NASA probes the sources of the world's tiny pollutants

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This pair of images from the Ozone Monitoring Instrument (OMI) on NASAs Aura satellite shows smoke measurements over Alaska and western Canada on August 15 2005 (top) and August 21 2005 (bottom). Increasing amounts of smoke are shown as an aerosol in ...
This pair of images from the Ozone Monitoring Instrument (OMI) on NASA’s Aura satellite shows smoke measurements over Alaska and western Canada on August 15, 2005 (top) and August 21, 2005 (bottom). Increasing amounts of smoke are shown as an aerosol index with shades of blue (little or no smoke) to dull red (thick smoke). Credit: NASA/OMI Science Team

Pinpointing pollutant sources is an important part of the ongoing battle to improve air quality and to understand its impact on climate. Scientists using NASA data recently tracked the path and distribution of aerosols -- tiny particles suspended in the air -- to link their region of origin and source type with their tendencies to warm or cool the atmosphere.


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