Posted without comment. (Click the image to go to xkcd.)
Duh, and how do you get ice sheets such as this ?
Well it is called evaporation at the equatorial regions from extreme heat.
This same evaporation forms low pressure cells which migrate north , gradually cooling down and end up offloading all that condensation in northern latitudes.
Simple thermodynamics and weather….
All that extreme buidup of ice comes from precipitation in the form of snow.
You don’t get this without first evaporating the water ! Cold don’t do this, only heat…
Ain’t science neat ?
I guess you’ve never saw laundry getting dry at -30 degree…
As a matter of fact yes I have…How that applies in this case is beyond me though.
Simply was trying to explain in simple terms as to how all that Ice gets there to start with. It does not just magically appear ya know. It has to come from evaporation at lower latitudes to start with to form the low pressure areas which migrate north and dump.
I saw a post recently (can’t find the source) that breathlessly claimed that if you’re 21 you haven’t lived a single month in lower than average temperatures. Duh. On average, Earth is an icebox. Hurray for the Holocene!
More importantly, who knows what the exact temperature of the Earth should be? There’s millions of years of evolution on this planet to show that life can exist in a wide range of atmospheric and temperature conditions. It’s sort of self-aggrandizing to think that the conditions that are incompatible with the dinosaurs, mammoths, and such, yet are quite comfortable for homo sapiens, are the only ones the planet should have.
The temperature it was when the Baby Boomers were in elementary school. Duh.
How about Washington DC? Somehow I can really imagine that place buried in ice, but it’s probably too far south.
Washington D.C. is already buried in something and it’s not ice.
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