I think God does this just to prove to us stupid humans that we are never really going to be able to work this stuff out.
It seems that, for whatever reason, and they have not worked that bit out yet, that the hotter the sun is at the source, then the cooler the Earth is—and vice versa. See item here in the UK Telegraph if you are interested in a little more information.
The problem is that this completely wrecks all the “global warming'” models because they all assume that the hotter the sun then the hotter the Earth. But it is not so.