Submesoscale Dynamic Processes in the South China Sea  

作　　者：Zhiwei Zhang 

机构地区：[1]Frontiers Science Center for Deep Ocean Multispheres and Earth System(FDOMES)and Physical Oceanography Laboratory/Key Laboratory of Ocean Observation and Information of Hainan Province,Sanya Oceanographic Institution,Ocean University of China,Qingdao/Sanya,China [2]Laoshan Laboratory,Qingdao,China

出　　处：《Ocean-Land-Atmosphere Research》2024年第1期281-297,共17页海洋-陆地-大气研究(英文)

基　　金：supported by the National Natural Science Foundation of China(42222601,42076004,and 92258301);the National Key Research and Development Program of China(2022YFC3105003);the“Taishan”Talents program(tsqn202103032);the Shandong Provincial Natural Science Foundation(ZR2023JQ013).

摘　　要：The South China Sea(SCS)is the largest marginal sea in the northwestern Pacific,and it is known for its complex multiscale dynamic processes,including basin-scale circulations,mesoscale eddies,submesoscale processes(submesoscales),and small-scale internal gravity waves.Compared with dynamic processes of other scales,submesoscales are a relatively new dynamic concept;they have gained rapidly increasing attention in recent decades due to their uniquely important roles in oceanic dynamics and biogeochemistry.Considerable progress on submesoscales has been achieved by the SCS regional oceanography community due to improvements in observation and simulation capabilities in the past decade.This paper comprehensively reviews recent research advances on the dynamic aspects of submesoscales in the SCS,including submesoscale resolving/permitting observations and simulations;the general characteristics,spatiotemporal variations,and generation mechanisms of submesoscales;and the roles of submesoscales in energy cascade and vertical tracer transport and the associated parameterizations.The most important advances are as follows:(a)Novel submesoscale observations have been made in the SCS,such as through submesoscale and mesoscale nested mooring arrays.(b)Findings have shown that the spatiotemporal characteristics and generation mechanisms of submesoscales in the SCS are regionally dependent.(c)A generation mechanism called mixed transitional layer instability(MTI)was proposed,and its strength is significantly modulated by strain-induced frontogenesis.(d)A new parameterization of submesoscale vertical buoyancy flux was developed based on the mechanism of MTI modulated by frontogenesis.In addition to reviewing recent advances in this field,this paper presents research prospects on SCS submesoscales.

关 键 词：MESOSCALE SOUTH transitional 

分 类 号：P73[天文地球—海洋科学]