You are here:
MIDWEST INTERSTATE SULFUR TRANSFORMATION AND TRANSPORT PROJECT: AERIAL MEASUREMENTS OF URBAN AND POWER PLANT PLUMES, SUMMER 1974
Citation:
White, W., J. Anderson, W. Knuth, D. Blumenthal, AND R. Husar. MIDWEST INTERSTATE SULFUR TRANSFORMATION AND TRANSPORT PROJECT: AERIAL MEASUREMENTS OF URBAN AND POWER PLANT PLUMES, SUMMER 1974. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/3-76/110.
Description:
A portion of the research activities of the Midwest Interstate Sulfur Transformation and Transport Project (Project MISTT) during the summer of 1974 is documented. Using a light plane equipped with instruments for measuring air pollutants and meteorological parameters, investigators mapped the three-dimensional distribution of aerosols and pollutant gases originating in the St. Louis area. Each day's flight plan was designed to characterize a large pollutant plume at discrete distances downwind from its source. The plume from the coal-fired power plant at Labadie, Missouri was followed out to 45 km. Secondary aerosol production within the plume was documented. The estimated average conversion rate for sulfur dioxide to sulfate was about three percent/hour at the distances sampled. The overall removal rate of SO2 was too small to detect, and no net production of ozone was observed. Large pollutant plumes were also identified downwind of central St. Louis and the Wood River refineries. These urban-industrial plumes were followed out to 60-70 km, where they were characterized by elevated concentrations of ozone and light-scattering aerosols.