Main Title |
Ozone over San Francisco : means and patterns during pollution episodes / |
Author |
MacKay, Kenneth P.
|
Publisher |
Dept. of Meteorology, San Jose State University, |
Year Published |
1977 |
Report Number |
EPA-600-4-74-046; EPA-R-802235; EPA/600/4-77/046 |
Stock Number |
PB-274 452 |
OCLC Number |
46853030 |
Subjects |
Atmospheric ozone--California--San Francisco ;
Air--Pollution--California--San Francisco
|
Additional Subjects |
Ozone ;
Air pollution ;
Meteorological data ;
Concentration(Composition) ;
California ;
Atmospheric motion ;
Measuring instruments ;
Monitoring ;
Data analysis ;
San Francisco(California)
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 600-4-77-046 |
c.1 |
Headquarters Library/Washington,DC |
04/21/2014 |
EKBD |
EPA-600/4-77-046 |
|
Research Triangle Park Library/RTP, NC |
08/01/2003 |
ELBD ARCHIVE |
EPA 600-4-77-046 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ERAD |
EPA 600/4-77-046 |
2 copies |
Region 9 Library/San Francisco,CA |
10/24/2012 |
ESAD |
EPA 600-4-77-046 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB-274 452 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
xiv, 108 p. : ill., maps ; 28 cm. |
Abstract |
Measurements of meteorological parameters were taken at six levels and ozone at four levels between 260m and 473m ASL on the Mt. Sutro T.V. Tower in San Francisco during the summers of 1974 through 1976. Hourly average ozone concentrations within the elevated inversion layer at this location exceeded the 8 pphm (160 microgram/cu m) National Ambient Air Quality Standards about 15% of the time. High inversion layer ozone concentrations at this site were associated with high surface concentrations occurring during area-wide air pollution episodes. These episodes occurred when a lobe of the Pacific high pressure system penetrated inland. During these episodes, superposition of synoptic scale northeasterly flow and locally produced mesoscale flow caused easterly or light westerly flows during the late forenoon within the inversion layer and westerly flow in the late afternoon. Inland, where the inversion was destroyed from below, inversion layer and surface generated pollutants were convectively mixed. This mixing and the wind oscillation recycled pollutants. The episodes ended when the synoptic situation reverted to one more normal for the season and pollutants were advected from the area. |
Notes |
Cover title. "August 1977." Includes bibliographical references (p. 106-107.). |