Over on the Spencer Good, Bad and Ugly response to Dessler 2011 thread on WUWT, Bill Illis quietly drops this little bombshell:
While we are having no luck finding a good correlation between clouds and temperatures in a feedback sense (the scatters are providing r^2 of 0.02) which indicates there is probably NO cloud feedback either way (and the IPCC calculates that positive cloud feedback might be half of the total feedbacks so that is very clearly in question now) …
There is a very interesting relationship between the Net Cloud Radiation levels and the Total Global Net Radiation as measured by the CERES satellite (which I don’t think anyone has looked yet being busy trying to find the temperature feedbacks).
I’m getting Cloud variability being a very large part of the variability in the total Global Net Radiation Budget – anywhere from 65% to 100% (with R^2 between 0.29 and 0.77).
First the (not really convincing but better) scatter using the CERES data (that Steve McIntyre and Roy Spencer made available).
And then the (much, much better) relationship over time.
And then the versions of the data that Dessler provided (where adjustments where made according to the ERA reanalysis dataset which some think is actually a little more accurate). 100% of Net Radiation governed by Clouds with R^2 at 0.77 .
And then over time, a really tight relationship.
So, do Cloud Variations affect the Earth’s Energy Budget? – the title of Dessler’s new paper – His own data says: