EOT20 - A global Empirical Ocean Tide model from multi-mission satellite altimetry

EOT20 is the latest in a series of global ocean tide models developed at DGFI-TUM. EOT20 is created using residual tidal analysis of multi-mission altimetry data from the period of 1992 to 2019. Eleven satellite altimetry missions are used and the FES2014b tide model used as the reference model for the residual tidal analysis. The model extends throughout the global ocean, with EOT20 ranging from 66°S to 66°N with FES2014b being used to fill in the higher latitudes. The model provides data about the amplitudes and phases as well as the real and imaginary components of seventeen tidal constituents for the global ocean. These tidal constituents are: 2N2, J1, K1, K2, M2, M4, MF, MM, N2, O1, P1, Q1, S1, S2, SA, SSA and T2. Both the ocean and load tide atlases are provided with a spatial resolution of 1/8 degree. 

Two versions of the dataset are provided here. The final EOT20 version is provided open access and should be used for all applications. In addition, an old version is available on request. This version was the initial version available for download until July 1st, 2021. During the review process, it turned out that this version has issues within the netCDF4 file conversion and should not be used for any application.



Physical oceanography


Ocean Tides, Satellite Altimetry, Sea Level, Oceanography


90N, -90S, 180E, -180W


2 GoNetCDFProcessed data
EOT20 old version (corrupted)
2 GoNetCDFProcessed data
How to cite
Hart-Davis Michael, Piccioni Gaia, Dettmering Denise, Schwatke Christian, Passaro Marcello, Seitz Florian (2021). EOT20 - A global Empirical Ocean Tide model from multi-mission satellite altimetry. SEANOE. https://doi.org/10.17882/79489

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