EMH
Diamond Member
- Apr 5, 2021
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- #3,821
Bingo. You finally got it right. Heat escapes into space by outgoing radiation.
However heat escapes both day and night with nighttime radiation only slightly less than daytime.
We have measured how much incoming radiation is absorbed in the ground from the sun - day and night, (taking into account cloud cover, and reflection.)
We know the average temperature of the earth, roughly 15°C.
From the Stephan-Boltzmann law we know how much outgoing radiation the surface of the earth emits back to space.
We find that the outgoing radiation at the surface is so high that the sun wouldn't be able to keep up with it and the earth would drop to -20°C and the oceans would freeze.
However if the earth's outgoing radiation is from the colder top of the troposphere, it will be about the same as the sun's incoming radiation and the earth will be, on average, in equilibrium.
Do you agree with this science. Note that this is just very simple science that all legitimate scientists believe even if they are GW deniers. I have said nothing about green house gasses.
There is zero evidence that any of that has changed for billions of years.
Let's try something that DOES CHANGE...
In fact, Antarctica is much colder than the Arctic, - Google. I've seen 48F and 60F as the average difference, so let's settle for 50F. Air that passes over Antarctica cools 50F more than air that passes over Arctic. Air that passes over large ice age glacier LOSES HEAT as it does so.
So the AMOUNT OF ICE on a given polar circle directly cools both air and water, significantly. Hence it is ICE that is the key variable, and the amount of ice is 100% correlated with LAND NEAR THE POLES
Antarctica 90%
Greenland 7%
Ellesmere 0.3%
If Earth had two polar oceans, it would have no ice, and that by itself would greatly increase air and water temperature, since the 9 million cubic miles of ice on Earth today would no longer be there to cool both.