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Some wild weather blamed on warming

WASHINGTON — A study of a dozen of 2012’s wildest weather events found that man-made global warming increased the likelihood of about half of them, including Hurricane Sandy’s devastating surge and the blistering US summer heat.

The other half — including a record wet British summer and the US drought last year — simply reflected the random freakiness of weather, researchers with the US National Oceanic and Atmospheric Administration and the British meteorological office concluded in a report issued Thursday.

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This is the second year that NOAA and the British meteorology office have teamed up to look at the greenhouse gas connection to the previous year’s unusual events.

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