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As climate changes, how do Earth's frozen areas affect our planet and impact society?
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Arctic sea ice has likely reached its minimum extent for the year, at 4.23 million square kilometers (1.63 million square miles) on September 19, 2023, according to scientists at the National Snow and Ice Data Center (NSIDC) at the University of Colorado Boulder. The 2023 minimum is ranked sixth lowest in the nearly 45-year satellite record.
Analysis - Sea Ice Today
Both Arctic and Antarctic sea ice appear to be heading toward their respective seasonal limits, reaching the lowest extent at the end of summer in the north, and the highest extent as winter ends in the south.
Analysis - Ice Sheets Today
A strong weather pattern from August 21 to 24 caused widespread melting across Greenland. This unusually late summer melt event was caused by a high and low air pressure configuration known as an omega pattern because of its jet stream shape.
Analysis - Sea Ice Today
While the first half of August saw a rapid pace of Arctic sea ice loss, the pace slowed during the latter half of the month as mostly cooler conditions set in.
Spotlight
The Contribution to High Asia Runoff (CHARIS) project began in 2012 and ended in 2019. The project aimed to distinguish between input from seasonal snow melt and glacier ice melt to High Asia rivers.
Spotlight
Long-time National Snow and Ice Data Center (NSIDC) scientist Richard Armstrong died August 3, 2023. He is remembered with admiration by colleagues and friends around the world.