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Originally Posted by engineerdude
...the global-warming people don't "understand how CO2 variation can interact with and influence other forcings" either. No one does. There is no "grand equation" published yet for how the earth's climate works. People speculate, postulate, make computer models, ...
We on the "AGW is crap" side think that, since there is essentially zero CO2 in our atmosphere, it probably has no measurable effect on climate. AGW people think otherwise. Time will tell.
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Review: Earth’s Energy Budget Terminology
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Originally Posted by www.atmo.arizona.edu/students/courselinks....
http://www.atmo.arizona.edu/students...01s54/lec7.ppt
Sunlight warms the earth’s surface only during the day, whereas the surface constantly emits infrared radiation upward during the day and at night. (a) Near the surface without water vapor, CO2, and other greenhouse gases, the earth’s surface would constantly emit infrared radiation (IR) energy; incoming energy from the sun would be equal to outgoing IR energy from the earth’s surface. Since the earth would receive no IR energy from its lower atmosphere (no atmospheric greenhouse effect), the earth’s average surface temperature would be a frigid –18°C (0°F). (b)With greenhouse gases, the earth’s surface receives energy from the sun and infrared energy from its atmosphere. Incoming energy still equals outgoing energy, but the added IR energy from the greenhouse gases raises the earth’s average surface temperature about 33°C, to a comfortable 15°C (59°F).
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...a comfortable 59°F... before that balance with outgoing energy (due mostly to water vapor) is achieved.
Edude,
Do you "believe" this part of the story?
This is the basic introductory lesson on the theory of Earth's climate, at any university in the world.
There could be better wording, or more details on which heat is doing what in various parts of the atmosphere, but the basic idea is the same across the board.
Do you think this stuff is right?
Thanks,
~
