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La méthode utilisée pour calculer la topographie dynamique moyenne est similaire à celle utilisée dans les versions précédentes de la MDT CNES-CLS. Une description détaillée peut être trouvée dans Rio et Hernandez, 2004, Rio et al, 2011, Rio et al, 2014a. Il s'agit d'une approche en trois étapes. 
1/ Dans une première étape, une solution MDT de première approximation est calculée à partir des différences filtrées de manière optimale entre une surface moyenne de la mer (MSS) altimétrique et un modèle de géoïde. 
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3/ dans la troisième étape, en utilisant une méthode d'analyse objective multivariée, l'estimation synthétique des hauteurs moyennes et des vitesses moyennes sont combinées pour effectuer une première ébauche de la MDT.

Références bibliographiques
- Pour la MDT-CNES-CLS18: Mulet, S., Rio, M.-H., Etienne, H., Artana, C., Cancet, M., Dibarboure, G., Feng, H., Husson, R., Picot, N., Provost, C., and Strub, P. T.: The new CNES-CLS18 Global Mean Dynamic Topography, Ocean Sci., 17, 789-808, https://doi.org/10.5194/os-17-789-2021, 2021 

- Pour les MDT CMEMS 2020: Jousset S., Aydogdu A., Ciliberti S., Clementi E., Escudier R., Jansen E., Lima L., Menna M., Mulet S., Nigam T., Sanchez A., Tarry D. R., Pascual A., Peneva E., Poulain P.-M. and Taupier-Letage I. (2022). New Mean Dynamic Topography of the Mediterranean and Black Seas from altimetry, gravity and in-situ data. In preparation.</gco:CharacterString>
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