[Geee]

Methane is broken down with a few years delay, but still the same amount is breaking down as is produced. Think of a long pipe which takes a few years to travel through and it's fed at a constant rate. Total methane in the atmosphere stays constant.

[Timon3]

But that still means you have a couple of years with a higher concentration of methane, and given the higher impact this is obviously very relevant, no?