Quote:
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Originally Posted by Bored Wombat
Quote:
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Originally Posted by cbacba
P = epsilon * sigma * T^4
epsilon = emissivity
sigma = stefan's constant
T = absolute temperature
P = power radiated / unit area (W/m^2)
do simple example - double P
and double double epsilon
what value do you have to change T by for the result to balance?
HINT = T doesn't have to change at all in the example.
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Increasing the concentration of CO 2 from 0.028% to 0.038% does not double epsilon for the atmosphere. In fact it makes nearly no difference at all in epsilon for the atmosphere. |
Evidently, you haven't yet grasped that epsilon is not a one value number often used as an engineering simplification but rather a very complicated function of wavelength.