West Antarctica Leaves 150,000 Square Miles Ice-Free in Mid-Winter as Models Miss Refreeze Failure
Updated
Updated · CounterPunch · Jul 17
West Antarctica Leaves 150,000 Square Miles Ice-Free in Mid-Winter as Models Miss Refreeze Failure
3 articles · Updated · CounterPunch · Jul 17
Summary
Satellite imagery dated July 12 showed about 150,000 square miles of West Antarctica still ice-free in mid-winter, when the region would normally have refrozen after a heatwave.
Scientists say the failure is especially alarming because no climate models predicted winter refreezing would stall in one of Earth’s coldest regions, where average Antarctic winter temperatures are about -34.4°C.
Recent research has already raised the stakes: a 2025 study found the West Antarctic Ice Sheet could enter irreversible collapse at ocean warming of 0 to 0.25°C above current levels, with roughly 4 meters of eventual sea-level rise.
The anomaly follows a broader Antarctic shift since 2015, including record-low winter sea ice in 2023 that researchers called a one-in-3.5 million event and a glacier retreat of 8 kilometers in two months earlier this year.
The report ties the accelerating changes to rising greenhouse-gas concentrations, noting Mauna Loa CO2 reached 432 parts per million in May as countries remain off track on Paris climate pledges.
Could melting Antarctic ice shut down a vital Atlantic current, plunging continents into climate chaos?
With climate models failing, what overlooked forces are now pushing Antarctica past its point of no return?
The 2026 Collapse of West Antarctic Sea Ice: Unprecedented Loss, Climate Drivers, and Global Impacts
Overview
In July 2026, West Antarctica experienced an unprecedented collapse of sea ice, with scientists observing conditions never before seen in the satellite era. This dramatic loss, especially in the Bellingshausen Sea, followed an extraordinary winter heatwave and unusual weather patterns across the Antarctic Peninsula. Experts warn that these events are clear signs of a world warming due to climate change, as stronger winds and rising ocean heat drive rapid ice melt. The situation marks a profound shift in the region’s climate, raising alarms about irreversible changes and highlighting the urgent need for global action to reduce greenhouse gas emissions.