Evaluation of SCHISM for 3D Circulation Modeling in New York Harbor: Integration with NOAA’s Unified Forecast System

SCHISM (Semi-implicit Cross-scale Hydroscience Integrated System Model) is an open-source model for simulating 3D baroclinic circulation across creek-lake-river-estuary-shelf-ocean scales. Efforts are underway to evaluate SCHISM as a component of NOAA’s Unified Forecast System (UFS). The evaluation process tests SCHISM's setup, usage, and performance for the New York Harbor area over two 90-day periods on the Texas Advanced Computing Center’s Frontera supercomputer. A high-resolution unstructured mesh was generated to conform to the complex coastline geometry and bathymetry, enhancing modeling accuracy.

The first phase of testing compares model-simulated and observed major tidal constituents (M2, S2, N2, and K1) at 23 National Ocean Service and Center for Operational Oceanographic Products and Services stations around New York Harbor. The second phase involves evaluating water levels, current speeds and directions, temperature, and salinity, along with corresponding error estimations (Absolute Error, Root Mean Square Error, and Complex Root Mean Square Error). The third phase assesses the model’s performance using a 3D configuration coupled with wave processes within the UFS Coastal Application. Here, we present the results of the model performance evaluation, descriptions of the processes involved, and the challenges in mesh generation, model setup, and application.

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See more of: Coastal Modeling and Evaluation for the Unified Forecast System (UFS) and Other Applications I
See more of: 23rd Symposium on the Coastal Environment

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