| Main Title |
User's manual for chemical mass balance model / |
| Author |
Williamson, Hugh J. ;
DuBose, Dennis A.
|
| Other Authors |
|
| CORP Author |
Radian Corp., Austin, TX.;Environmental Protection Agency, Research Triangle Park, NC. Monitoring and Data Analysis Div. |
| Publisher |
U.S. Environmental Protection Agency, |
| Year Published |
1983 |
| Report Number |
EPA-450/4-83-014 |
| Stock Number |
PB83-264622 |
| OCLC Number |
23528361 |
| Subjects |
Air quality management--United States ;
Pollution--United States--Measurement ;
Pollution--Measurement
|
| Additional Subjects |
Mathematical models ;
Manuals ;
Air pollution ;
Aerosols ;
Fortran ;
Concentration(Composition) ;
Sources ;
Computer programs ;
Computer programming ;
Mass balance ;
User manuals(Computer programs)
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EKBD |
EPA-450/4-83-014 |
|
Research Triangle Park Library/RTP, NC |
08/27/1999 |
| ELBD ARCHIVE |
EPA 450/4-83-014 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ESAD |
EPA 450-4-83-014 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB83-264622 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
ix, 225 pages : illustrations ; 27 cm. |
| Abstract |
In recent years there has been increasing interest in source apportionment of ambient aerosol concentrations through chemical mass balance (CMB) analysis. This report discusses CMB analysis through weighted least squares with options to include effective variance and ridge regression features. Effective variances are refined estimates of the weights employed in weighted least squares. This report documents an interactive FORTRAN computer program which performs aerosol source apportionment through the analysis methods discussed above. The original version of the program, which performed weighted least squares with the effective variance option, was developed at the Oregon Graduate Center based on the Doctoral Dissertation of Dr. John Watson. In the current version, a ridge regression feature was added, along with various modifications intended to enhance the ease of use of the program. |
| Notes |
"Office of Air, Noise and Radiation, Monitoring and Data Analysis Division." "EPA project officer: Warren P. Freas." "July 1983." "EPA-450/4-83-014." "Contract no. 68-02-3513." |
