The term Blue Ocean Event (BOE) refers to a condition in which the Arctic Ocean becomes effectively ice-free during late summer, typically defined as sea ice extent falling below 1 million square kilometers. This threshold represents a critical shift in the Arctic climate system, with profound implications for global weather patterns, ocean circulation, ecological stability, and human systems sec-int.co/…/arctic-sea-ice-collapse-and-the-“blu… I can’t be the only one that didn’t know what it meant.