Read here. Climate scientist Andy Dessler produced research that was a supposed refutation of the Spencer and Braswell research. It was pointed out previously that Dessler chose not to use the same HadCRUT data as Spencer, which smacks one as an extreme form of cherry-picking.
If one is to challenge another scientist's research, should they not be held to the standard of using the same data to make their case? Well....apparently not in Dessler's case since he obviously is driven by a political agenda, not a scientific one.
So, what happens when the Dessler methodology uses the gold-standard HadCRUT data that Spencer used? As Steve McIntyre discovers, the new results actually resemble Spencer's output suggesting that clouds provide a negative feedback.
Well, everyone now knows why Dessler avoided the HadCRUT data. His refutation of the Spencer study was literally a sham.
"Having exactly replicated Dessler’s regression results and Figure 2a, I’ve repeated the exercise with CERES clear sky in combination with CERES all sky, and with the widely used HadCRUT3 series and got surprising results...The supposed relationship between CLD forcing and temperature is reversed: the slope is -0.96 w/m2/K rather than 0.54 (and with somewhat higher though still low significance)."
Previous negative-positive feedback postings and those regarding the harm to science by liberal/left "scientists."