On Monday, 17 February 2014 19:46:03 UTC+1, Togless wrote:
"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.

It took you what, 2 days to find a graph that shows WV increasing? I mean there are thousands of papers published all over the world, many of which have poor peer review, or which are based on model predictions, or which are just plain theoretical. Have you checked these three papers to make sure they are valid?

Because clearlyt, NASA satellite data, no theory, no process, no modeling, just plain shows that you are wrong and that WV has in fact decreased.


So, lets take a look:

Dai 2006. COuldnt find his actual paper, but found this desription: http://airs.jpl.nasa.gov/documents/s.../slides/Ye.pdf "Water vapor changes There is a large regional variation due to complex local effects, negative relationship is observed in some regions, Dai 2006"

And dont forget Dai is station based data, not across the entire atmisphere, like the NASA WV project data is.



Willet et al. http://journals.ametsoc.org/doi/pdf/...2008JCLI2274.1 Its surface humidity again. Oddly though its 20S to 20N shows a big change, yet the tropics have had hardly any warming. Very odd. Quoite unexpected by any theory!

I womnt look at BErry and Kent, it is time to eat. But the moral is, just slinging links is not good enough; you need to read to criticise what you are reading.