IFG/Downloads/Ocean tides

Gravitational effect of ocean and atmospheric tides

FES2014b at 2023-07-01 0:00 UTC

Here we provide ocean and atmospheric tide models for easy consideration in precise satellite orbit determination. The gravitational effect of tides including loading effects at a given time can be represented as corrections to the Stokes coefficients of a spherical harmonics expansion. This requires not only an atlas of selected major tidal consitutents but also a calculation rule to complement all frequency lines. This can be done by interpolation using an admittance matrix. For this purpose, a file format and an algorithm are defined here. All required information can be found in the README. We provide also reference implementations in MATLAB, Python and Fortran.

The following models are currently available

  • FES2014b (Lyard et al. 2021)
  • EOT20 (Hart-Davis et al. 2021)
  • EOT11a (Savcenko et al. 2012)
  • TiME22 (Sulzbach et al. 2022)
  • TiME22 atmospheric tides (Balidakis et al. 2022)
  • ... more models will be published in the future.

Please cite the models accordingly and respect their license.


Conversion of other tide models from gridded data

If you want to convert your own ocean tide model from NETCDF data you can use our GROOPS software (https://github.com/groops-devs/groops). A example script with description is provided at our FTP-Server.


For FES2014, please cite: "FES2014 was produced by Noveltis, Legos and CLS and distributed by Aviso+, with support from Cnes (https://www.aviso.altimetry.fr/)".

Balidakis, K., Sulzbach, R., Shihora, L., Dahle, C., Dill, R., & Dobslaw, H. (2022). Atmospheric contributions to global ocean tides for satellite gravimetry. Journal of Advances in Modeling Earth Systems, 14, e2022MS003193. https://doi.org/10.1029/2022MS003193

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

Hart-Davis Michael G., Piccioni Gaia, Dettmering Denise, Schwatke Christian, Passaro Marcello, Seitz Florian (2021). EOT20: a global ocean tide model from multi-mission satellite altimetry. Earth System Science Data, 13 (8), 3869-3884. https://doi.org/10.5194/essd-13-3869-2021

Lyard, F. H., Allain, D. J., Cancet, M., Carrère, L., and Picot, N.: FES2014 global ocean tide atlas: design and performance, Ocean Sci., 17, 615–649, https://doi.org/10.5194/os-17-615-2021, 2021

Savcenko, Roman; Bosch, Wolfgang; Dettmering, Denise; Seitz, Florian (2012): EOT11a - Global Empirical Ocean Tide model from multi-mission satellite altimetry, with links to model results. PANGAEA, https://doi.org/10.1594/PANGAEA.834232

Savcenko, Roman; Bosch, Wolfgang (2012): EOT11a - Empirical Ocean Tide Model from Multi-Mission Satellite Altimetry. Deutsches Geodätisches Forschungsinstitut (DGFI), München, 89, 49 pp, hdl:10013/epic.43894.d001

Sulzbach, Roman; Balidakis, Kyriakos; Dobslaw, Henryk; Thomas, Maik (2022): TiME22: Periodic Disturbances of the Terrestrial Gravity Potential Induced by Oceanic and Atmospheric Tides. GFZ Data Services. https://doi.org/10.5880/GFZ.1.3.2022.006


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