Preprints
https://doi.org/10.5194/gmd-2022-165
https://doi.org/10.5194/gmd-2022-165
Submitted as: development and technical paper
21 Jul 2022
Submitted as: development and technical paper | 21 Jul 2022
Status: this preprint is currently under review for the journal GMD.

Global seamless tidal simulation using a 3D unstructured-grid model

Yinglong Joseph Zhang1, Tomas Fernandez-MontBlanc2, William Pringle3, Hao-Cheng Yu1, Linlin Cui1, and Saeed Moghimi4 Yinglong Joseph Zhang et al.
  • 1Center for Coastal Resource Management, Virginia Institute of Marine Science, College of William & Mary, Gloucester Point, 23062, USA
  • 2Universidad de Cádiz, 11003, Spain
  • 3Environmental Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA
  • 4NOAA National Ocean Service, Silver Spring, MD, 20910, USA

Abstract. We present a new 3D unstructured-grid global ocean model to study both tidal and non-tidal processes, with a focus on the total water elevation. Unlike existing global ocean models, the new model resolves estuaries and rivers down to ~8m without the need for grid nesting. The model is validated with both satellite and in-situ observations for elevation, temperature, and salinity. Tidal elevation solutions have a mean complex RMSE of 4.2 cm for M2 and 5.4 cm for combined 5 other major frequencies in the deep ocean. The non-tidal residual assessed by a tide gauge dataset (GESLA) has a mean RMSE of 7 cm. For the first time ever, we demonstrate the potential for seamless simulation, on a single mesh, from the global ocean into a few estuaries along the US west coast. The model is able to accurately capture the total elevation, and qualitatively capture the challenging salinity intrusion processes in the Columbia River. The model can therefore potentially serve as the backbone in a global tide-surge and compound flooding forecasting framework.

Yinglong Joseph Zhang et al.

Status: open (until 15 Sep 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Yinglong Joseph Zhang et al.

Yinglong Joseph Zhang et al.

Viewed

Total article views: 195 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
144 47 4 195 4 3
  • HTML: 144
  • PDF: 47
  • XML: 4
  • Total: 195
  • BibTeX: 4
  • EndNote: 3
Views and downloads (calculated since 21 Jul 2022)
Cumulative views and downloads (calculated since 21 Jul 2022)

Viewed (geographical distribution)

Total article views: 172 (including HTML, PDF, and XML) Thereof 172 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 08 Aug 2022
Download
Short summary
Simulating global ocean from deep basin to coastal areas is a daunting task but is important for disaster mitigation efforts. We present a new 3D global ocean model on flexible mesh to study both tidal and non-tidal processes and total water prediction. We demonstrate the potential for ‘seamless’ simulation, on a single mesh, from the global ocean into a few estuaries along the US west coast. The model can serve as the backbone in a global tide-surge and compound flooding forecasting framework.