IMDC developed a North Sea Metocean Database to fulfil the need for reliable long-term time series and statistics of metocean for offshore engineering projects.
Collecting reliable metocean data is an essential step for many scientific research and engineering projects, e.g. metocean analysis and downtime analysis. It can be difficult with purely measurements which often contain data gaps in both space and time. This is even more challenging when the study requires long-term data for a certain large domain.
To fulfil the needs of using reliable metocean data, the IMDC’s North Sea Metocean Database has been constructed based on a long-term simulation of in-house iCSM model for 32 years from 1990 to 2021. The iCSM is a tidal surge model developed in TELEMAC-2D, focusing on the continental shelf of the North Sea. The model has been systematically calibrated and validated on water level and velocities for both ordinary and extreme events (Chu et al., 2020). The model is automatically calibrated on spatially varying bottom friction recently on the platform SALOME – Hydro with three-dimensional variational assimilation (3D-Var) (Chu et al., 2022). The model shows reliable ability to precisely reproduce the hydrodynamics in the North Sea.
IMDC’s North Sea Metocean Database provides:
Chu K., Breugem W.A., Wang L. & Decrop B. (2022). Automatic calibration of a continental shelf model of the North Sea using data assimilation algorithm. Proceedings of the of the 39th IAHR World Congress, International Association for Hydro-Environment Engineering and Research, Granada, Spain.
Chu, K., Breugem, A., Wolf, T., Decrop, B. (2020). Improvement of a continental shelf model of the North Sea. TELEMAC User Conference, Proceeding.
Below are several examples showing the maximum water level, velocity and water level percentile of 95, frequency table at Westhinder and its associated current rose.