2018年白令海冬季海冰至少5500年来最低

Science Advances, September 2

Summer sea ice minimums receive the most attention; but Arctic sea ice has been declining year-round, and new reconstructions place the 2018 winter maximum in the Bering Sea as the lowest in at least 5500 years.  The 2018 and 2019 maximums were also 60-70% lower than the averages recorded since consistent satellite measurements began in 1979.  Results also suggest a delayed response of Bering Sea sea ice to anthropogenic emissions, which could mean a year-round ice-free Bering Sea would occur around 2070 under continued high emissions. Loss in the Bering Sea will accelerate coastal erosion, alter or eliminate traditional fisheries and food webs, and further amplify sea ice retreat in other parts of the Arctic Basin.

艾米·伊姆迪克编