BTW, anyone else is also welcome to answer that question.
bonus marks for
a. description of the largest fraction of radiation that leaves the surface and escapes
b. rough estimate of what is left over
(edit for clarity, we are talking about IR formed by the surface not reflected solar shortwave)
The magnetic field of the planet has more control over climate than CO2..
that could very well be true but we are looking at reasons for warming (or not warming) at the present. do you have a paper that gives evidence of changes in the magnetic field and a possible link to changes in climate?
it is all well to say things are important. eg SSDD thinks atmospheric density and pressure are important for surface temperature, and they are. but he has not shown how the pressure has changed, or linked it to the recent change in temperatures (100 years).