The debates get complicated but if you take the simplest model that the atmosphere absorbs more reflected sun due to the increased CO2, not worrying about all t

The debates get complicated but if you take the simplest model that the atmosphere absorbs more reflected sun due to the increased CO2, not worrying about all the other factors, and run the numbers the predicted warming matches the observed warming pretty well. I think all the stuff in the above sentence is objectively true and observable.