
Image caption
Weekly average concentration of carbon dioxide at Mauna Loa between 2010 and early 2014. Graph by NOAA Climate.gov, based on data provided by NOAA ESRL. Mauna Loa photo by Mary Miller, Exploratorium.
Weekly average concentration of carbon dioxide at Mauna Loa between 2010 and early 2014. Graph by NOAA Climate.gov, based on data provided by NOAA ESRL. Mauna Loa photo by Mary Miller, Exploratorium.