Judith Curry has the goods on this latest bout of junk science:
My main conclusion from reading the report is this: the phrase ‘climate change’ is now officially meaningless. The report effectively implies that there is no climate change other than what is caused by humans, and that extreme weather events are equivalent to climate change. Any increase in adverse impacts from extreme weather events or sea level rise is caused by humans. Possible scenarios of future climate change depend only on emissions scenarios that are translated into warming by climate models that produce far more warming than has recently been observed.
Roger Pielke approves.