GoKawiilAntarctica’s west coast is missing an area of winter sea ice the size of France, sparking concerns for threatened penguins other marine life and global sea levels.
One expert said the loss of ice in the Bellingshausen Sea was “depressing” and the failure of ice to form could have intensified a heatwave over the continent’s peninsular last week that saw daytime temperatures peak at 15.4 degrees Celsius which is more than 20 degrees Celsius above average.
It’s winter in Antarctica, when sea ice expands rapidly around the continent peaking in September.
But satellite observations showed the Bellingshausen Sea—on the west side of the Antarctic peninsular and which by June would usually be covered by ice—was almost completely ice free.
Scientists said the region was missing about 650,000 square kilometers (250,000 square miles) of sea ice, compared with the average between 1991 and 2020. That is an area about the size of France and almost tenfold the size of Tasmania.
“I’m concerned. It’s depressing,” said Dr Will Hobbs, an Antarctic sea ice expert at the University of Tasmania with the Australian Antarctic Program Partnership.
“It is remarkable that we are in June, and there is no sea ice there.”
He said this was the third time in four years that sea ice had been very low in the region. “I don’t think we will see sea ice there any more. It’s done,” he said.
He said the loss of sea ice was likely linked to changes in the ocean and scientists were trying to understand if global heating was a factor.
He said the region was important for krill—a critical part of the food web for species in the region. Krill would usually be hiding from predators under the ice in winter, where they graze on algae.
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