The AGU presentation.
http://www.drroyspencer.com/wp-cont...rcing-Feedback-AGU-09-San-Francisco-final.pdf
Looping and linear patterns are shown to exist in the raw data of radiative forcing vs. temperature. A feedback signal is obscured by these. So how to extract the actual feedback when it is mixed up with "radiative noise"? By taking a subset of the data.
Previous analysis have ignored the two way street:
clouds <===> temperature
Looping and linear patterns in
radiative feedback was described by Spencer in a previous paper published in 2008. Here he found that all errors in the model runs for cloud feedback were in the direct of exaggerated positive feedback, to the order of 0.3 to 0.8 w/m^2 erroneously ascribed.
What that would mean is that actual climate sensitivity to a doubling of CO2 - eg a so called "forcing" - would be amplified by a much lower number for the "feedbacks".
My opinion: IPCC has a confidence range of 1.5 - 6.0C for one of the scenarios for next century temperature change. The midpoint which is commonly used is 3.0C,while alarmists love to focus on the 6C number.
More negative feedback not only lowers the 3.0C midpoint down to less than a degree, but much more importantly it cuts the 6.0C completely out. (Boatloads of positive feedback were required to get up to 6.0C.)
Were this scientific work (or follow on articles and work on this "unsettled" science) to completely cut out the 6.0C "edge of the envelope" warming, that seems quite significant. Then you have a 2x co2 climate sensitivity of say 0.6C (take that with a grain of salt, this is crude speculation) and an upper edge of the confidence interval of 2.0C or so.
EG, tightening the confidence intervals in prediction of climate change by lowering the uncertainties in the calculations is a major scientific accomplishment...IF AS ABOVE DISCUSSED the result is a change in the uncertainty from 6C-1.5C = 4.5C to some 2.0C-0.2C = 1.8C.
That's a third of previous uncertainty in the range of man's possible detrimental effects on the planet.
Well, that's just as stated my opinion, so don't pay any attention to it.