Weather

What is the polar vortex?

This view of Chicago was taken from Diversey Harbor on January 7, 2014, when a trough of the Northern...

Does dusty snow mean less water in the Rockies?

Have you been skiing in the Western U.S. and been surprised by brown snow? We recently talked to a research team that studies these coats of dirt. The dust storms that cause dusty snow appear to...

Are Arctic cyclones chewing up sea ice?

This satellite image of the Great Arctic Cyclone was taken on August 7, 2012 when the center of the storm rolled...

The Arctic Oscillation, winter storms, and sea ice

The Arctic Oscillation (AO) is a large-scale climate pattern that influences weather throughout the Northern...