Ocean Science
Ocean Science
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Articles | Volume 21, issue 3
Articles | Volume 21, issue 3
https://doi.org/10.5194/os-21-931-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-21-931-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 3
Research article
 | 
19 May 2025
Research article |  | 19 May 2025

Enhanced resolution capability of SWOT sea surface height measurements and their application in monitoring ocean dynamics variability

Yong Wang, Shengjun Zhang, and Yongjun Jia

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Cited articles

AVISO: SARAL/AltiKa geophysical data record (SGDR), AVISO [data set], https://www.aviso.altimetry.fr/en/data/products/sea-surface-height-products/global/gdr-igdr-and-ogdr.html, last access: 19 May 2025a. 
AVISO: Sentinel-3A Along-track Sea Level Anomalies (L2P), AVISO [data set], https://www.aviso.altimetry.fr/en/data/products/sea-surface-height-products/global/along-track-sea-level-anomalies-l2p.html, last access: 19 May 2025b. 
AVISO/DUACS: SWOT level‐3 SSH expert (v1.0), CNES [data set], https://doi.org/10.24400/527896/A01-2023.018, 2025. 
Bas, A. B. V., Lenain, L., Cornuelle, B. D., Gille, S. T., and Mazloff, M. R.: A broadband view of the sea surface height wavenumber spectrum, Geophys. Res. Lett., 49, e2021GL096699, https://doi.org/10.1029/2021GL096699, 2022. 
Callies, J. and Wu, W.: Some expectations for submesoscale sea surface height variance spectra, J. Phys. Oceanogr., 49, 2271–2289, https://doi.org/10.1175/JPO-D-18-0272.1, 2019. 
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The distance-weighted averaging method was used to calculate the along-orbit sea surface height (SSH) wavenumber spectra of four satellites and to evaluate the along-track resolution capability of the four satellites. The results show that the resolution of Surface Water and Ocean Topography (SWOT) in the Kuroshio region is 25 km, which is twice the resolution of conventional satellites. A parameter was defined using the cross-power-spectrum approach and used to analyse the global ocean.
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