Saturday, February 21, 2015

Melting Arctic and Weird Weather: The Plot Thickens

The polar jet stream – a fast river of wind up where jets fly that circumnavigates the northern hemisphere – has been doing some odd things in recent years. Rather than circling in a relatively straight path, it has meandered more in north-south waves. These long-lived shifts have been responsible for some wicked weather this winter, with cold Arctic winds blasting everywhere from the Windy City to the Big Apple for weeks at a time.


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