Weiss RE, Waggoner AP, Charlson RJ, Ahlquist NC. Sulfate Aerosol: Its Geographical Extent in the Midwestern and Southern United States.
Science 1977;
195:979-81. [PMID:
17735672 DOI:
10.1126/science.195.4282.979]
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Abstract
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.
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