Actually, no, that's not certain - it's maybe the way to bet, but there are complications. Greater fire frequency and reduced root sequestration, in the vegetative growth, greater release of CO2 into the air from some aspects of the chemical weathering and water solution, etc. Better to be clear. At equilibrium the energy out balances the energy in, the solar flux, which is not "warming". It will be about what it was in 1850. The CO2 is currently cutting the outflow, insulating the lower atmosphere from space, and the atmosphere will warm until the extra outflow pressure overcomes the insulating CO2, the extra water vapor, the methane, maybe some nighttime clouds, etc, and restores the loss to match the gain. It's just a little different mental take than a warming atmosphere radiating more heat than before.