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D.C. record snow in 2010 not due to global warming
Friday, July 30th 2010, 6:59 PM GMT
Co2sceptic (Site Admin)
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Top panel: Global surface temperature trends over the last 50 or so years, courtesy NOAA. Bottom panel: Snow at the Capitol this past winter. By CWG photographer Ian Livingston.
Memories of the record-breaking cold and snowstorms of last winter, including Snowpocalypse, Snowmaggedon and Snoverkill, have probably faded, as eventually will be true of memories of the record-breaking heat this summer. Unless, that is, the extreme winter and summer weather prove to be just a preview of conditions that become the new normal as a consequence of global climate change. Should that prove the case, it might be hard to forget "the good ole days" when the extremes of winter/summer of 2009/2010 were the exception, not the rule.

How likely is that we're entering an age where extremes in weather become the new normal? Personally, I believe the weight of evidence viewed objectively points in that general direction, although there is much uncertainty about details of how, when, where and in what phenomena and parameters extremes will appear and have consequence in human affairs.

In regard to the snowstorms that affected the D.C. metro region and other mid-Atlantic and northeast coastal regions, a new study by a team of scientists at Columbia University's Lamont-Doherty Earth Observatory argues that global warming was not involved. Rather, the study finds the anomalous winter was primarily the result of convergence of an exceptionally strong El Nino and unusually strong negative phase of North Atlantic Oscillation (NAO).

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