Methane Update

Remember methane?

It has 22 times the warming potential of carbon dioxide, though it resides in the atmosphere for much less time.

Anyway, its atmospheric level went mysteriously flat over much of the '00s. But it's back on the increase -- here is NOAA's latest data:

(The gray values are preliminary....) Nevertheless, this doesn't bode well (especially if it's a result of Arctic tundra melting....), and it's never good when scientists don't quite have a handle on what's going....