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Global atmospheric methane concentration

Atmospheric methane (CH₄) concentration is measured in parts per billion (ppb).

Jul 15, 1983Jul 15, 2021Sep 4, 1992Feb 25, 1998Aug 18, 2003Feb 7, 2009Jul 31, 2014Annually averagedMonthly averaged
Jul 15, 1983
Jul 15, 2021