Polynyas are patches of open water surrounded by sea ice, where heat and moisture can pass freely between the ocean and atmosphere. In August 2024, a vast polynya opened up in Breid Bay, off the coast of East Antarctica, in the depths of winter. The region had stayed ice-covered at this time of...

Source: [Phys.org](https://phys.org/news/2026-10-atmospheric-rivers-portugal-sized-hole.html)

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