North American sea ice extent and volume  have declined up to 10% per decade since 1981 , with changes accelerating during this time  , resulting in longer and larger periods of open water . Recent  sea ice extent in the Bering Sea was the lowest in a 5500-year record and appears to lag atmospheric CO2 by about two decades . High Arctic sea ice retreat since 1971 and increases in open- water duration in the most recent decade are unprecedented  and most pronounced in the Chukchi, Bering and Beaufort seas   .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report