Tuesday, December 20, 2011

Methane vs CO2, which is more to be feared

A very thoughtful article from David Archer, author of one of my favorite books on impending climate change, The Long Thaw. His synopsis of methane vs CO2 is so revealing:

"CO2 is plenty to be frightened of, while methane is frosting on the cake. Imagine you are in a Toyota on the highway at 60 miles per hour approaching stopped traffic, and you find that the brake pedal is broken. This is CO2. Then you figure out that the accelerator has also jammed, so that by the time you hit the truck in front of you, you will be going 90 miles per hour instead of 60. This is methane. Is now the time to get worried? No, you should already have been worried by the broken brake pedal."

Smile if you can, or better still, read the whole article which concludes with:

"For methane to be a game-changer in the future of Earth’s climate, it would have to degas to the atmosphere catastrophically, on a time scale that is faster than the decadal lifetime of methane in the air. So far no one has seen or proposed a mechanism to make that happen."

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