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

To: Thomas A Watson who wrote (11220)	4/7/2007 7:37:12 PM
From: maceng2	Read Replies (2) \| Respond to of 36917

And when all those ice crystals form their heat of vaporization energy also goes thru the very thin atmosphere back into space as infrared radiation. Sure OK, wonderous ice crystals. I am not talking about ice crystals. I am taking about the heating effect of a planet surface by the suns radiation. A darker surface on a planet will become warmer then a lighter surface. The main reason is more heat will be diffused into the surface during the day, and at a greater depth. Although the heat will radiate out faster during the night then the light surface, it will take longer to radiate out becuse the heat will have to diffuse back up through the soil (we are not talking about radiation here... diffusion of heat, then radiation at the surface). Therefore, over time, the surface will have a warmer depth profile.

To: Thomas A Watson who wrote (11220)	4/7/2007 7:49:07 PM
From: Land Shark	Read Replies (1) \| Respond to of 36917

30% of the Arctic Ice Cap has melted thanks to GW, exposing the sea, which is essentially a blacker body than the ice. A greater portion of the solar energy is absorbed by the seas than would be by the ice. Some of the absorbed heat in the waters is transfered to the air currents, most of it is retained (not reflected back into space). Not only does the sea warm at an accelerated rate as more and more ice melts, but so does the air and surface in the arctic regions. The point of GW is that less and less heat is lost to space as the CO2 concentration increases. For your education: nrdc.org