Main Title |
Diurnal variations in traffic flow and carbon monoxide concentrations / |
Author |
DeMarrais, Gerard A.
|
Other Authors |
|
CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, N.C. Meteorology and Assessment Div. |
Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory, |
Year Published |
1977 |
Report Number |
EPA-600/4-77-016 |
Stock Number |
PB-266 743 |
OCLC Number |
52757954 |
Additional Subjects |
Carbon monoxide ;
Traffic surveys ;
Diurnal variations ;
Concentration(Composition) ;
Air pollution ;
Correlation ;
Wind velocity ;
Sites ;
Monitoring ;
Air pollution sampling
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 600-4-77-016 |
|
Headquarters Library/Washington,DC |
03/26/2014 |
EKBD |
EPA-600/4-77-016 |
|
Research Triangle Park Library/RTP, NC |
08/01/2003 |
ELBD ARCHIVE |
EPA 600-4-77-016 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ESAD |
EPA 600-4-77-016 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB-266 743 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
viii, 50 p. : ill. ; 28 cm. |
Abstract |
Traffic count and carbon monoxide (CO) data for January and July from three states are compared in order to reveal any diurnal variations in the two measurements. The diurnal patterns for the 18 traffic count stations indicate that there are average patterns of traffic flow that are representative of all stations for periods of one month. Comparisons of data for the 36 CO monitoring stations show correlations which vary from large positive to large negative. However, eliminating a few monitoring stations which show relatively poor correlations yields groups within each state that have consistent patterns. The diurnal variations in CO concentrations are not well correlated with traffic patterns. Part of the poor correlation appears to be due to the diurnal variations in vertical mixing and wind speeds and part to the exposures and locations of the sampling instruments. |
Notes |
"April 1977." "EPA-600/4-77-016." |