02 Apr 2020

Newly developed metocean data for Japan and South Korea is now available

DHI’s Metocean Data Portal has been updated with new high-quality datasets for offshore wind development.


Mesh covering Japanese waters. © DHI

To support the rapidly emerging offshore wind development in Japan and South Korea, we have extended our online Metocean Data Portal with new high-resolution quality data.    

The datasets comprise 40 years (1979-2019) of hourly wind, wave, current and water level data intended to be used in planning, feasibility, metocean engineering, basic design and pre-FEED studies. In addition, 2D spectra are also included to be used for forcing of local models or to assess swell contribution and vessel workability.

MIKE Powered by DHI modelling software was used to generate data from carefully designed, calibrated and validated high-resolution hydrodynamic and wave models forced by recognised and reanalysed atmospheric model data (ERA5 from ECMWF and CFSR from NCEP/NOAA). The spatial resolution is approximately 400-500m in areas planned for new offshore wind farms in Japanese waters.

The extensive validation of the new long-term modelled datasets is based on multiple buoys and satellite data (altimeters and scatterometers), securing accuracy and high quality. All data is available online, either on-demand or through an API for rapid access to multiple locations.

The underlying database is identical to the one used in the Netherlands supporting Dutch offshore wind development (published by RVO.nl), which is the world’s first certified web-based metocean database.