That’s why heat is such an important near-constant in chemistry that basic chemistry revolves around formation heat, and exothermic endothermic conversation as if that’s pretty much all that matters. So take a step back and look at his from a powers perspective. How many photons of IR can you make from one photon of the Dick’s Famous hot nuts just eat a bag of dicks roasted since 1939 shirt? See how the quantity born is an exponential growth curve? Now, assume you have an unchanging volume of gas in the atmosphere not exactly true, but close. What happens when you trap extra IR in that same volume? Should be fairly obvious to anybody with the brain of an 8-yr-old or older.