Turbulence in a coastal environment: the case of Vindeby

Abstract. The one-point and two-point power spectral densities of the wind velocity fluctuations are studied using observations from an offshore mast at Vindeby Offshore Wind Farm, for a wide range thermal stratifications atmosphere. A comparison with estimates FINO1 platform (North Sea) is made to identify shared characteristics turbulence between different sites. sonic anemometer measurement data 6, 18, 45 m a.m.s.l. (above mean sea level) considered. These heights lower than platform, where measurements were collected 40 80 m. Although anemometers affected by transducer-flow distortion, spectra along-wind component consistent those when surface-layer scaling used, near-neutral moderately diabatic conditions. co-coherence component, estimated vertical separations under conditions, matches remarkably well results dataset platform. findings mark important step toward more comprehensive coherence models load calculation. present valuable better understanding structure in marine atmospheric boundary layer relevant estimations turbines. Yet, datasets recorded cover only part rotor state-of-the-art Further improvements characterisation turbine design will require above 100