Ole Andersen (DTU Space, Denmark); Richard Ray (NASA, USA); Maximilian Lippert (Technical University of Munich, Germany); Edward Zaron (Oregon State University, USA); Rasmus Arildsen (DTU Space, Denmark); Antonio Bonaduce (NERSC, Norway); Christian Schwatke (Technical University of Munich, Germany); Denise Dettmering (Technical University of Munich, Germany)

The SWIFT-CORE science team project will present findings on the observation of tides in complex coastal and polar regions from SWOT. Historically, coastal and polar regions have been a challenge for global tide models, due to the limited spatial coverage of conventional satellite altimetry measurements. As SWOT provides unprecedented spatial coverage at high resolution, this has opened the door to the investigation of tidal physics within coastal regions such as estuaries and inlets, as well as challenging polar regions such as within the marginal ice zone and within fjords. The first part of the results to be discussed here will evaluate the estimation of tidal constituents across the land-ocean-aquatic continuum. Here, regions are studied that have historically been challenging for conventional satellite altimetry-based models, including estuaries and archipelagos. The observation of tidal dynamics within fjords is also presented, focusing on Sognefjord in Norway. Fjords are regions where the tidal dynamics are one of the key drivers of variability, but typically, tide models do not provide estimations within these regions due to insufficient spatial resolution and rely on interpolation techniques and in situ measurements. Here, results for the Sognefjord will be presented from SWOT products and contrasted with the latest global tide models and in situ measurements. Finally, a look at the estimation of tides in the polar regions, the Arctic and Antarctic regions, from SWOT ocean products will be discussed.