edu.ucar.opensky::articles:25416 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T22:44:52.752427 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7j67mns https://doi.org/10.1594/PANGAEA.905295 https Related Dataset #1 An update to Greenland and Antarctic ice sheet topography, cavity geometry, and global bathymetry (RTopo-2.0.4) https://doi.org/10.5285/836f016a-33be-6ddc-e053-6c86abc0788e https Related Dataset #2 The GEBCO_2019 Grid - a continuous terrain model of the global oceans and land. https://doi.org/10.5281/zenodo.5563024 https Related Other #1 Data Supporting Dissipation and Bathymetric Sensitivities in an Unstructured Mesh Global Tidal Model Dissipation and bathymetric sensitivities in an unstructured mesh global tidal model 2022-05-01T00:00:00Z publication https://n2t.org/ark:/85065/d7j67mns https://doi.org/10.1029/2021JC018178 Blakely, C. P. author Ling, G. author Pringle, W. J. author Contreras, M. T. author Wirasaet, D. author Westerink, J. J. author Moghimi, Saeed author Seroka, G. author Shi, L. author Myers, E. author Owensby, M. author Massey, C. author UCAR/NCAR - Library publisher The mechanisms and geographic distribution of global tidal dissipation in barotropic tidal models are examined using a high resolution unstructured mesh finite element model. Mesh resolution varies between 2 and 25 km and is especially focused on inner shelves and steep bathymetric gradients. Tidal response sensitivities to bathymetric changes are examined to put into context response sensitivities to frictional processes. We confirm that the Ronne Ice Shelf dramatically affects Atlantic tides but also find that bathymetry in the Hudson Bay system is a critical control. We follow a sequential frictional parameter optimization process and use TPXO9 data-assimilated tidal elevations as a reference solution. From simulated velocities and depths, dissipation within the global model is estimated and allows us to pinpoint dissipation at high resolution. Boundary layer dissipation is extremely focused with 1.4% of the ocean accounting for 90% of the total. Internal tide friction is much more distributed with 16.7% of the ocean accounting for 90% of the total. Often highly regional dissipation can impact basin-scale and even ocean wide tides. Optimized boundary layer friction parameters correlate very well with the physical characteristics of the locality with high friction factors associated with energetic tidal regions, deep ocean island chains, and ice covered areas. Global complex M-2 tide errors are 1.94 cm in deep waters. Total global boundary layer and internal tide dissipation are estimated, respectively, at 1.83 and 1.49 TW. This continues the trend in the literature toward attributing more dissipation to internal tides. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation