[ndt]

"Maybe you have some other postulate to offer...?"

My only postulation was that CO2 in a beaker traps heat more efficiently than air. The addition of CO2 saturated water and expanding the beaker to the size of the words oceans as the other posters did is "putting bounds" on the statement which is exactly what I said needed to be done.

[_Jim]

My only postulation was that CO2 in a beaker traps heat more efficiently than air.

It looks like a 'new' field of science has just been invented by the mind of a layman ... paraphrasing: "CO2 in a beaker traps more heat than air" ... how does that work exactly?

What factors are at work here: conduction, absorption, emittance, reflection maybe?

Are you referring to a 'standard atmosphere' for the air parcel - can a greater amount of water vapor be specified to see how that affects the 'trapping' (your word) of 'heat'?