplement No. 5 to AP-42. Gridded, and link by link emissions can be output for hydrocarbons, carbon monoxide or oxides of nitrogen. Diffusion calculations make use of a receptor-oriented Gaussian plume model. Local winds at the receptor can be used; they are interpolated from multiple wind inputs. Mixing heights may be calculated from sounding data, or input directly. Two local source models are available, one treating pollutant behavior in a street canyon, the other treats vehicle and pollutant effects at a signalized intersection. A small program is included for decoding Federal Highway Administration data tapes. |
| Notes |
"June 1977." "EPA-68-01-3807." "Contract No. 68-01-3807." Includes bibliographical references (pages 255-256). |
| Contents Notes |
The computer program for a completely revised version of the APRAC-1A diffusion model is presented and discussed. The new code uses EPA's emissions calculation methodology from Supplement No. 5 to AP-42. Gridded, and link by link emissions can be output for hydrocarbons, carbon monoxide or oxides of nitrogen. Diffusion calculations make use of a receptor-oriented Gaussian plume model. Local winds at the receptor can be used; they are interpolated from multiple wind inputs. Mixing heights may be calculated from sounding data, or input directly. Two local source models are available, one treating pollutant behavior in a street canyon, the other treats vehicle and pollutant effects at a signalized intersection. A small program is included for decoding Federal Highway Administration data tapes. |
| Place Published |
San Francisco, CA |
| Supplementary Notes |
See also PB-213 091. |
| Corporate Au Added Ent |
Stanford Research Institute.; United States. Environmental Protection Agency. Region IX. |
| PUB Date Free Form |
1977 |
| BIB Level |
m |
| Medium |
unmediated |
| Content |
text |
| Carrier |
volume |
| Cataloging Source |
RDA |
| OCLC Time Stamp |
20210713044254 |
| Language |
eng |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
02363cam 2200433Ii 45010 |
