Start Date: End Date: Published Date Data Date
Data acquired 2000 720 x 335 JPEG
Data acquired 2000 1440 x 720 795 KB - JPEG
Data acquired 2014 720 x 335 JPEG
Data acquired 2014 1440 x 720 636 KB - JPEG
Data acquired March 2000 - March 2014 720 x 290 PNG
Concentrations of the gas, which is produced by burning carbon-based fuels, have decreased since 2000.
NASA Earth Observatory images by Jesse Allen and Joshua Stevens, using data from the National Center for Atmospheric Research (NCAR) and the University of Toronto MOPITT Teams. Caption by Adam Voiland, with input from Helen Worden (UCAR), Merritt Deeter (NCAR), and Benjamin Laken.
Published June 2, 2015 Data acquired 2000 - 2014