Frontogenesis and Frontolysis of a Cold Filament Driven by the Cross-Filament Wind and Wave Fields Simulated by a Large Eddy Simulation

作     者：Guojing LI Dongxiao WANG Changming DONG Jiayi PAN Yeqiang SHU Zhenqiu ZHANG Guojing LI;Dongxiao WANG;Changming DONG;Jiayi PAN;Yeqiang SHU;Zhenqiu ZHANG

作者机构：State Key Laboratory of Tropical OceanographySouth China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Shool of Marine SciencesNanjing University of Information Science and TechnologyNanjing 210044China School of Geography and EnvironmentJiangxi Normal UniversityNanchang 330022China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519080China 

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

年 卷 期：2024年第41卷第3期

页      面：509-528页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 92158204, 41506001 and 42076019) a Project supported by the Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) (Grant No. 311021005) 

主　　题：cold filament frontogenesis frontolysis large eddy simulation 

摘      要：The variations of the frontogenetic trend of a cold filament induced by the cross-filament wind and wave fields are studied by a non-hydrostatic large eddy simulation. Five cases with different strengths of wind and wave fields are *** results show that the intense wind and wave fields further break the symmetries of submesoscale flow fields and suppress the levels of filament frontogenesis. The changes of secondary circulation directions—that is, the conversion between the convergence and divergence of the surface cross-filament currents with the downwelling and upwelling jets in the filament center—are associated with the inertial oscillation. The filament frontogenesis and frontolysis caused by the changes of secondary circulation directions may periodically sharpen and smooth the gradient of submesoscale flow *** lifecycle of the cold filament may include multiple stages of filament frontogenesis and frontolysis.