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Understanding Smog by Measuring Light Absorption

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Haze lingering over cities may look fairly similar from place to place, but its composition can vary greatly. In some regions, industrial coal smoke predominates, whereas in others, automotive exhaust makes significant contributions. Researchers from Paul Scherrer Institut in Villigen and from the University of Bern, both in Switzerland, used aerosol light absorption to elucidate regional variations in sources of smog. A photograph of the Alpine city of Roveredo, Switzerland, shows low-lying smog cover. Courtesy of André S.H. Prévôt, Paul Scherrer Institut. The scientists conducted...Read full article

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    Published: June 2008
    EuropeEUROResearchindustrialindustrial coal smoke predominateslight absorptionResearch & Technologysmogspectroscopy

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