Data supplement for manuscript Börger, L., Schindelegger, M., Zhao, M., Ponte, R. M., Löcher, A., Uebbing, B., Molines, J.-M., and Penduff, T.: Chaotic oceanic excitation of low-frequency polar motion variability, Earth System Dynamics, 16, 75–90, https://doi.org/10.5194/esd-16-75-2025. Provided are the following monthly angular momentum time series, 1995-2015: Atmospheric angular momentum: AAM_ERA_Int_monthly_1995-2015.aam Oceanic angular momentum: OAM_OCCIPUT_EnsMean_monthly_1995-2015.oam OAM_OCCIPUT_ens*_monthly_1995-2015.oam Hydrologic angular momentum: HAM_SLR_DORIS_monthly_1995-2015.asc Cryospheric angular momentum: Cryo_AM_Greenland_SLR_DORIS_monthly_1995-2015.asc Cryo_AM_Antarctica_SLR_DORIS_monthly_1995-2015.asc Gravitational attraction and loading angular momentum: GAL_SLR_DORIS_monthly_1995-2015.asc For content see ReadMe.txt. Terms of usage: If you use the OAM time series, please cite: Börger, L., Schindelegger, M., Zhao, M., Ponte, R. M., Löcher, A., Uebbing, B., Molines, J.-M., and Penduff, T.: Chaotic oceanic excitation of low-frequency polar motion variability, Earth System Dynamics, 16, 75–90, https://doi.org/10.5194/esd-16-75-2025. Bessières, L., Leroux, S., Brankart, J.M., Molines, J.M., Moine, M.P., Bouttier, P.A., Penduff, T., Terray, L., Barnier, B., Sérazin, G., 2017. Development of a probabilistic ocean modelling system based on NEMO 3.5: Application at eddying resolution. Geosci. Model Dev. 10, 1091–1106. doi:10.5194/gmd-10-1091-2017. Hogg, A.M., Penduff, T., Close, S.E., Dewar, W.K., Constantinou, N.C., Mart ́ınez-Moreno, J., 2022. Circumpolar variations in the chaotic nature of Southern Ocean eddy dynamics. J. Geophys. Res. Oceans 127, e2022JC018440. doi:10.1029/2022JC018440. Penduff, T., Bernier, B., Terray, L., Bessières, L., Sérazin, G., Gregorio, S., Brankart, J.M., Moine, M.P., Brankart, J.M., Brasseur, P., 2014. Ensembles of eddying ocean simulations for climate. CLIVAR Exchanges, Special Issue on High Resolution Ocean Climate Modelling 19, 26–29. If you use the angular momentum estimates of the other geophysical fluids, please cite: Börger, L., Schindelegger, M., Zhao, M., Ponte, R. M., Löcher, A., Uebbing, B., Molines, J.-M., and Penduff, T.: Chaotic oceanic excitation of low-frequency polar motion variability, Earth System Dynamics, 16, 75–90, https://doi.org/10.5194/esd-16-75-2025. Contact: L. Börger (lboerger@igg.uni-bonn.de)

This work was supported by the German Research Foundation (DFG, Project no. 459392861).