The project CryoSat+ REGINA (2013-2015; ESA lead: Mark Drinkwater) aimed at the determination of the elevation rate correction for CryoSat-2 data, reflecting the process of glacial-isostatic adjustment (GIA) in Antarctica. To achieve this aim, the REGINA team consisting of five university / non-university partners collected multiple space-geodetic observations (gravity, altimetry, GPS), re-processed the data and accurately analyzed them for their temporal linear trends. Numerical solid Earth modelling provided elastic and viscoelastic response functions to ice-load changes for an ensemble of Earth structures suitable for East and West Antarctica. As an extreme case, we assessed the effect of a low-viscous ductile layer within the elastic lithosphere. In a novel approach, the team combined the refined satellite data sets using the load response functions, allowing the separation of present-day ice-mass change signals from those arising from GIA. The identified GIA signatures were then validated and their impact on CryoSat-2 elevation rates (and GRACE mass balances) were determined. The project was able to explain large bedrock uplift rates in the Amundsen Sea Embayment (~ cm/year) with a strong GIA, enabled by presence of a low viscosity structure in West Antarctica. In summary, the REGINA project successfully combined various types of satellite data, while connecting a team of experts ranging from solid Earth to cryosphere sciences. www.regina-science.eu>/p>