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https://en.wikipedia.org/wiki/Atmospheric_methane https://en.wikipedia.org/wiki/Atmospheric_methane Methane is a strong GHG with a global warming potential 84
by avmich 3y ago
https://en.wikipedia.org/wiki/Atmospheric_methane https://en.wikipedia.org/wiki/Atmospheric_methane
Methane is a strong GHG with a global warming potential 84 times greater than CO2 in a 20-year time frame. Methane is not as persistent a gas and tails off to about 28 times greater than CO2 for a 100-year time frame.
So, methane is shorter-lived in the atmosphere than CO2. We need good numbers, of course, to have a good decision.
- chimeracoder 3y ago> Methane is a strong GHG with a global warming potential 84 times greater than CO2 in a 20-year time frame. Methane is not as persistent a gas and tails off to about 28 times greater than CO2 for a 100-year time frame. That was already discussed in the article I linked. A 100-year timeframe is not relevant for either the 2005-present timeframe or the 2050 goal, which are the benchmarks being discussed.
- avmich 3y agoIt wasn't mentioned in the comment itself. And of course 100-year timeframe behavior can hint at much shorter timeframe behavior, which is quite relevant.
- mindslight 3y agoTerrible idea: grassroots movement that releases the highest short-term GWP but shortest-lived gas into the atmosphere (Hydrogen?). The idea being humanity isn't going to seriously address the topic until the pain ramps up to a certain level, and that happening from a gas that will dissipate by itself leaves us in a much better position than carbon dioxide that will have to be sequestered to remove it.