Impacts of High-Frequency Atmospheric Forcing on Southern OceanCirculation and Antarctic Sea Ice

作     者：Yang WU Zhaomin WANG Chengyan LIU and Xia LIN Yang WU;Zhaomin WANG;Chengyan LIU;Xia LIN

作者机构：College of OceanographyHohai UniversityNanjing 210098China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China International Polar Environment Research LaboratoryHohai UniversityNanjing 210098China University Corporation for Polar ResearchBeijing 100875China 

出 版 物：《Advances in Atmospheric Sciences》 (大气科学进展（英文版）)

年 卷 期：2020年第37卷第5期

页      面：515-531页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 0705[理学-地理学] 070501[理学-自然地理学] 

基　　金：the National Natural Science Foundation of China(Grant No.41806216) the China Postdoctoral Science Foundation(Grant Nos.2019 T120379 and 2018M630499) the Fundamental Research Funds for the Central Universities(Grant No.2018B19214) Zhaomin WANG was supported by the National Natural Science Foundation of China(Grant Nos.41941007 and 41876220) Xia LIN was supported by a project of the National Natural Science Foundation of China(Grant No.41906190) the China Postdoctoral Science Foundation(Grant No.2019M661705) the Fundamental Research Funds for the Central Universities(Grant No.2019B19014) 

主　　题：high-frequency atmospheric variability momentum fluxes buoyancy fluxes Southern Ocean circula tion Antarctic sea ice MITgcm-ECCO2 

摘      要：The relative contributions of atmospheric fluctuations on 6 h?2 d,2?8 d,and 8 d?1 month time scales to the changes in the air?sea fluxes,the SO circulation,and Antarctic sea ice are *** was found that the imposed forcing variability on the three time scales creates a significant increase in wind power input,and hence an increase of about 50%,97%,and 5%of eddy kinetic energy relative to the simulation driven by monthly forcing,***,SO circulation and the strength of the upper cell of meridional overturning circulation become *** results indicate more dominant effects of atmospheric variability on the 2?8 d time scale on the SO ***,the 6 h?2 d(2?8 d)atmospheric variability causes an increase in the total sea-ice extent,area,and volume,by about 33%,30%,and 19%(17%,20%,and 25%),respectively,relative to those in the experiment forced by monthly atmospheric *** significant sea-ice increases are caused by a cooler ocean surface and stronger sea-ice transports owing to the enhanced heat losses and air-ice stresses induced by the atmospheric variability at 6 h?2 d and 2?8 d,while the effects of the variability at 8 d?1 month are rather *** influences of atmospheric variability found here mainly result from wind *** findings in this study indicate the importance of properly resolving high-frequency atmospheric variability in modeling studies.