Global Ocean Tide induced Mass-redistribution for Satellite Gravimetry

The Tidal Model forced by Ephemerides (Thomas et al., 2001; Weis et al., 2008) is a purely hydrodynamic, barotropic tidal simulation. After recent updates of bathymetric data, dissipation channels and the handling of Self-Attraction and Loading it is now possible to derive M2 tidal-dynamics (the main lunar tide), that deviate from open ocean tide-gauge measurements by 4.84 cm root-mean-square (Sulzbach et al., 2021). The obtained mass-redistribution patterns of ocean and solid earth are transformed into Stokes Coefficients ( and can be used for satellite gravimetric purposes. They are provided in resemblance to the AOD1B-format.

Reference Paper

  • Thomas, M., Su╠łndermann, J., & Maier-Reimer, E. (2001). Consideration of ocean tides in an OGCM and impacts on subseasonal to decadal polar motion excitation. Geophys. Res. Lett.. doi: 10.1029/2000GL012234
  • Weis, P., Thomas, M., & Su╠łndermann, J. (2008). Broad frequency tidal dynamics simulated by a high-resolution global ocean tide model forced by ephemerides, J. Geophys. Res. Ocean., 113 (10). doi: 10.1029/2007JC004556 (link:
  • Sulzbach, R., Dobslaw, H., Thomas, M. (2021). High-Resolution Numerical Modeling of Barotropic Global Ocean Tides for Satellite Gravimetry. Journal of Geophysical Research: Oceans. 126,
  • Sulzbach, R., Dobslaw, H., Thomas, M. (2021): Mass variations induced by ocean tide oscillations (TiME21). V. 1.0. GFZ Data Services.


M. Sc. Roman Lucas Sulzbach
Earth System Modelling

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