Disentangling the relative contributions of vertical pumping and horizontal transport to water-property anomalies within eddy cores in the southern Indian OceanOA
Disentangling the relative contributions of vertical pumping and horizontal transport to water-property anomalies within eddy cores in the southern Indian Ocean
南印度洋最南端的涡旋对整个地球系统的动力学和生物地球化学过程具有重大影响.因此,厘清垂直抽吸与水平输送对涡旋中心水体性质异常的相对贡献具有重要意义.本研究提出了一种温-盐梯度比值方法("R方法"),即通过比较海水温盐的垂向梯度比值与经向梯度比值,可定量区分垂直抽吸与水平输送对温盐异常的相对贡献.本研究将该方法应用于三维Argo观测资料后发现,在南印度洋最南端区域内,观测到的涡旋中心温盐异常主要由水平输送而非垂直抽吸所主导.基于背景经向梯度的理论估算,以及按等密度面合成的结果,进一步验证了这一结论.本研究结果表明,传统假设"涡旋中心的温盐异常始终由垂直抽吸控制"并不成立.研究结果还展示了利用R方法诊断涡旋水平和垂向贡献在气候与海洋生态研究中的应用前景.
Zhan Lian;Kang Xu
Institute of Marine Science,Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention,Shantou University,Shantou,China||State Key Laboratory of Tropical Oceanography,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou,ChinaState Key Laboratory of Tropical Oceanography,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou,China||Guangdong Key Laboratory of Ocean Remote Sensing,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou,China
中尺度海洋涡旋南印度洋垂向抽吸水平输运
Mesoscale eddySouthern Indian OceanVertical pumpingHorizontal transport
《大气和海洋科学快报（英文版）》 2026 (2)
68-73,6
This work was supported by the National Natural Science Foundation of China[grant number 42176001]the State Key Laboratory of Trop-ical Oceanography,South China Sea Institute of Oceanology,Chinese Academy of Sciences[grant number LTO2106]and the STU Scientific Research Foundation for Talents[grant number NTF21009].
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