March 13, 2017

This year's Iditarod sled dog race is underway, but it was forced to start hundreds of miles farther north than usual due to poor snow conditions.

February 17, 2017

The Arctic sea ice's typical winter expansion has been sluggish in 2016-17. Following a record-low January extent, this year's winter maximum may wind up being the smallest on record.

January 10, 2017

In 2016, daily temperatures in Alaska that were warmer than average outnumbered those that were cooler than average by a 9 to 1 ratio.

Sea ice anomaly, November 2016
December 14, 2016

A black swan event is a situation so rare that few people would have imagined it was possible. In November 2016, researchers were caught off guard by just such an event: extremely low sea ice extents in both the Arctic and Antarctic.

September 16, 2016

The Northwest Passage across the Canadian Arctic opened once again in 2016 as sea ice reached its second lowest extent on record.

2016 Arctic sea ice minimum extent overlain on globe
September 15, 2016

In September 2016, Arctic sea ice tied with 2007 for the second-lowest minimum extent in the satellite record, underscoring an ongoing trend of sea ice decline.

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