Weather

What about that hole in the sea ice?

There’s been discussion about a big opening in sea ice, called a polynya, and if it had anything to do with the Russian expedition ship, Akademik Shokalskiy , getting stuck near the Antarctic...

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 be...

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...

Are we in a snow drought?

The central and southwestern portions of the United States have experienced drought for the past several...

What caused last summer’s Greenland surface melt?

These satellite-derived maps show the extent of surface melt over Greenland’s ice sheet during the summer of 2012...

The Arctic Oscillation, winter storms, and sea ice

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

An Arctic hurricane?

This satellite image from November 8 shows the hurricane-like storm that hit Western Alaska earlier this month. Credit:...

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