I have to add this, else a lot of people that make their living in a non related Profession will under estimate this Reflection component.
At the total reflection angle a surface regardless if pitch black or snow white will reflect 100 % of all the sun light.
That in no way means, that if that angle is different that now 100% of the sun`s radiation is absorbed!
The reflected radiation component starts from 0,_1%,_....till at the total R...angle it is 100%.
Now consider the date of the year and the time of day the sun is "seen" at these elevation angles from a huge area like Canada or Russia...especially the northern tundra and the HUGE arctic!
Sorry I should have mentioned that in the above post, it only occurred to me just now, that not everybody studied physics and would have taken that for granted.
Before I registered here I read what some of You guys wrote here and laughed my head off when I seen Your flat earth jokes about climatology...because sadly enough You guys were 100% right with EVERY joke You had cracked here in this forum!...so I thought I`ll register and join the fun
Climatology treats the sun aspect angle and the physics associated with it in the spectral absorption energy region etc..exactly as they would be if the solar radiation hits a flat disc-circle instead of a hemisphere:
Also the facts I just quoted out of my physics books do not change, regardless if I am a conservative, or a communist, or a Nazi, or hate fags...these laws remain as they are, without regard to the character of the person that quoted them!
Thanks for that PB. You've actually made me want to dig out my old CRC. I also have a couple of upper atmosphere physics books I need to dig out because i am sure they are nowhere on the web.