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ICYMI - the latest monthly observations of carbon dioxide (CO₂) and methane (CH₄)... 
For more data/info: https://gml.noaa.gov/ccgg/trends/
@ZLabe is the sharp uptick in methane after a period or relative decline a consequence of melting clathrates, or of increasing fossil fuel consumption?
@simon_brooke Scientists are still trying to pinpoint the cause of recent changes in methane concentration trends (e.g., wetlands). Here are some articles exploring possible sources/sinks: https://phys.org/news/2019-03-methane-atmosphere-surging-scientists.html & https://e360.yale.edu/features/methane_riddle_what_is_causing_the_rise_in_emissions & https://nature.com/articles/d41586-022-00312-2 & https://earthobservatory.nasa.gov/images/150967/why-methane-surged-in-2020
@ZLabe @simon_brooke locally the builr their downtown in a leveed RIVERBED. When it dries in the summer you can smell swamp gas, methane, in a number of places. That's why. Wetlands are SUPPOSED TO generate methane and the FACTORS are only relevant becase STUPID HUMANS live near them. Greedy 'scientists' with Grant Money pay their bills doing MEANINGLESS RESEARCH. Go away and LEAVE THE WETLANDS to be what they are.