Start Date: End Date: Published Date Data Date
Data acquired 2005 - 2007 720 x 536 PNG
Data acquired 2005 - 2007 1332 x 888 541 KB - PNG
Data acquired 2011 - 2014 720 x 536 PNG
Data acquired 2011 - 2014 1332 x 888 586 KB - PNG
Levels of the air pollutant have dropped by about 80 percent over the eastern United States.
NASA Earth Observatory maps by Joshua Stevens and Jesse Allen, using data provided courtesy of the Aura OMI science team. OMI was developed through a partnership between NASA and the Dutch and Finnish meteorological institutes and space agencies. Caption by Adam Voiland, with information from Nickolay Krotkov.
Published December 22, 2015 Data acquired 2005 - 2014