"matt_sykes" wrote:

Regardless of whatever the surface temperature has done in the
last 30 years, WV has decreased.

Actually atmospheric water vapour has increased and is very strongly
correlated with global atmospheric temperature (the black curve):

http://tamino.files.wordpress.com/2010/08/humid2.jpg

Credit:
http://tamino.wordpress.com/2010/08/...an-wet-island/

So the climate is doing what Arrhenius expected it to do, 120-odd years ago.
The water vapour feedback approximately doubles the warming impact of CO2
rise.

BTW, see if you can figure out why the graph you cited in your comment is
misleading. Look at the logarithmic scale of the Y axis for example.