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Even during the Antarctic summer, heavy sea ice conditions are not uncommon. This photograph of sea ice was...

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

Although Arctic sea ice extent as of June 2013 falls within the normal range, sea ice overall is still declining...

The Quelccaya Glacier in Peru is the largest glacier in the tropics. This glacier provides water to the city...

This graph shows the yearly trend toward later Arctic sea ice minimum dates, but also illustrates the wide...

Sea ice extent reached a new record low on August 27, 2012 and continued to decline. The last six years have...

Arctic sea ice was at record highs in the Bering Sea this spring, and near the long-term average for the...

The Arctic Ocean has lost more than 30 percent of its summer ice cover in the last thirty years. Scientists have...

On July 20, 2011, the U.S. Coast Guard Cutter Healy traveled through a break in the sea ice and melt ponds in...

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

National Snow and Ice Data Center