Rerunning the frog and the scorpion, Tony Watts rolls out the AR5 draft and Andy Revkin is shocked as are some of the usual players. Why Eli asks, given the way in which the draft was made available to anyone who asked, would anyone be surprised that one of the scorpions would take a shot?
The logical deduction is that the draft had been pretty well scrubbed, that the IPCC knew this would happen and basically does not care what the clowns do. The bottom line which AR finds pretty fast:
It is extremely likely* that human activities have caused more than half of the observed increase in global average surface temperature since the 1950s. There is high confidence that this has caused large-scale changes in the ocean, in the cryosphere, and in sea level in the second half of the 20th century. Some extreme events have changed as a result of anthropogenic influence. [*In panel terminology, "extremely likely" denotes a 95-percent likelihood.]