News & Stories

Across the globe, snow and ice play a vital role in regulating Earth’s climate and providing freshwater resources to people, plants, and animals.

As Earth’s frozen regions change rapidly, NSIDC is committed to growing its research and open access data to better understand these changes. Read about NSIDC research and its contribution to science and policy making. Check out spotlights on how to use NSIDC data, tools, and resources. Learn about how we steward data and collaborate with scientists and organizations across the world to understand how the frozen parts of Earth affect the rest of the planet and impact society.

News and stories

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Snow-disappearance anomaly map and graph
Analysis - Snow Today
Snow-covered area was well below average in May 2021. The number of snow cover days since October 1, 2020, is well below average. Every state in the West had below average snow cover in the month of May.
Analysis - Sea Ice Today

A stormy May over the eastern Arctic helped to spread the sea ice pack out and keep temperatures relatively mild for this time of year. As a result, the decline in ice extent was slow.

Snow-cover-days anomaly map, April 2021
Analysis - Snow Today
Snow-covered area was below average in April 2021 with recent storms on the west coast pushing conditions closer to average. Snow cover days, cumulative over the season, are well below average for this water year, which spans from October 1, 2020 to present.
Analysis - Sea Ice Today

The spring decline in Arctic sea ice extent continued at varying rates through the month of April, highlighted by a mid-month pause.