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Seasonal and diurnal variability in normalized concentrations of atmospherically dispersed pollutants
Abstract We have predicted yearly, growing season, and growing season daylight normalized air concentrations () of an inert gas tracer for a point source release near Oak Ridge, Tennessee, using local meteorological data collected for the years 1967–1969. Pasquill-Gifford atmospheric stability categories were determined using the vertical temperature gradient method, and concentrations were determined assuming Gaussian plume transport of a nondepositing contaminant. A seasonal variability in the wind rose was found, and an accompanying variability in the geographical distribution of was identified. Values of typically changed by a factor of two between yearly and growing season daylight hours and for receptor points located up to km distance from the source. These results suggest that yearly average computations may in certain cases be inappropriate for determining compliance with air quality standards during the growing season or where a seasonal activity pattern exists.
Seasonal and diurnal variability in normalized concentrations of atmospherically dispersed pollutants
Abstract We have predicted yearly, growing season, and growing season daylight normalized air concentrations () of an inert gas tracer for a point source release near Oak Ridge, Tennessee, using local meteorological data collected for the years 1967–1969. Pasquill-Gifford atmospheric stability categories were determined using the vertical temperature gradient method, and concentrations were determined assuming Gaussian plume transport of a nondepositing contaminant. A seasonal variability in the wind rose was found, and an accompanying variability in the geographical distribution of was identified. Values of typically changed by a factor of two between yearly and growing season daylight hours and for receptor points located up to km distance from the source. These results suggest that yearly average computations may in certain cases be inappropriate for determining compliance with air quality standards during the growing season or where a seasonal activity pattern exists.
Seasonal and diurnal variability in normalized concentrations of atmospherically dispersed pollutants
Fields, David E. (author) / Miller, Charles W. (author) / Schwarz, Gunther (author)
Environmental International ; 14 ; 221-227
1988-05-26
7 pages
Article (Journal)
Electronic Resource
English