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

August 9, 2022

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1998
> Carbon dioxide (CO2): 365.69 ppm
> Methane (CH4): 1,762.43 ppm
> Nitrous oxide (N2O): 314.20 ppm

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1999
> Carbon dioxide (CO2): 367.81 ppm
> Methane (CH4): 1,772.33 ppm
> Nitrous oxide (N2O): 315.15 ppm

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2000
> Carbon dioxide (CO2): 368.92 ppm
> Methane (CH4): 1,774.07 ppm
> Nitrous oxide (N2O): 316.14 ppm

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2001
> Carbon dioxide (CO2): 370.38 ppm
> Methane (CH4): 1,772.95 ppm
> Nitrous oxide (N2O): 316.89 ppm

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2002
> Carbon dioxide (CO2): 372.49 ppm
> Methane (CH4): 1,773.14 ppm
> Nitrous oxide (N2O): 317.47 ppm