Atmospheric Carbon Dioxide Increase
Atmospheric carbon dioxide (CO2) has been measured since 1957 at the Mauna Loa Observatory in Hawaii, which is operated by the National Oceanic and Atmospheric Administration (NOAA). By December 2021, the amount of CO₂ in the atmosphere had increased by 50% compared to before the Industrial Revolution. Since then, atmospheric CO2 has continued to increase. Credit: NASA
December 14, 2023
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Timeplot of increase of atmospheric carbon dioxide (CO₂) concentrations relative to the pre-industrial CO₂ long-term mean value of 278 ppm. During 2021, atmospheric CO₂ concentrations reached a record-level increase of 50% relative to pre-industrial CO₂ levels. Credit: NASA