Do Global Energy budgets make sense. ???

[h-j-m]

OK Derek, I admit that I missed a lot. This is why.

Quote:When viewed from space, what is the radiative surface of earth,

Yes, what is it, what happens there, what do I have to look out for to detect it?

Quote:which is the temperature we would observe the planet to have, as an average.

Does such thing like a planetary average temperature exist? If yes, how or where to measure it?

Quote:The answer is -18 degrees Celsius,

As this number is derived applying the Stefan–Boltzmann law, what is its connection to temperatures we can measure here on earth, or any averages derived from such measurements?

Especially, most important, what is the relevance of the above for the earth's climate?

As I do not have answers for the posed questions I am unable to get the points.

By the way, I am living on welfare constituting a budget that does not allow for the purchasing of books.