Representation of North Sea Wind Conditions in the DOWA and the EMD-ConWX European Mesoscale Dataset

The creation of the Dutch Offshore Wind Atlas (DOWA) was part of a joint project with ECN part of TNO, Whiffle, and KNMI. The DOWA is a wind atlas based on a 10-year reanalysis, which is an hourly description of the state of the atmosphere using measurements and atmospheric (weather) models. The DOWA attempts to improve upon the ability of the...

Understanding of the Offshore Wind Resource up to High Altitudes (≤ 315 m)

In order to better understand North Sea wind conditions, analyses were performed on wind speed and direction measurements by light-detection and ranging (lidar) at eight offshore measurement locations distributed throughout the North Sea. Lidar enabled measurement of the North Sea wind conditions at relatively high altitudes (i.e. ≤ 315 m) and...

Validation at high frequency of wind field reconstruction from scanning lidar using Gaussian processes

During 2017, a novel method was developed – based on a machine learning approach called Gaussian Process Regression – for using raw Lidar data to reconstruct instantaneous 3D wind fields. This method was successfully validated using a Windcube v2 ground-mounted static beam Lidar, against 10-minute averaged data from several cup anemometers at...

Observational analyses of the North Sea low-level jet

As part of the Dutch Offshore Wind Atlas (DOWA) project, analyses were performed on offshore wind measurements to provide enhanced characterisation of the North Sea wind climate. Of particular interest was the spatiotemporal behaviour of the offshore low-level jet (LLJ) – an anomalous wind event that can significantly impact both wind turbine...