 (ToA). Doubling the bulk of the atmosphere (even ussing non-GHGs like N0) will raise the GHG molecules as well, so they will be radiating to space from a higher altitude. But since higher altitudes tend to be cooler due to the lapse rate, the GHGs at the new, higher, cooler ToA will radiate LESS to space. This will create a back up of energy all the way down to the surface. Ultimately, the surface will get warmer (and actually INCREASE the radiant energy to space through the 