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Science 11 March 1977:
Vol. 195. no. 4282, pp. 979 - 981
DOI: 10.1126/science.195.4282.979
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Articles

Sulfate Aerosol: Its Geographical Extent in the Midwestern and Southern United States

R. E. WEISS 1, A. P. WAGGONER 1, R. J. CHARLSON 1, and N. C. AHLQUIST 1

1 Water and Air Resources Division, Department of Civil Engineering, and Institute for Environmental Studies, University of Washington, Seattle 98195

Sulfate particles (sulfuric acid and its neutralization products with ammonia) dominate the submicrometer-sized, light-scattering component of the aerosol in more than 90 percent of 2850 pairs of humidographic measurements made over a 3-month period at three rural midwestern and southern sites. The nearly continuous optical dominance by sulfate in the aerosol at these spatially varied locations, particularly in the Ozark Mountains, suggests that sulfate is a component of the submicrometer-sized aerosol that is distributed over a large geographical region and is not due to local sources.

Submitted on April 5, 1976
Revised on September 24, 1976


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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