Tuesday, November 21, 2006

Another Inconvenient Myth Disproved

Remember that awful disaster movie where global warming would actually cause a new ice age in the Northern Hemisphere? Me neither. Anyway, the scientific gambit that drove the whole plot was an article that appeared in Nature that showed that the Atlantic meridional overturning circulation (or MOC) had slowed down because of man-made global warming, and the warmer water from equatorial regions was no longer keeping things comfortable. Well, according to World Climate Report, another article in Science has just shown that, after collecting more data from the same instruments, the supposed slowdown of the MOC is non-existent, and that the original interpretation of the data in the Nature article was just hoping too much to see a trend in the data that was well within the error margins. It seems that Al Gore's Power Point presentation should be getting shorter and shorter.

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