u/LackmustestTester

Karl Schwarzschild describes Earth's atmosphere as in an "Adiabatic Equilibrium", resp. steady state, he applies the "Radiation Equilibrium" case to Sun's atmosphere.

Maxwell, resp. Lord Kelvin calls Earth's atmosphere in "Convective Equilibrium" rather than in a true Thermal Equilibrium. That's because the atmosphere is dynamic, that's why Maxwell starts with the kinetic theory. We have rising, cooling air and elsewhere descending air that becoming warmer, that's the idea here, putting both effects into one "quasi dynamic" steady state (Fliessgleichgewicht, flow/dynamic equilibrium) model

The Radiation Equilibrium, which is the basis for the "greenhouse" theory is a simplified physical model.

The real joke is: Maxwell also clearly states that the air temperature is proportional to the pressure - we find this concept in the Standard Atmosphere Model, this model provides the temperatures of the hypothetical, isothermal layers and the lapse rate. The Radiation Equilibrium model uses this temperature framework ("Energy" moving from layer to layer), while alarmists deny the basic concept that air temperature is strictly connected to pressure. They've "stolen" anotehr model and deny its physical basis (kinetic theory, mechanical heat theory).

Venus is the prime example of what happens in an atmosphere: The pressure causes the high temperature near the ground, CO2 at 92bar is supercritical, so the "air" would warm the surface per conduction. This does not work on Earth with its transparent, turbulent atmosphere, here the air cools the surface and it's Sun that warms the surface which then warms the air.

They moved (Surprise!) the goal post, from the Convective to true Thermal Equilibrium which assumes an isothermal atmosphere in a graviational field, to further assume that GHGs are responsible for the lapse rate, enabling convection. As if a GHG-free atmosphere wouldn't convect, ridiculous. And that's settled science...