I have spent some hundreds of hours listening to arguments for global warming, er Catastrophic Anthropogenic Climate Change or AGW or ACC (or whatever the PC acronym is this week) The problem that I keep getting back to is best phrased like this: archaeological climate record extrapolation is nowhere near as sure-fire as supporters make it out to be. I have many more problems, but this one addresses the current artic…
"There's also quite a bit of ad-hominem character assassination going on, even in this piece. I find that folks who have to result to labeling and name-calling usually are insecure about their position." Yes, the amount of derision, even targeting scientists who merely hold an opposing interpretation of the data, is troubling.
So another explanation for the ad hominems remarked on here would seem to be: many climate scientists think that denying AGW is about as sensible as denying evolution. For what it's worth, this seems to me a more likely explanation than that they're "insecure about their position".
Incidentally, there's not exactly been a shortage of ad hominem attacks going the other way. My impression, of which I'm not particularly confident, is that the density of personal attacks on opponents is higher in the output of AGW disbelievers than in that of AGW believers.