No, you are not thinking this through. The Earth is not a static object. It has a heat source, the Sun. Adding an insulating atmosphere that impedes energy loss to space affects the equilibrium temperature at the surface.
Oh, I agree with the fact that the sun will heat the earth and that the colder vacum of space can't get in thanks to the greenhouse gases, but the earth doesn't get warmer than the heating source the sun supplies. The heat rises causing the lower level atmosphere to keep the cold from coming in. That's it. There is no evidence that it regenerates heat back to the surface. In fact, the physics shows heat will rise only, no proof it radiates back, it isn't provable. Nor has any experiment been able to recreate that action. It is but a belief.
BTW, it is why when the sun source is gone, it gets cooler on the surface, there is no longer a heating source. Therefore we need heaters in our homes.
You are confusing energy with heat. Energy flows in all directions, heat is a more complicated notion of net energy flowing from warm to cool. The atmospheric doesn't send heat to the surface (except inversions) but it is always sending energy back.
always sending energy back.
in the form of?
IR photons. Every object emits radiation according to its temperature. Whether it is in the direction of another object that is warmer, cooler or the same temperature. Basic physics. The molecules have no control over the creation or direction because it is formed by random molecular collisions.
A colder object can not warm a warmer object.. The atmosphere, being colder, cannot warm the surface.
The IR from the atmosphere does not posses the ability or mass to warm the surface, it can however slow heat release to space. The only thing our atmosphere can do is slow how fast heat travels upward and towards cooler objects.
The major problem with the warmer hypothesis is the water vapor, which is not slowed by CO2 or the atmosphere. The convection cycle has speed up in the last thirty or so years we have been watching it. One observation just recently showed the Hadley Cells have increased their cycle speeds by 1/6 causing cloud formations to increase towards the poles and at higher altitudes.
Not only has the albedo of the clouds reflected energy but the convective cycles have released more heat. This speeding up appears to be directly related to solar cycles and magnetic flux from the sun.
The last two years we have begun to see a reduction in Hadley Cell size, indicating the atmosphere is now cooling in correlation with solar output.
IR photons are not heat, CO2 does not warm at all, and only the excited particles, photons cause, create warmth. The absence of a troposphereic hot spot proves there is no heat retention in our atmosphere as defined by the CAGW hypothesis.