Terence Corcoran of the Trono Globe and Mail has some thoughts here. A very telling quote:
I'd say the confidence intervals around any climate forecasts must be seriously, freaking wide. In non-stat speak that means, "Who knows what's gonna happen?"
At the Global Warming Policy Foundation in London, David Whitehouse zeroed in on the AR5’s graphic recognition that its previous computer-temperature warnings have failed to materialize. Models projected rises over the last two decades, when in fact no increase has taken place.
Others piped in on other issues. Roger Pielke Jr., of the University of Colorado, said AR5 amounts to an “almost complete reversal” of the previous claims regarding trends in hurricanes, drought, and floods. The IPCC now has “low confidence” that hurricanes have increased: “Current data sets indicate no significant observed trends in global tropical cyclone frequency.”