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Politics : PRESIDENT GEORGE W. BUSH
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To: Thomas A Watson who wrote (528387)1/23/2004 4:34:13 PM
From: DuckTapeSunroof  Read Replies (1) of 769670
 
"What is never said is that water vapor is the most dramatic and potent greenhouse gas"

>>> Might as well say 'anti-greenhouse gas' ceuterus paribus.

>>> Higher humidity = more clouds = higher albedo for the Earth (higher reflectivity) so more of the sun's radiation is reflected away... resulting in lower temperatures.

>>> The opposite effect, as you point out, is the 'blanket effect' when night time temperatures are warmer because of less radiative cooling into space.

>>> And, when you are talking natural albedo... there is little that beats the reflectivity of ICE.
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