刘婷甄,郑少军,严厉

• 1:广东海洋大学海洋与气象学院/近海海洋变化与灾害预警实验室
• 2:广东海洋大学/广东省高等学校陆架及深远海气候
• 3:资源与环境重点实验室
• 4:自然资源部空间海洋遥感与应用重点实验室

摘要(Abstract)：

【目的】了解南大洋中尺度涡的活动规律。【方法】利用AVISO提供的1993—2020年中尺度涡轨迹数据集META3.2DT，通过合成分析和能量分析，探讨南大洋寿命为30 d以上中尺度涡出现数（EON）的季节变化及动力机制。【结果和结论】南大洋EON存在显著季节变化，即夏季多（2月达到最大值）春季少（9月达到最小值），且与涡动能季节变化紧密相关。涡旋的振幅、转速和强度呈现出与EON大致相反的季节变化，即春季大夏季小。合成分析表明，风场的季节变化引起“涡旋消亡”强度的变化，进而影响EON季节变化。能量分析表明，EON季节变化受正压不稳定的调控。

关键词(KeyWords)： 中尺度涡;季节变化;涡旋活动;南大洋;涡动能

Abstract:

Keywords:

基金项目(Foundation): 广东省普通高校创新团队项目（2019KCXTF021）;; 广东省冲一流专项资金项目（080507032201,080503032101,231420003）;; 自然资源部海洋环境信息保障技术重点实验室开放基金课题（2019）;; 广东海洋大学科研启动经费资助项目（R18023,R19061）

作者(Author): 刘婷甄,郑少军,严厉

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