| Main Title |
Weekend/weekday differences in oxidants and their precursors / |
| Author |
Horie, Yuji ;
Cassmassi, Joseph ;
Lai, Larry ;
Gurtowski, Louis
|
| Other Authors |
|
| CORP Author |
Technology Service Corp., Santa Monica, CA.;Environmental Protection Agency, Research Triangle Park, NC. Monitoring and Data Analysis Div. |
| Publisher |
U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards ; National Technical Information Service [distributor], |
| Year Published |
1979 |
| Report Number |
EPA-450/4-79-013; EPA-68-02-2595; PB300479 |
| Stock Number |
PB-300 479 |
| OCLC Number |
09059198 |
| Subjects |
Oxidizing agents ;
Air--Pollution--United States ;
Atmospheric pressure--United States
|
| Additional Subjects |
Air pollution ;
Oxidizers ;
Ozone ;
Concentration(Composition) ;
Meteorology ;
Urban areas ;
Wind(Meteorology) ;
Sites ;
Nitrogen oxides ;
Atmospheric motion ;
Northeast Region(United States) ;
Air quality data
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EIAD |
EPA-450/4-79/013 |
|
Region 2 Library/New York,NY |
01/20/1995 |
| EJED |
EPA 450/4-79-013 |
|
OCSPP Chemical Library/Washington,DC |
01/11/2002 |
| EKBD |
EPA-450/4-79-013 |
|
Research Triangle Park Library/RTP, NC |
08/27/1999 |
| ELBD ARCHIVE |
EPA 450-4-79-013 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ERAD |
EPA 450/4-79-013 |
|
Region 9 Library/San Francisco,CA |
02/04/2013 |
| ESAD |
EPA 450-4-79-013 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-300 479 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
viii, 140 pages : illustrations, 1 map ; 28 cm |
| Abstract |
Differences between weekend and weekday oxidant and oxidant precursor concentrations in the Northeastern United States are examined. Statistical tests are employed to assess whether any differences in daily maximum oxidant concentrations are significant. Weekend/weekday differences in meteorology are also examined for any potential impact on weekend/weekday differences in oxidants. Oxidant concentrations are adjusted in an attempt to account for variations in meteorology, and weekend/weekday differences in the adjusted values are examined. Finally, statistical tests are used to determine significant differences in early morning oxidant precursor concentrations. The analyses revealed that oxidant concentrations downwind of major urban areas tend to be lower on weekends. However, the reductions are not as large as those observed in precursor concentrations within the major urban areas. Reductions in weekend oxidant concentrations at locations within the major urban areas are not as great as those at downwind locations. |
| Notes |
"Technology Service Corporation." "March 1979." Includes bibliographical references (pages 110-111). "EPA-450/4-79-013." "Contract no. 68-02-2595." |
