Another is the large natural variation in TOA
net radiation out.
Back radiation reduces
net radiation out of the oceans, which means that has to be made up by the other means of energy leaving or the oceans will warm.
Not exact matches
Granted, any incremental increase in the temperature of air will cause all air molecules to radiate at a higher temperature, but by tamping down the temperature increase by spreading it
out, the
net radiation back to the surface gets diminished because radaition is propotional to the fourth power of temperature.
incoming
radiation minus the amount reflected by clouds and the surface, is essentially balanced
out by
net outgoing
radiation
The
net effect of an atmosphere comprised entirely of GHGs is that
radiation should be flowing in and
out nearly as fast as on a planet that has no atmosphere at all.
Thus Boltzmann's law can give you a good answer as to the outward
radiation in the lower atmosphere but perhaps
radiation is not the dominate cause of the
net energy flow
out of the lower atmosphere.
If CO2 and H2O molecules now are cooled below the previous equilibrium point by having their
radiation allowed to escape to outer space, then I believe these molecules must then tend to absorb more energy than yield energy with each interaction with the other components of the atmosphere until that atmosphere as a whole reaches a new thermal equilibrium where the
net radiation going
out and the
net radiation coming in (primarily from the sun and the surrounding atmosphere) is the same.
q = (ε σ Th ^ 4 A)--(ε σ Tc ^ 4 A) or in words (
net energy flow from
radiation) = («
out radiation» energy from the object)--(«back
radiation» energy to the object)
Is this due to
net out from the surface of the absorbed back
radiation or are there other effects??