Can satellite altimetry observe coastally trapped waves  on sub-monthly timescales?

Passaro, Marcello

doi:https://doi.org/10.5194/os-21-2663-2025

Articles | Volume 21, issue 5

https://doi.org/10.5194/os-21-2663-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-21-2663-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 5

Research article

|

28 Oct 2025

Research article |

| 28 Oct 2025

Can satellite altimetry observe coastally trapped waves on sub-monthly timescales?

Marcello Passaro

Data sets

Experimental multimission gridded L4 sea level heights and velocities with SWOT AVISO https://doi.org/10.24400/527896/A01-2024.007

Model code and software

ne62rut/coastal_trapped_waves: v1.0.0 (v1.0.0) M. Passaro https://doi.org/10.5281/zenodo.17406514

Video supplement

Animation showing the sea level anomalies from the different dataset on the shelf during the main CTW event from the original signals Marcello Passaro https://github.com/ne62rut/coastal_trapped_waves/blob/main/single_event.gif

Animations showing the sea level anomalies from the different dataset on the shelf during the main CTW event from the reconstructed (first CEOF) signals Marcello Passaro https://github.com/ne62rut/coastal_trapped_waves/blob/main/single_event_reconstructed.gif

Short summary

This paper evaluates the capability of satellite altimetry to monitor coastally trapped waves in light of the latest advancements in daily gridded sea level data, including new interpolation schemes, an increased number of missions in orbit, and the incorporation of wide-swath altimetry measurements. The eastern Australian coast serves as a testbed, with validation provided by tide gauges and model data.