Chris Ho-Stuart says
“I showed how it applies to a neutral atmosphere in this comment. above (Nov 29). I explained again with emphasis on the neutral dry atmosphere in this comment”
No you didn’t, as anyone who care to follow your links will find out.
Your second link was to advocate using a computer program called Modtran.
What a cop out!
The reason you cant use you slab model (for the n’th time) is the temperatures have already been fixed by the DALR formula of -g/Cp
or in more direct form -9.8K/km from the Earth surface temperature.
Cp has already included the radiative effects of CO2.
Only a total plonker would then try to add radiative slabs to alter the now known correct temperatures.
What you are good at Chris is writing endless reams of pure guff.