Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 18, issue 3
Articles | Volume 18, issue 3
https://doi.org/10.5194/essd-18-2285-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-2285-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 3
Data review article
 | 
27 Mar 2026
Data review article |  | 27 Mar 2026

New global mean dynamic topography CNES-CLS-22 combining drifters, hydrography profiles and high frequency radar data

Solène Jousset, Sandrine Mulet, Eric Greiner, John Wilkin, Lien Vidar, Léon Chafik, Roshin Raj, Antonio Bonaduce, Nicolas Picot, and Gérald Dibarboure

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Short summary
Satellite altimetry has revolutionized ocean observation, making it possible to track sea level with very good spatio-temporal coverage. However, only sea level anomalies are retrieved; to monitor the entire ocean signal, mean dynamic topography (MDT) must be added to these anomalies. In this study, an evaluation of the CNES-CLS22 MDT shows significant improvements in the Arctic. Over the globe, this new solution represents an incremental update to previous CNES-CLS18 MDT.
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