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To: J.B.C. who wrote (44547)	10/10/2000 9:54:42 AM
From: carranza2	Respond to of 769667

Read what the scientists are saying: books.nap.edu

To: J.B.C. who wrote (44547)	10/10/2000 10:14:23 AM
From: carranza2	Read Replies (1) \| Respond to of 769667

More on water vapor as a greenhouse gas: cdiac.esd.ornl.gov Water vapor is indeed a very potent "greenhouse" gas, in terms of its absorbing and re-radiating outgoing infrared radiation. It is commonly not mentioned as an important factor in global warming, because it is not clear that the atmospheric concentration (as compared with CO2, methane, etc.) is rising. Some (Richard Lindzen at MIT, prominently) have argued that the uncertain potential feedbacks involving water vapor represent a serious shortcoming in models of climate warming. See the following online resource for a good discussion of this issue: eia.doe.gov [RMC]