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WMO Greenhouse Gas Bulletin
November 2 , 2024
55 days
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- Greenhouse gas levels surged to a new record in 2023, rising by more than 10% in just two decades.
- The globally averaged surface concentration of carbon dioxide reached 420 parts per million (ppm).
- Methane reached1934 parts per billion and nitrous oxide 336.9 parts per billion (ppb) in 2023.
- These values are 151%, 265% and 125% of pre-industrial (before 1750) levels.
- The 2023 increase of CO2 in the atmosphere was higher than that of 2022.
- The annual increase of 2.3 ppm marked the 12th consecutive year with an increase greater than 2 ppm.
- In the last 20 years, the CO2 level has increased by 11.4% (42.9 ppm) above the level of 377.1 ppm recorded in 2004.
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