Author : PlanetaryPhysicsGroup (but really, its Doug Cotton again)
<b>What is the sensitivity for each 1% of the most prolific "greenhouse gas" (namely water vapor) in Earth's atmosphere?</b>
To help any of you answer the question, here are some facts:
<b>Fact 1:</b> Water vapor absorbs a significant amount of incident solar radiation as shown <a href="https://www.google.com.
<b>Fact 2:</b> The concentration of water vapor varies between about 1% and 4%. (The concentration of carbon dioxide above Mauna Loa is 0.04% and, as <a href="http://
<b>Fact 3:</b> The IPCC claims that water vapor does nearly all of "33 degrees of warming" of Earth's surface. It must do most of it because it dominates CO2 in concentration and also in the number of frequency bands in which it absorbs and radiates. But in fact water vapor lowers the "lapse rate" so that the temperature profile rotates downwards at the surface end, making the surface cooler. (In fact, as per my <a href="http://www.climate-
When you have answered the question, work out how much hotter the IPCC conjecture implies a region with 4% water vapor would be than a similar region with 1% water vapor at a similar altitude and latitude. Then look up the study in the Appendix of my <a href="http://www.climate-
Finally, note that it is quite clear in the energy diagram <a href="http://climate-change-