Record Arctic Ozone Loss in Spring 2020 is Likely Caused by North Pacific Warm Sea Surface Temperature Anomalies

被引：0
作者：
Yan Xia
Yongyun Hu
Jiankai Zhang
Fei Xie
Wenshou Tian
机构：
[1] Beijing Normal University,College of Global Change and Earth System Science
[2] Chinese Academy of Sciences,Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics
[3] Peking University,Laboratory for Climate and Ocean
[4] Lanzhou University,Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics
来源：
Advances in Atmospheric Sciences | 2021年 / 38卷
关键词：
Arctic ozone loss; stratospheric polar vortex; sea surface temperature; planetary-scale wave; climate change; 北极臭氧损耗; 平流层极涡; 北太平洋海温; 行星波;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Record ozone loss was observed in the Arctic stratosphere in spring 2020. This study aims to determine what caused the extreme Arctic ozone loss. Observations and simulation results are examined in order to show that the extreme Arctic ozone loss was likely caused by record-high sea surface temperatures (SSTs) in the North Pacific. It is found that the record Arctic ozone loss was associated with the extremely cold and persistent stratospheric polar vortex over February–April, and the extremely cold vortex was a result of anomalously weak planetary wave activity. Further analysis reveals that the weak wave activity can be traced to anomalously warm SSTs in the North Pacific. Both observations and simulations show that warm SST anomalies in the North Pacific could have caused the weakening of wavenumber-1 wave activity, colder Arctic vortex, and lower Arctic ozone. These results suggest that for the present-day level of ozone-depleting substances, severe Arctic ozone loss could form again, as long as certain dynamic conditions are satisfied.
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页码：1723 / 1736
页数：13
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