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Environment

Hurricane Felix Weakening; Links and Miscellany

The IntersectionBy Chris MooneySeptember 4, 2007 3:45 AM

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Felix's weakening has been fairly pronounced since this morning; it's now a weak Category 4, though the hurricane guys expect a slight bounce-back before landfall. In the meantime, we're in the waiting phase: The damage will depend upon the precise track, speed, and so on. No one can predict it in any detail, though there are certainly some bad rainfall-related scenarios for Central America. To pass the time, I pulled together some good links about Felix, which I'd encourage you to check out:

The Flight of Their Lives? It was a hell of a reconnaissance mission into the explosively intensifying Felix last night. Jeff Masters relates the details. Which was the Real Anomalous Atlantic Hurricane Year, 2005 or 2006? The Houston Chronicle's Eric Berger asks that question in a very thoughtful post. My answer: We may well go into a more El Nino-like world, but for the moment it sure looks like 2006 was the anomaly...not only a quieter year in a very active era, but it has been bookended by years chock full of Category 5 hurricanes. Anyways, Berger rightly concludes: "The safe bet is that the scientific debate over hurricanes and global warming is back on the front burner." Hurricanes and Coral Bleaching? Princeton climate scientist Simon Donner uses Hurricane Felix as the launching point for a very thoughtful post on what strong hurricanes and coral bleaching events have in common--namely, warm sea surface temperatures. Donner publishes top papers in this area, so definitely check out what he has to say. Get Over It? Over at Stoat, William Connolley takes me to task a bit for my posts about how many Cat 5s we've seen lately. I really don't understand his criticism. I include a lot of caveats in my posts, so as to give a sense of what we do and don't know. But nevertheless, the facts are these: Many scientists think hurricanes are intensifying on average because of global warming, and have published as much in the literature. Meanwhile, we now have seen 8 Category 5 Atlantic hurricanes in the last 5 years. While these data are far too limited to be considered proof of systematic hurricane intensification, is it really unfair even to mention global warming and its relation to hurricanes in this context--even when including the requisite caveats, and even when I wrote an entire book that explains those caveats in further detail, and that outlines the various problems with our hurricane data that make broad conclusions so difficult? I hardly think so. Under Pressure. And finally, I'll end with a question: Does anyone know how to account for the fact that Felix's apparent lowest pressure, 929 millibars, was so much higher than that of Hurricane Dean--906--even though both were at 145 knot peak winds? Is this just a difference dependent upon storm size, or is there more to it than that?

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