"well re-emitted IR from CO2 in the atmosphere does not warm the surface"
and?
I showed you downward IR from the atmosphere. You thought it was from the Sun.
I told you it wasn't and that it occurs 24 hours a day. You said that downward IR that hits the surface, magically doesn't warm the surface. Either smart photons or hotspots was your reasoning.
you claim back radiation warms the surface. I asked you for a test that proves that there is such a thing as back radiation that warms the surface. To date, you have yet to provide that. CO2 absorbs, it emits, I asked for you to show it warms its surrounding, you got nothing. No other discussion is necessary until you can present that experiment.
BTW, then you claimed that CO2 only slows the output from the surface, I asked how, and still nothing. so right now, you have yet to produce any evidence to support either of your two claims.