The UN says that methane causes “at least a quarter of today’s global warming.”
I ran the RRTM radiative transfer model using their mid-latitude-summer model, and found that removing all CH4 from the atmosphere reduced downwelling longwave radiation at earth’s surface from 348.6012 w/m² to 348.0023 w/m². Methane is responsible for less than 0.2% of the total greenhouse effect.
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via Real Climate Science
August 3, 2023 at 10:10PM
Iowa Climate Science Education 