Long-lost 1960s aerial photos let Copenhagen researchers watch Antarctica’s Wordie Ice Shelf crumble in slow motion. By ...

New research challenges the long-held belief that the Arctic Ocean was covered by a massive ice shelf during ice ages.

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 ...

For decades, scientists believed the Arctic Ocean was sealed under a massive slab of ice during the coldest ice ages — but new research proves otherwise. Sediment samples from the seafloor, paired ...

We present a methodology to derive sea ice type classification maps in the Atlantic sector of the Arctic Ocean for the autumn through spring seasons, from 1991 to present. We use datasets from four ...

Weekly sea ice concentration charts from the U.S. National Ice Center (USNIC) along with total ice concentration, multiyear ice concentration, first-year ice concentration, thin ice concentration, and ...

Arctic sea ice, not a thick ice shelf like what we observe in Antarctic today (above), shaped the far north for 750,000 years. Photo credit: Matthias Forwick.

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 ...

Even during the coldest 750,000 years, the Arctic Ocean had open water and sustained life thanks to seasonal sea ice. “Our ...

In 1979, these sources give way to a single source: concentration from satellite passive microwave data. The historical observations come in many forms: ship observations, compilations by naval ...