Validation of Lagrangian Fluid Particle Trajectories Based on Altimeter Data

Liu Yi-fan; XIA Qiong; CHEN Ze-kai

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Liu Yi-fan，XIA Qiong，CHEN Ze-kai. Validation of Lagrangian Fluid Particle Trajectories Based on Altimeter Data[J]. Haiyang Xuebao，2025, 47(x)：1–9

Citation:

Liu Yi-fan，XIA Qiong，CHEN Ze-kai. Validation of Lagrangian Fluid Particle Trajectories Based on Altimeter Data[J]. Haiyang Xuebao，2025, 47(x)：1–9

Citation:

Liu Yi-fan，XIA Qiong，CHEN Ze-kai. Validation of Lagrangian Fluid Particle Trajectories Based on Altimeter Data[J]. Haiyang Xuebao，2025, 47(x)：1–9

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Validation of Lagrangian Fluid Particle Trajectories Based on Altimeter Data

1.
Department of Marine Technology, College of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, China
2.
Key Laboratory of Space Ocean Remote Sensing and Application, MNR, Beijing 100081, People’s Republic of China

Received Date: 2024-12-04
Rev Recd Date: 2025-04-03

Available Online: 2025-05-22

Abstract

Abstract

Satellite altimetry data provides large-scale, long-term stable ocean flow field information, but its low resolution may affect the accuracy of Lagrangian fluid particle trajectories calculated from it. In this study, a comparative approach using buoy trajectories and chlorophyll structure evolution was employed to systematically assess the reliability of Lagrangian fluid particle trajectories derived from altimetry data.The results indicate that this method effectively characterizes mesoscale oceanic motions, with fluid particle trajectories closely matching the overall trends of actual buoy trajectories, particularly demonstrating strong tracking capability in rotational motion patterns. However, the sensitivity of these trajectories to mesoscale and sub-mesoscale motions is relatively low, with slower movement speeds making it difficult to accurately capture short-period perturbations.Further analysis reveals that fluid particle trajectories can reliably track the evolution of chlorophyll structures over a 30-day period, suggesting their applicability in mesoscale oceanic studies. This research provides a scientific basis for the application of altimetry data in Lagrangian analysis and offers valuable insights for the study of ocean circulation and ecological processes.
- Lagrangian method,
- chlorophyll structure,
- trajectory validation,
- buoy,
- altimeter data

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References(21)

References

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