Antarctic sea ice reached a record low minimum extent at 1.92 million square kilometres on 25 February – and now weather stations on the continent are seeing record high temperatures.
Abnormally hot air has hit both of the world’s poles at once, while the extent of Arctic sea ice appears to have been historically low this winter.
“The Antarctic [heat] is really extreme. I haven’t seen anything like that. Colleagues haven’t seen anything this extreme,” saysA band of westerly winds around Antarctica usually isolates the continent from other weather systems.
The record temperatures come shortly after Antarctic sea ice declined to a record low minimum extent, at 1.92 million square kilometres on 25 February. “It was quite a lot lower than anything else in the 40-plus year record,” says Scambos. Temperatures have also been unusually high in the Arctic recently, with some areas 30°C warmer than usual and the region as a whole 3.3°C hotter than the long-term average.
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