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Global Annual Mean CO<sub>2</sub> Levels in Atmosphere (1979-2023)

Global Annual Mean CO2 Levels in Atmosphere (1979-2023)

Source: NOAA/GML

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Definition: This chart visually represents the atmospheric concentration of carbon dioxide (CO2) over time, illustrating the trend of CO2 levels measured in parts per million (ppm) from 1979 to 2023.