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

August 9, 2022

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1993
> Carbon dioxide (CO2): 356.63 ppm
> Methane (CH4): 1,735.65 ppm
> Nitrous oxide (N2O): 310.25 ppm

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1994
> Carbon dioxide (CO2): 358.20 ppm
> Methane (CH4): 1,741.66 ppm
> Nitrous oxide (N2O): 310.98 ppm

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1995
> Carbon dioxide (CO2): 360.23 ppm
> Methane (CH4): 1,747.10 ppm
> Nitrous oxide (N2O): 311.78 ppm

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1996
> Carbon dioxide (CO2): 362.01 ppm
> Methane (CH4): 1,749.86 ppm
> Nitrous oxide (N2O): 312.81 ppm

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1997
> Carbon dioxide (CO2): 363.17 ppm
> Methane (CH4): 1,753.94 ppm
> Nitrous oxide (N2O): 313.53 ppm