Re: atmospheric blanket / greenhouse effect

["John S. Denker" <jsd@AV8N.COM>]

On 07/29/2003 03:16 AM, Bernard Cleyet wrote:
> water vapour doesn't do the heat trapping - CO2 does.

How do we know that?   How sure are we?

Not everyone considers that self-evident, e.g.
  http://ganesh.colorado.edu/astr3720/exam2_sol.html  (item 11)
  http://www.etl.noaa.gov/et2/#wv
  http://astro.gmu.edu/classes/a10594/notes/l13/gif/l13s046.gif
  http://physicsweb.org/article/world/16/5/7
  http://www.earth.nasa.gov/visions/in-situ/chap33a.htm
       "Of the greenhouse gases water vapor is by far the most
       abundant and therefore the strongest absorber"