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The feedbacks depend on total temperature not atmospheric gas composition, so methane raising temperatures by X degrees isn't any worse than CO2 causing the sam
by quotemstr 8y ago
The feedbacks depend on total temperature not atmospheric gas composition, so methane raising temperatures by X degrees isn't any worse than CO2 causing the same temperature rise, and methane will exit the atmosphere faster. That is, feedback is proportional to the time integral of warming, not the forcing!
- DennisP 8y agoYeah fine but total warming over the next 25 years could well be sufficient to get us over the critical threshold, and methane does have a greater impact than CO2 over a period of 25 years.