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

August 9, 2022

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2003
> Carbon dioxide (CO2): 375.08 ppm
> Methane (CH4): 1,777.41 ppm
> Nitrous oxide (N2O): 318.21 ppm

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2004
> Carbon dioxide (CO2): 376.61 ppm
> Methane (CH4): 1,775.44 ppm
> Nitrous oxide (N2O): 318.93 ppm

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2005
> Carbon dioxide (CO2): 378.97 ppm
> Methane (CH4): 1,774.55 ppm
> Nitrous oxide (N2O): 319.60 ppm

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2006
> Carbon dioxide (CO2): 381.17 ppm
> Methane (CH4): 1,776.40 ppm
> Nitrous oxide (N2O): 320.37 ppm

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2007
> Carbon dioxide (CO2): 382.89 ppm
> Methane (CH4): 1,781.75 ppm
> Nitrous oxide (N2O): 321.14 ppm