New research reveals Antarctic sea ice has hit record lows three times since 2017, creating cascading effects on global ...

A salty surge in the Southern Ocean is melting Antarctic sea ice from below — and causing dramatic changes scientists didn’t ...

Seasonal sea ice forms and melts every year creating openings in the ice with open water where life can continue to thrive.

For years, scientists have debated whether a giant thick ice shelf once covered the entire Arctic Ocean during the coldest ...

NOAA@NSIDC is pleased to announce that the Sea Ice Index, Version 3 data set, accessible through the National Snow and Ice Data Center (NSIDC), has been updated from near-real-time data to final data ...

Many research groups are now focusing on ocean temperature changes and Arctic sea ice melt due to their broad global impacts.

Though sea ice extent increased slightly in April, up to 5.4 million square miles compared to 5.33 million square miles as of Feb. 27, the trends are now consistent with seasonal ice decrease ...

The Japan Aerospace Exploration Agency (JAXA) announced that the maximum extent of the Arctic Ocean's ice cover was the smallest in 2025 in over four decades, renewing the record eight years ago.

The Arctic’s winter ice extent reached its lowest recorded level in March since satellite monitoring began in 1979. On March 21, 2025, the sea ice cover measured 14.45 million square kilometres ...

Typically, sometime in March every year at the end of the long Arctic winter, the maximum of Arctic sea ice extent is reached. Slowly through spring, then accelerating through summer, most of that ...

The Arctic's winter ice extent reached its lowest recorded level in March since satellite monitoring began in 1979. On March 21, 2025, the sea ice cover measured 14.45 million square kilometres ...