Altimetry-derived ocean tides in the Arctic: a Foxe Basin case study ...

• Main Authors: Hart-Davis, Michael, Anderesen, Ole, Ray, Richard, Dettmering, Denise
• Format: Conference Object
• Language: unknown
• Published: CNES 2023
• Subjects: Arctic; Foxe Basin
• Online Access: https://dx.doi.org/10.24400/527896/a03-2023.3762; https://ostst.aviso.altimetry.fr/programs/abstracts-details.html?tx_ausyclsseminar_pi2[objAbstracte]=3762&cHash=X

Tides in the Polar regions are complicated to accurately determine due to limited coverage either from satellite altimetry or in-situ observations and due to poorly resolved bathymetry products in the region. Although several altimeters reach high latitudes, their orbits are sun-synchronous and do not allow for the estimation of the full tidal signal. The continued orbiting of Cryosat-2 provides valuable insight into the ocean tides in the polar regions, thanks to its ~28-day pseudo-cycle. This data availability has resulted in advances in the accuracy of altimetry-derived models and a deeper understanding of the spatial variability of tides in the Arctic. Modern global tide models, which do not incorporate Cryosat-2 data, contain relatively large errors in the Foxe Basin. The Foxe Basin has an extensive tidal range with available nearby tide gauges demonstrating tidal ranges between 1.5 and 2 meters and models showing errors exceeding 10 cm for the major constituents. The Basin is very shallow and is ...