摘要详情
703 / 2024-09-19 09:26:39
Dipole Structure of Vertical Velocity in the Mesoscale Eddies of upper ocean
eddy,vertical velocity
摘要录用
Mesoscale eddies accompanied by a highly variable vertical velocity that unable to be directly measured but show great importance in heat and biological material transportation, thus has been a difficulty under-explored. In this study, we analyze the vertical velocities of eddies in a high-resolution (1/32°) idealized domain based on the MITgcm model. A dipole structure of vertical velocity was found in cyclonic eddies, with downwelling occurring in the east and upwelling in the west, while anticyclonic eddies exhibit opposite characteristics. In addition, this opposite dipole pattern also appears in the composite results of eddies with the same polarity in subtropical and frontal regions, respectively. Using quasi-geostrophic omega equation, we have diagnosed and reproduce this dipole pattern and found that the beta-effect has a significant impact on it. Further numerical experiments were conducted to demonstrate the influence of sea level anomalies and background circulation. The study helps deepen the understanding of mesoscale vertical transport, and hopes to inspire further improvement.
重要日期
-
会议日期
01月14日
2025
至01月17日
2025
-
09月27日 2024
初稿截稿日期
-
12月14日 2024
注册截止日期
主办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
联系方式
- JKejing GU
- xm******@xmu.edu.cn
- +86*********
