OS005-01
Advances to Global Unstructured Mesh Storm Tide Modeling for Operational Forecasting

Monday, 7 December 2020: 10:34
Virtual
William Pringle1, Damrongsak Wirasaet2, María Teresa Contreras Vargas3, Joannes J Westerink4, Sergey V Vinogradov5, Yuji Funakoshi6, Edward Payson Myers III7, Gregory N Seroka8, Saeed Moghimi5, Jaime Calzada9, Liujuan Tang10 and Shachak Peeri11, (1)Argonne National Laboratory, Environmental Science Division, Lemont, IL, United States, (2)University of Notre Dame, Notre Dame, IN, United States, (3)University of Notre Dame, Department of Civil & Environmental Engineering & Earth Sciences, Notre Dame, IN, United States, (4)Univ Notre Dame, Notre Dame, IN, United States, (5)NOAA National Ocean Service, Silver Spring, MD, United States, (6)University Corporation for Atmospheric Research, Boulder, MD, United States, (7)NOAA, NOS/OCS, Silver Spring, MD, United States, (8)Rutgers University, Marine and Coastal Sciences, New Brunswick, NJ, United States, (9)NOAA National Ocean Service, Silver Spring, United States, (10)PMEL/NCTR, Seattle, WA, United States, (11)NOAA/NOS/OCS, Silver Spring, MD, United States
Recorded Presentation
Abstract:
We detail some developments in shallow water finite-element modeling and automatic unstructured mesh generation on the Earth to more accurately and efficiently simulate global storm tides with seamless mesh refinement in storm landfall locations and/or in strategic regions of concern. These developments have facilitated the upgrade of NOAA’s ADCIRC-based ESTOFS model to a fully global system with regional mesh refinement along US continental and island coastlines. In this talk we present on the work related to: 1) improving the numerical treatment of the generalized wave continuity equation on the spherical Earth; 2) improving the implicit treatment of the pressure gradient term to allow for larger time steps; 3) sensitivity tests to global unstructured mesh design using automatically generated triangular meshes; 4) sensitivity tests to local refinement at the coastal landfall locations of two intense storms (Hurricane Katrina and Super Typhoon Haiyan); and 5) mesh design and construction of the NOAA’s new Global ESTOFS (G-ESTOFS) model. Last, we include our vision of how we can further develop G-ESTOFS to better support navigational and disaster mitigation efforts.

ESTOFS: Extratropical Surge & Tide Operational Forecast System
NOAA: National Oceanic and Atmospheric Administration
ADCIRC: ADvanced ocean CIRCulation model


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