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Lasers Track Air Pollution

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Kate Leggett

Chemical emissions in the Earth's atmosphere profoundly affect the weather. When dust, soot, ice or sea salt act as catalysts, atmospheric chemicals can reduce or contribute to smog, global warming and the ozone hole. Scientists studying climate changes, air pollution and other environmental problems now can use a laser-based system that provides clear information about these particles and the chemical changes they engender. Until recently, scientists had no rapid method for collecting and analyzing atmospheric samples. They typically collected air samples at altitude, then examined them...Read full article

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    Published: January 1998
    Accent on ApplicationsApplicationsBasic Sciencechemicalsspectroscopy

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