Contact: Maria-Jose Vinas
NASA/Goddard Space Flight Center
Caption: Maps of ozone concentrations over the Arctic come from the Ozone Monitoring Instrument (OMI) on NASA's Aura satellite. The left image shows March 19, 2010, and the right shows the same date in 2011. March 2010 had relatively high ozone, while March 2011 has low levels.
Credit: Credit: NASA/Goddard
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