For some odd reason the question of the linkage, or otherwise, between hurricanes and global warming is in the news at the moment. As to the details, I have rather little to say, on the grounds that hurricanes in the Antarctic are unknown. I will recommend this RC post if you're interested; also RP Jr has quite a bit to say about the issue recently. But I do want to make a comment about the attribution question. As far as I can tell, while its premature to say: "an increase in hurricanes can be attributed to global warming", its equally wrong to say "global warming has had no effect on hurricanes".
Which is why I find RP Jrs latest rant on ceding the high ground odd, because he apparently approves of James Glassman at TCS who sez Katrina has nothing to do with global warming. Nothing. Approving of anything on TCS is a strange thing to do, and I can't see why this one should be approved of. It looks like some kind of reverse-fallacy to me: failing to attribute to GW doesn't do the reverse, ie it doesn't demonstrate a lack of connection. Is it perhaps the "unexcluded middle" fallacy?
Having said that, the perceptive will notice that I welcome RP Jr back onto my blogline, and Sr (and not just because I got him to nuance his nuances a bit more).