SARWAVE at 30YPRA Symposium
8 November, 2024

Michel Guerra (isardSAT) presented the poster ‘Ocean swell parameters retrieval using Sentinel-6 FF-SAR spectra’ in the 30 Years of Progress in Radar Altimetry Symposium (30YPRA), that took place in Montpellier, from the 2nd to the 7th of September of 2024.

The poster presented a methodology to extract swell parameters from Sentinel-6 radar altimeter data at thousands of kilometres away from storm surges using fireworks data from CFOSAT. The data was processed with an Omega-K (WK) algorithm and submitted to spectral analysis to retrieve the parameters. Along-track swell retrievals obtained better results than across-track.

Image description: Example of the methodology presented to isolate swell propagation evolution using firework plots from Ocean Data Lab (left), and co-locating them with the satellite tracks of CFOSAT-SWIM and Sentinel-6 (right).

Swell propagation from storm surges

To detect swell wavelength using altimetry data from Sentinel-6 Poseidon-4 altimeter, swell is isolated using a third-party validated source: CFOSAT-SWIM fireworks vectors grid (ovl.oceandatalab.com). Parallelly, Sentinel-6 tracks are selected by co-location with this data along the swell direction.

You can check the full poster here.

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