
Heavy European Snowfall Caused by 'Weather Collision'
WiredBy Duncan Geere, Wired UK The uncharacteristically snowy weather that hit Northern Europe and North America in the winter of 2009/10 was caused by a rare combination of two separate weather oscillations in the Atlantic and Pacific, claim meteorologists. Some climate skeptics cited the conditions as evidence against climate change, while other people pointed out that most climate change predictions include an increase in extreme weather events. But the research, published in Geophysical Research Letters, claims that neither are correct, and that the freak weather was actually caused by an unusual match-up of a moderately strong El Niño event, and an extremely strongly negative North Atlantic oscillation. An El Niño event tends to push storm systems towards the equator, making the weather in the US and Northern Europe wetter than normal.
History of this topic

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