Contact: Rob Gutro
NASA/Goddard Space Flight Center
Caption: This image from the OMI instrument on NASA's Aura satellite shows nitrogen dioxide levels from July 7 through 12, 2011 in central Africa pertaining to agricultural fires. The highest levels of NO2 appear as a dark red butterfly over the southern Democratic Republic of the Congo. The NO2 is measured by the number of molecules in a cubic centimeter.
Credit: NASA/James Acker
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Related news release: NASA's Aura satellite measures pollution 'butterfly' from fires in central Africa