Originally Posted by
Ian W
There are no observations in the real atmosphere that show that CO2 has any impact on atmospheric temperature. The adiabatic lapse rates are not affected by CO2 and these are repeatedly confirmed by balloon sondes..
How could CO2 concentrations possibly affect adiabatic lapse rates, which are caused by expansion due to reduced pressure with altitude? It seems you are muddling adiabatic lapse rates with environmental lapse rates, which are indeed affected by a whole host of factors.