Arctic sea ice

A team of researchers use sea ice concentration data at NSIDC to catch another massive phytoplankton bloom under thick Arctic sea ice in the Chukchi Sea.

A Chinoook salmon swims in a river

Sea ice data from NSIDC helps the Alaska Department of Fish and Game forecast the arrival of Chinook salmon at mouth of the Yukon River in the Bering Sea, where one of the greatest migrations on Earth begins.

We’ve all heard it: Arctic sea ice is melting. Sea ice is thinner year to year and there is less of it. In 2007, scientists observed a nearly 50 percent loss of summer ice as compared to 1980....

Although Arctic sea ice extent did not set a low record this year, it’s still clear that there is less sea ice than there used to be. Scientists are keeping a close eye not only on the dwindling...

Unlike people, animals, news stories, and sitcoms, Arctic sea ice has not gotten older with time—it has gotten younger. Very little old ice, typically four years old or older, remains. During the...

This satellite image of the Great Arctic Cyclone was taken on August 7, 2012 when the center of the storm rolled...
The U.S. Coast Guard Cutter Healy encountered only small patches of sea ice in the Chukchi Sea when this...
Drilling oil in the Arctic is a formidable task. Northstar Island is an artificial island located twelve miles...

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...

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