[jwalsh07]

Thanks, I got it now. I was missing the IR crossover.

[ancient_geezer]

I've been doing some spreadsheet work as an extension of the measures done by Jack Barrett in his paper on greenhouse molecules:

PDF-> Greenhouse molecules, their spectra and function in the atmosphere

using the HITRAN calculator and other tools over on the GATS websites: http://www.gats-inc.com/spectral_browser/spectral_browser.php

I've been collecting integrations for CO2 & H20 concentrations ranging from 10->10,000ppmv for various standardized scenarios in order to test the log relationship of forcing as well as Barrett's results and extend on them somewhat as inspiration grabs me building the spreadsheet and implementing the numerical analysis involved.

It's getting to be a rather fascinating investigation, to say the least.