However, a gap remains in terms of explaining the actual physical mechanisms. Yes, these sites give good explanations of the basic physics of radiative transfer and the Earth’s radiative energy balance, and provide empirical evidence for the existence of the greenhouse effect. But a good mechanistic explanation of the physical processes occurring seems absent, including an explanation of how local thermodynamic equilibrium is established in response to the absorption of infrared radiation by a small number of molecules. I don’t have a full understanding of what the actual issues are with the greenhouse effect skeptics (I suspect that
Roy Spencer is painfully aware), but I have just received a copy of Slaying the Greenhouse Dragon, which I will read this weekend.
I don’t think the issue of not or mis- understanding the greenhouse effect is salient just for the public and a few seemingly confused scientists. I have to wonder how many scientists on the
PNAS list that supports the consensus (including the biologists and economics) actually have a good understanding of the physical processes and have taken a graduate course in atmospheric radiative transfer.
We need to raise the level of our game in terms of explaining the planetary warming by infrared absorption of CO2 etc. The missing area of understanding seems to be the actual physical mechanism. Lets target an explanation at an audience that has taken 1 year each of undergraduate physics and chemistry, plus calculus. Once we have something that is convincing at this level, we can work on how to communicate this to the interested public (i.e. those that hang out in the climate blogosphere).
Willis Eschenbach’s help is needed in translating this for the WUWT crowd.
Thoughts on how to approach this? An excellent start was made on this
thread.See Chris Colose’s take
here, which explains it in a way that I haven’t seen before.
http://judithcurry.com/2010/11/30/physics-of-the-atmospheric-greenhouse-effect/