5779 20220502083249.0 10.1007/s00190-022-01609-w DOI SCART-2022-0060 Sulzbach, R. Modeling Gravimetric Signatures of Third-Degree Ocean Tides and their Detection in Superconducting Gravimeter Records 2022 We employ the barotropic, data-unconstrained ocean tide model TiME to derive an atlas for degree-3 tidal constituents including monthly to terdiurnal tidal species. The model is optimized with respect to the tide gauge data set TICON-td that is extended to include the respective tidal constituents of diurnal and higher frequencies. The tide gauge validation shows a root-mean-square (RMS) deviation of 0.9–1.3 mm for the individual species. We further model the load tide-induced gravimetric signals by two means (1) a global load Love number approach and (2) evaluating Greens-integrals at 16 selected locations of superconducting gravimeters. The RMS deviation between the amplitudes derived using both methods is below 0.5 nGal (1 nGal =0.01 nms-2) when excluding near-coastal gravimeters. Utilizing ETERNA-x, a recently upgraded and reworked tidal analysis software, we additionally derive degree-3 gravimetric tidal constituents for these stations, based on a hypothesis-free wave grouping approach. We demonstrate that this analysis is feasible, yielding amplitude predictions of only a few 10 nGal, and that it agrees with the modeled constituents on a level of 63–80% of the mean signal amplitude. Larger deviations are only found for lowest amplitude signals, near-coastal stations, or shorter and noisier data sets. NO Third-degree ocean tides Tidal potential Superconducting gravimeters Membach Wziontek, H. Hart-Davis, M. Dobslaw, H. Scherneck, H.-G. Van Camp, M. Omang, O.C.D. Antokoletz, E.D. Voigt, C. Dettmering, D. Thomas, M. Journal of Geodesy 96 2022 35 michel.vancamp@observatoire.be https://doi.org/10.1007/s00190-022-01609-w published in REFERD