Record Low Antarctic Sea Ice Cover in February 2022
Record Low Antarctic Sea Ice Cover in February 2022
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2022 年 2 月南极海冰覆盖面积创历史新低
DOI：
10.1029/2022gl098904
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发表时间：
2022
影响因子：
5.2
通讯作者：
Bajish, C. C.
中科院分区：
文献类型：
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作者：
Turner, John;Holmes, Caroline;Caton Harrison, Thomas;Phillips, Tony;Jena, Babula;Reeves‐Francois, Tylei;Fogt, Ryan;Thomas, Elizabeth R.;Bajish, C. C.
2022年2月25日，南极海冰面积降至1.92 × 106平方公里的卫星时代最低水平，比长期平均值低0.92 × 106平方公里。海冰面积也处于1.24 × 106平方公里的历史最低水平。虽然没有个别地区处于历史最低水平，但至少南大洋所有地区都出现了负海冰异常，其中罗斯海（占46%）和威德尔海（26%）最大。2021年10月/11月，阿蒙森海低压的深度创历史新低，一系列非常深的低压带来强劲的离岸风。这些冰在融化季节加速了冰的流失，在罗斯海形成了一个1.00 × 106平方公里的沿海冰穴。在北方威德尔海，创纪录强度的西风导致该地区的冰输出。
On 25 February 2022 Antarctic sea ice extent dropped to a satellite‐era record low level of 1.92 × 106km2, 0.92 × 106km2below the long‐term mean. The area of sea ice was also at a record low level of 1.24 × 106km2. Although no individual sector was at a record low, at the minimum there were negative sea ice anomalies in all sectors of the Southern Ocean, with the largest in the Ross (contributing 46%) and Weddell Seas (26%). The Amundsen Sea Low had a record low depth in October/November 2021, with a series of very deep depressions giving strong offshore winds. These accelerated ice loss during the melt season, creating a 1.00 × 106km2coastal polynya in the Ross Sea. In the northern Weddell Sea, westerly winds of record strength led to ice export from the region.