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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?


To: longnshort who wrote (18904)12/26/2007 3:31:33 PM
From: neolib  Read Replies (1) | Respond to of 36921
 

Given the closeness of the numbers (±32 watts < 10%), the Earth radiates little or no more energy than it receives from the Sun. In other words, there is no significant energy received at the Earth's surface from any interior source. (Contrast this with Jupiter, which radiates about 10 times the energy it receives from the Sun.)


As I stated, we radiate more than we receive. Any moron can deduce that from the fact that the core is 2000 K (or whatever it is ) which is >> the surface temp. But the idiot I was posting to is unfamiliar with basic thermodynamics. If we didn't radiate more than we received (forget the nonsense about it being "or no more" above, that is a fool talking as well. LOL!) the surface temp would eventually become in equilibrium with the core. We must radiate, or boil. Take your pick.



To: longnshort who wrote (18904)12/26/2007 3:32:43 PM
From: HPilot  Respond to of 36921
 
The average surface temperature of the Earth (which is another blackbody) is 287 Kelvins (14°C). This works out to an energy output of 385 watts per square meter, while we have calculated solar energy input as 353 watts per square meter (which corresponds to a surface temperature of about 281 Kelvins, or 8°C).

Calculated? Did that include the energy assorbed by the clouds? What is measured?