RT journal article T1 Global seamless tidal simulation using a 3D unstructured-grid model (SCHISM v5.10.0) A1 Zhang, Y. Joseph A1 Fernández Momblant, Tomás A1 Pringle, William A1 Yu, Hao-Cheng A1 Cui, Linlin A1 Moghimi, Saeed A2 Ciencias de la Tierra AB We present a new 3D unstructured-grid globalocean model to study both tidal and nontidal processes, witha focus on the total water elevation. Unlike existing globalocean models, the new model resolves estuaries and riversdown to ∼ 8 m without the need for grid nesting. The modelis validated with both satellite and in situ observations for elevation, temperature, and salinity. Tidal elevation solutionshave a mean complex root-mean-square error (RMSE) of4.2 cm for M2 and 5.4 cm for all five major constituents inthe deep ocean. The RMSEs for the other four constituents,S2, N2, K1, and O1, are, respectively, 2.05, 0.93, 2.08, and1.34 cm). The nontidal residual assessed by a tide gaugedataset (GESLA) has a mean RMSE of 7 cm. For the firsttime ever, we demonstrate the potential for seamless simulation on a single mesh from the global ocean into severalestuaries along the US West Coast. The model is able to accurately capture the total elevation, even at some upstreamstations. The model can therefore potentially serve as thebackbone of a global tide surge and compound flooding forecasting framework. PB Copernicus Publications SN 1991-9603 YR 2023 FD 2023 LK http://hdl.handle.net/10498/32790 UL http://hdl.handle.net/10498/32790 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 10-may-2026