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

August 9, 2022

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2013
> Carbon dioxide (CO2): 395.49 ppm
> Methane (CH4): 1,815.44 ppm
> Nitrous oxide (N2O): 326.53 ppm

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2014
> Carbon dioxide (CO2): 397.45 ppm
> Methane (CH4): 1,824.40 ppm
> Nitrous oxide (N2O): 327.61 ppm

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2015
> Carbon dioxide (CO2): 399.58 ppm
> Methane (CH4): 1,834.63 ppm
> Nitrous oxide (N2O): 328.51 ppm

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2016
> Carbon dioxide (CO2): 402.87 ppm
> Methane (CH4): 1,842.40 ppm
> Nitrous oxide (N2O): 329.33 ppm

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2017
> Carbon dioxide (CO2): 405.19 ppm
> Methane (CH4): 1,849.95 ppm
> Nitrous oxide (N2O): 330.31 ppm