Perhaps they'd care to quote Anthony Watts:
The cooling effect is found to be -21 Watts per meter squared, more than 17 times the posited warming effect from a doubling of CO2 concentrations which is calculated to be ~ 1.2 Watts per meter squared. This -21 w/m2 figure from Richard P. Allan is in good agreement with Spencer and Braswell.For the IPCC this comes at a bad time. A successful hatchet job on Spencer and Braswell will mean that it can be safely side-lined in AR5, but what about this one? With sceptics highlighting the existence of the paper, it's not going to be possible to pretend that this new result doesn't exist.
In the rest of the news, the direct results of global warming hysteria are there for all to see. Increasing energy costs are causing pain, and so we see the despicable Chris Huhne yet again attempting to shift the blame anywhere but himself and his colleagues in the political classes.