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Causes of the record-low Antarctic sea-ice in austral summer 2022

Chao Zhang Shuanglin Li

大气和海洋科学快报（英文版）2023，Vol.16Issue(6)：22-27,6.

大气和海洋科学快报（英文版）2023，Vol.16Issue(6)：22-27,6.DOI:10.1016/j.aosl.2023.100353

Causes of the record-low Antarctic sea-ice in austral summer 2022

Chao Zhang ¹Shuanglin Li²

作者信息

1. Department of Atmospheric Science and Science and Technology Innovation Center,School of Environmental Studies,China University of Geosciences,Wuhan,China
2. Institute of Atmospheric Physics/Climate Change Research Center,Chinese Academy of Sciences,Beijing,China||Department of Atmospheric Science and Science and Technology Innovation Center,School of Environmental Studies,China University of Geosciences,Wuhan,China||College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,China
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摘要

Abstract

2022年夏季(2021年12月至2022年2月)南极海冰面积达到历史新低,西南极减少最显著.2021年8～10月南半球环状模接近历史最强和7～9月海洋性大陆附近海温显著增暖是两个关键因素.由于平流层臭氧破纪录减少使得前者维持历史最强或接近最强,导致阿蒙森低压(ASL)加深并向西南移动,有利于海冰减少.后者持续到夏季,有利于拉尼娜的发展,通过激发罗斯贝波列加深ASL.在热力上,臭氧减少导致向下净短波辐射增加,引起西南极增暖.此外,净短波辐射-海温-云形成正反馈,与埃克曼输送一起,放大表面增暖,从而促进海冰融化.

关键词

南极海冰/历史新低/历史最强臭氧损耗/南半球环状模/拉尼娜/阿蒙森低压

Key words

Antarctic sea-ice/Record low/Unprecedented stratospheric ozone depletion/Southern annular mode/La Niña/Amundsen Sea Low

引用本文复制引用

Chao Zhang,Shuanglin Li..Causes of the record-low Antarctic sea-ice in austral summer 2022[J].大气和海洋科学快报（英文版）,2023,16(6):22-27,6.

基金项目

This work was jointly supported by a Strategic Project of the Chinese Academy of Sciences[grant number XDA19070402],the National Nat-ural Science Foundation of China[grant number 41790473],and the Post-doctoral Innovation Foundation of Hubei Province. （）

大气和海洋科学快报（英文版）

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ISSN：1674-2834

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