COTUR project

LIDAR (Light Detection And Range) is a remote sensing method whereby the wind is measured by infrared laser light. This remote sensing technique makes it possible to map the wind field and the properties of the wind over a large area.

COTUR (Measuring COherence and TURbulence with lidars) is a joint research project between NORCE (project lead) and the Geophysical Institute of the University of Bergen, the University of Stavanger, and Equinor as partners.

Main goal is the investigation of coherence in the turbulent wind field at scales that are relevant for state-of-the-art offshore wind turbines, with rotor diameters of beyond 150 m. Core of the campaign is the deployment of three scanning lidar systems (Leosphere WindCube 100S) in a triangular setup that are operated synchronized

Core of the campaignis the deployment of three scanning lidar systems (Leosphere WindCube 100S) in a triangular setup. The lidars will mainly be operated in stirring mode with parallel or slightly diverging beams into the main wind direction, to allow for the analysis of coherence in the offshore wind field based on different separation distances.

A static lidar wind profiler (Leosphere WindCube v1) will continuously provide wind speed and wind direction information up to 300 m above ground, that will also be used to modify the measurement direction of the three scanning lidar systems for the coherence investigations. Temperature and humidity profiles in the lowest 3 km of the atmosphere are measured by a passive microwave radiometer (Radiometer Physics HATPRO RG4).

LIDAR (Light Detection And Range) is a remote sensing method whereby the wind is measured by infrared laser light. This remote sensing technique makes it possible to map the wind field and the properties of the wind over a large area.

EOV partners has experience with the planning and execution of national and international measurement campaigns, both onshore and offshore, e.g. trough execution of the international wind measurement campaign OBLEX-F1 at the German research platform FINO1 in the North Sea, as well as the national COTUR measurement campaign at Obrestad Lighthouse in southern Norway. Post-processing and the scientific analysis of the measurement data from campaigns like this is another strong competence