Record Display for the EPA National Library Catalog


Main Title Ozone Transport in the St. Louis Area.
Author Karl, Thomas R. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1977
Report Number EPA/600/J-78/057;
Stock Number PB-289 181
Additional Subjects Air pollution ; Ozone ; Urban areas ; Rural areas ; Rural urban fringe ; Metropolitan areas ; Missouri ; Anticyclones ; Concentration(Composition) ; Transport properties ; Atmospheric diffusion ; Distance ; Saint Louis(Missouri) ; Regional Air Pollution Study ; Reprints
Library Call Number Additional Info Location Last
NTIS  PB-289 181 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p
Measurements from the Regional Air Pollution Study in St. Louis and from synoptic rawinsonde stations in North America were used with annual point and area source emission data in St. Louis to establish some consequences of local and large-scale ozone transport. In rural areas outside of St. Louis, ozone concentrations exceeded the National Ambient Air Quality Standard of 80 ppb (160 micrograms/cu m) and could not be attributed to the emissions of pollutants within the metropolitan area of St. Louis. Typically, these high ozone concentrations occurred when the air flowing into St. Louis had been associated with an anticyclone during the 3 days prior to its arrival. Trajectories indicated that during these 3-day periods the air had remained within the eastern half of the United States where there are numerous high-intensity urban-industrial centers. On other days during the study analyses of the local air flow confirmed that the urban-industrial areas within the immediate vicinity of St. Louis were responsible for high ozone concentration in the city as well as in the rural areas. An analysis of the formation and movement of an 'ozone cloud' through the network of stations revealed the consequences of local ozone generation and transport.