Earth’s CO2 Level Rose Every Year Since Climate Change Became a National Issue

August 9, 2022

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2008
> Carbon dioxide (CO2): 384.98 ppm
> Methane (CH4): 1,789.94 ppm
> Nitrous oxide (N2O): 322.11 ppm

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2009
> Carbon dioxide (CO2): 386.42 ppm
> Methane (CH4): 1,793.63 ppm
> Nitrous oxide (N2O): 322.88 ppm

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2010
> Carbon dioxide (CO2): 388.71 ppm
> Methane (CH4): 1,796.84 ppm
> Nitrous oxide (N2O): 323.70 ppm

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2011
> Carbon dioxide (CO2): 390.57 ppm
> Methane (CH4): 1,803.42 ppm
> Nitrous oxide (N2O): 324.61 ppm

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2012
> Carbon dioxide (CO2): 392.64 ppm
> Methane (CH4): 1,810.33 ppm
> Nitrous oxide (N2O): 325.58 ppm