[BillM]

You kind of forgot water at 1 to 4 percent. Water IS what converts heat at the surface to warming of the atmosphere. It does that by transferring 539 calories per gram of heat of vaporization directly to those surrounding gases.

http://miltonconservative.blogspot.ca/search?q=latent

[Go Gordon]

You kind of forgot water at 1 to 4 percent. Water IS what converts heat at the surface to warming of the atmosphere. It does that by transferring 539 calories per gram of heat of vaporization directly to those surrounding gases.

Thanks Bill, that's helpful. My point is to get the global warming crowd to explain how "man-made" CO2 has any effect on "climate Change" because without the causal connection, there is no need to ruin the US economy and steal hundreds of billions of dollars from US taxpayers.

Actually, I'd like to know whether the global warming crowd can explain what the optimum levels of CO2 should be, and what they were pre-1900, knowing that today CO2 represents only 0.039%