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Another Olympic feat

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Anne L. Fischer, Senior Editor, [email protected]

The smog in China was such an issue before the Beijing Olympics last year that Chinese government officials placed restrictions on emissions. To determine just how much clearer the air was afterward, NASA used remote sensing instrumentation to evaluate changes in the pollutant levels. Tests showed that the concentration of nitrogen dioxide had dropped nearly 50 percent and carbon monoxide, about 20 percent. Tracking pollutants To look at sulfur dioxide (SO2) and tropospheric ozone, the researchers studied data from the Aura satellite that was taken using an ozone-monitoring instrument...Read full article

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    Published: April 2009
    carbon monoxideemissionsGreenLightremote sensing instrumentationSensors & Detectorsspectroscopy

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