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ArticlesCopyright © 1976 by American Association for the Advancement of Science
Formation and transport of secondary air pollutants: ozone and aerosols in the St. Louis urban plume
Emissions from metropolitan St. Louis caused reduced visibilities and concentrations of ozone in excess of the federal ambient standard (0.08 part per million) 160 kilometers or more downwind of the city on 18 July 1975. Atmospheric production of ozone and visibility-reducing aerosols continues long after their primary precursors have been diluted to low concentrations.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)