z wrote:
On Oct 31, 2:20 pm, AR-
wrote:


You may be right, but that seems rather unnecessary. It surely cannot be
that difficult to set up a simple laboratory experiment, even one that's
portable, which shows the differential ability of some gasses to absorb
radiation.



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once more, I point folks to the D-Tek, a commerical device for
measuring CO2 content in an air sample by the drop in temperature of a
target irradiated with IR through the sample, and the reduction of the
irradiation of the target due to absorbtion of the IR by the CO2.
http://www.inficon.com/download/en/D-TEK_CO2.pdf

Thanks for that. While I think I understand the basic mechanism, the key
piece I'm still missing is why the CO2 should result in surface warming
rather than simply warming the atmosphere, in particular the upper
atmosphere.

T.