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Line graph time series of global atmospheric methane abundance for each month from 1984 to 2023. There is a long-term increasing trend in additional to a seasonal cycle and decadal variability. September 2023 methane abundance is currently 1927 ppb.

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Line graph time series of global atmospheric methane abundance for each month from 1984 to 2023. There is a long-term increasing trend in additional to a seasonal cycle and decadal variability. September 2023 methane abundance is currently 1927 ppb.
https://fediscience.org/system/media_attachments/files/111/710/420/171/883/528/original/3a1544c331d35cf1.png

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Zack Labe (zlabe@fediscience.org)'s status on Sunday, 07-Jan-2024 03:33:15 JST Zack Labe

🚨 Methane (CH₄; potent greenhouse gas) reached a preliminary new record high value in September 2023 (1927.4 ppb).
September 2022's global methane abundance was 1915.4 ppb.
Note there is a seasonal cycle. Data available from https://esrl.noaa.gov/gmd/ccgg/trends_ch4/

In conversation about 11 months ago from fediscience.org permalink