Researchers are using NASA's Terra Earth-observing satellite to track the spread of air pollution around the world, narrowing in on types of pollution by season to learn how better to control it. The Measurements of Pollution in the Troposphere (Mopitt) instrument maps carbon monoxide, shown for the winter average in 2000-04 (high values in red). The spacecraft's Moderate-resolution Imaging Spectroradiometer (Modis) instrument records aerosol data. Russian wildfires in 2002 and 2003 raised ...


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