| Main Title |
CDM 2.0 : climatological dispersion model, user's guide / |
| Author |
Irwin, John S. (John Shearer, ;
Chico, T. ;
Catalano, J.
|
| Other Authors |
|
| CORP Author |
Aerocomp, Inc., Costa Mesa, CA.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| Publisher |
U.S. Environmental Protection Agency, Atmospheric Sciences Research Laboratory, |
| Year Published |
1985 |
| Report Number |
EPA 600/8-85/029; EPA-68-02-3750 |
| Stock Number |
PB86-136 546 National Technical Information Service |
| OCLC Number |
39983565 |
| Subjects |
Air--Pollution--Mathematical models ;
Atmospheric diffusion--Mathematical models
|
| Additional Subjects |
Air pollution ;
Forecasting ;
Plumes ;
Sources ;
Concentration(Composition) ;
Wind(Meteorology) ;
Transport properties ;
Sites ;
Mathematical models ;
Climatological dispersion model ;
Atmospheric dispersion ;
User manuals(Computer programs) ;
Air pollution sampling ;
Point areas ;
Gaussian plume models
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ELBD ARCHIVE |
EPA 600-8-85-029 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD ARCHIVE |
EPA 600-8-85-029 |
|
AWBERC Library/Cincinnati,OH |
10/15/2021 |
| ESAD |
EPA 600-8-85-029 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB86-136546 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
xiii, [137] pages : illustrations ; 28 cm |
| Abstract |
CDM-2.0 (Climatological Dispersion Model - Version 2.0) determines longterm (seasonal or annual) quasi-stable pollutant concentrations in rural or urban settings using average emission rates from point and area sources and a joint frequency distribution of wind direction, wind speed, and stability. The Gaussian plume hypothesis forms the basis for the calculations. Contributions are calculated assuming the narrow plume hypothesis, Calder (1971, 1977), and involve an upwind integration over the area sources. Computations can be made for up to 200 point sources and 2500 area sources at an unlimited number of receptor locations. The number of point and area sources can be easily modified within the code. CDM-2.0 is an enhanced version of CDM including the following options: 16 or 36 wind-direction sectors, initial plume dispersion, buoyancy-induced dispersion, stack-tip downwash, and gradual (transitional) plume rise. The user has a choice of seven dispersion parameter schemes. Optional output includes point and area concentration roses and histograms of pollutant concentration by stability class. |
| Notes |
"EPA/600/8-85-029." Cover title. EPA contract no. 68-02-3750; EPA project officer: D. Bruce Turner. "NTIS PB86-136546." Includes bibliographical references (pages 94-97). |
