As the Northern Bering Sea ecosystem emerges from extraordinary warmth, a study warns of likely future occurrences.
Norton Sound, part of the Northern Bering Sea, is seen from the outskirts of Nome on Sept. 30, 2020. Record-low winter ice in 2018, followed by near-record low ice in 2019, shocked the Northern Bering ecosystem. Atmospheric conditions, in combination with warming conditions in the Arctic, are expected to bring repeat events occasionally through the end of the 2030s, according to a new study.
It is typically centered about at the middle of the North Pacific by the Aleutian Islands. When it is there, or farther to the east or south, it allows north winds from the Arctic to sweep over the Bering Sea and bring on the freeze, Overland said. But if it is far to the west, as it was in 2018, it sends warm winds up from the south, hindering Bering Sea freeze, he said.
That means preparing for more coastal erosion and flooding, like the disastrous conditions that occurred in Western Alaska during and generations. The 2018 record-low ice winter affected not only the fish and other marine life present at that time but also, because of poor or failed reproduction, the offspring of those year groups, according to scientists studying Alaska’s ocean ecosystems.
Several are summarized in a report newly released by the Alaska Center for Climate Assessment and Policy call. The report, “ Surprisingly to Overland and others, the Aleutian Low in 2019 was also located to the west, resulting in yet another winter of warmer southerly winds flowing into the Bering Sea and the spinoff effects, with ice extent that was
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