摘要
The Arctic has experienced several extreme springtime stratospheric ozone depletion events over the past four decades,particularly in 1997,2011 and 2020.However,the impact of this stratospheric ozone depletion on the climate system remains poorly understood.Here we show that the stratospheric ozone depletion causes significant reductions in the sea ice concentration(SIC)and the sea ice thickness(SIT)over the Kara Sea,Laptev Sea and East Siberian Sea from spring to summer.This is partially caused by enhanced ice transport from Barents-Kara Sea and East Siberian Sea to the Fram Strait,which is induced by a strengthened and longer lived polar vortex associated with stratospheric ozone depletion.Additionally,cloud longwave radiation and surface albedo feedbacks enhance the melting of Arctic sea ice,particularly along the coast of the Eurasian continent.This study highlights the need for realistic representation of stratosphere-troposphere interactions in order to accurately predict Arctic sea ice loss.
在过去40年里,北极地区经历了几次平流层臭氧极端损耗事件,但北极平流层臭氧极端损耗对气候系统的影响仍然不十分清楚.本文发现北极平流层臭氧的极端损耗与春、夏季喀拉海、拉普捷夫海和东西伯利亚海的海冰密集度及海冰厚度的减少存在联系.这是由于平流层臭氧减少造成极地涡旋强度增强且持续时间延长,使得更多的海冰从巴伦支海-喀拉海和东西伯利亚海漂移到弗拉姆海峡,最终移出北极.此外,云层长波辐射和地表反照率辐射反馈增强了北极海冰的融化,特别是沿欧亚大陆海岸的海冰融化.本研究表明,准确预测北极海冰变化需要考虑平流层-对流层的相互作用对海冰的影响.
作者
Jiankai Zhang
Wenshou Tian
John A.Pyle
James Keeble
Nathan Luke Abraham
Martyn P.Chipperfield
Fei Xie
Qinghua Yang
Longjiang Mu
Hong-Li Ren
Lin Wang
Mian Xu
张健恺;田文寿;John A.Pyle;James Keeble;Nathan Luke Abraham;Martyn P.Chipperfield;谢飞;杨清华;牟龙江;任宏利;王林;徐勉(College of Atmospheric Sciences,Lanzhou University,Lanzhou 730000,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China;Department of Chemistry,University of Cambridge,Cambridge CB21EW,UK;National Centre for Atmospheric Science,Cambridge CB21EW,UK;School of Earth and Environment,University of Leeds,Leeds LS29JT,UK;College of Global Change and Earth System Science,Beijing Normal University,Beijing 100875,China;School of Atmospheric Sciences,Sun Yat-sen University,Zhuhai 519082,China;Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China;State Key Laboratory of Severe Weather,Institute of Tibetan Plateau&Polar Meteorology,Chinese Academy of Meteorological Sciences,Beijing 100081,China;Center for Monsoon System Research,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China)
基金
supported by Project of Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)(SML2021SP312)
the National Natural Science Foundation of China(4207506242130601,and 41922044)
the National Key Research&Development Program of China(2018YFC1506003)
the Fundamental Research Funds for the Central Universities,China(lzujbky-2021ey04)
Young Doctoral Funds for Gansu Provincial Education Department(2021QB-009)
supported by Supercomputing Center of Lanzhou University。
