“The sea-ice surrounding Antarctica is well below any previous recorded winter level, satellite data shows, a worrying new benchmark for a region that once seemed resistant to global warming. “It’s so far outside anything we’ve seen, it’s almost mind-blowing,” says Walter Meier, who monitors sea-ice with the National Snow and Ice Data Center.”
Maximum extent this year occurred on September 12 at 17,588,125 km. sq.
Nine years ago, Walt Meier wrote a paper describing much lower extent during the winter of 1966.
Extent on September 12 was very similar to the same date in 1986.