Hydrodynamic model of the Southern North Sea: MIKE21 model setup, outputs and observation data

MIKE 21 Flow Model FM is a hydrodynamic modeling system based on a flexible mesh approach, used for oceanographic, coastal, and estuarine applications. This repository includes a highly simplified model setup and 2-year simulation results for a region in the Southern North Sea, as well as observational data and code for model validation.

This dataset is part of the WaterBench series by DHI, supporting open research on water-related challenges. It is intended for educational and research purposes only, such as model validation, parameter calibration, and machine learning applications. The model mesh has been reduced from over 150,000 to ~8,000 elements compared to our operational model, and inputs are coarser in time and space, resulting in increased error (e.g., typical RMSE in water levels increases from ~8 cm to 15–20 cm). Results must not be used for decision-making.

Files:

README: Description of dataset with details on citations, data processing, and background information.

WaterBench-MIKE21HD-SouthernNorthSea.zip: model setup, input data (e.g., boundary conditions, wind), observational data, and code for data exploration and model validation.

MIKE21HD-SouthernNorthSea-output.zip: 2-years model result files `Area.dfsu` and `Points.dfs0` (~4 GB).

MIKE21HD-SouthernNorthSea-input.zip: wind input data for the model(~0.5 GB).