Headline
Deconstructing a Mystery: What Caused Snowmageddon?
United States
Two years later, scientists are still searching to identify the unique set of conditions that enabled storms of this magnitude to occur. To determine a direct cause to infrequent but major winter storms, Siegfried Schubert and colleagues Yehui Chang and Max Suarez -- all of NASA's Goddard Space Flight Center in Greenbelt, Md. -- became detectives...El Niño-induced sea surface temperatures and an extended negative phase of the North Atlantic Oscillation caused the changes in 2009-10 winter storminess.
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