Three-Dimensional Climatological Structures of the Arabian Sea Eddies and Eddy-Induced Flux  

作　　者：LIN Xinyu QIU Yun NI Xutao LIN Wenshu AUNG Cherry 

机构地区：[1]Third Institute of Oceanography,Ministry of Natural Resources,Xiamen 361005,China [2]Laboratory for Regional Oceanography and Numerical Modeling,Laoshan Laboratory,Qingdao 266061,China [3]Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China [4]Fujian Provincial Key Laboratory of Marine Physical and Geological Processes,Xiamen 361005,China [5]Marine Science Department,Myeik University,Tanintharyi 14052,Myanmar

出　　处：《Journal of Ocean University of China》2023年第4期874-885,共12页中国海洋大学学报（英文版）

基　　金：supported by grants from the National Natural Science Foundation of China(No.42130406);the Scientific Research Foundation of Third Institute of Oceanography,MNR(Nos.2022027 and 2023018);the Deep Sea Habitats Discovery Project of China Deep Ocean Affairs Administration(No.DY-XZ-04);the Asian Countries Maritime Cooperation Fund(No.99950410);the Global Change and Air-Sea Interaction II(Nos.GASI-04-WLHY-01 and GASI-01-SIND-STwin).

摘　　要：This study explores the spatial structure and transport characteristics of eddies in the Arabian Sea(AS)using Argo profiles and satellite measurements.The majority of eddies occur in the northern AS,especially along its northeastern boundary.In contrast,the western AS had a relatively higher eddy kinetic energy compared to the eastern part.Particularly,the strongest energetic eddies were present in the Somali Current system.The composite results revealed the evident thermohaline anomalies caused by cyclonic eddies(CEs)and anticyclonic eddies(AEs)in the upper 300m layers.The anomalous temperature structure within CEs and AEs showed a dominant dipole structure in the near-surface layer and a monopole structure below,with maximum temperature anomalies of approximately−0.8℃and+1.0℃located at depths of 100–150m,respectively.The composited salinity structures for CEs and AEs exhibited monopole vertical structures and sandwich-like patterns.For AEs,large positive salinity anomalies occurred at subsurface layers of 60–180 m with a peak value of about 0.07,and weak negative values were observed above 60m and below 180 m.A similar vertical structure but with an opposite sign operates for CEs.The composited CE and AE caused an equatorward salt flux with values of−8.1×10^(4)and−2.2×10^(4)kg s^(−1),respectively.CEs caused an equatorward heat flux of−7.7×10^(11)W,and AEs induced a poleward flux of 1.5×1011 W.

关 键 词：Arabian Sea mesoscale eddy thermohaline structure heat and salt flux 

分 类 号：P732.6[天文地球—海洋科学]