Slaying the Sky Dragon: Death of the Greenhouse Gas Theory

[Derek]

(11-29-2010 11:48 AM)Richard111 Wrote:  Check; minus 40C equals 233.15K. Put that into the formulae
E = 1.0 * sigma * T^4 (for a 'blackbody', hah!)
where sigma equals 0.000000057 (5.7e-8)
and T equals 233.15
and you get 168W/m^2.

Here is a chart showing that 168W/m^2:

http://www.globalwarmingskeptics.info/fo...ml#pid6199

If you use an average global absorbance/emissivity figure of 0.7 (i.e. a very poor 'greybody') you can get that -18C for the surface at 168W/m^2 so did Kiehl-Trenberth do something like that? Thats a very low figure, 0.7, more usually around 0.9. This of course means that any 'greenhouse' effect must be that much stronger to push the temperature up by 33 degrees. Ah, well, more puzzles to figure out.

Richard111 - Is this the light / dark "mother of all averages" problem of "black body" calculations Alan Siddons explains very early in the book, which results in a 68% error. ?
ie, Discs, hemispheres, average and max temps, and 35 K (surface heat retention / release) on the dark side of course.