Tidal action results in a rise and fall of the sea surface that effectively changes the position of an offshore wind turbine hub in relation to the wind shear profile. This effect is quantified using measured data from three offshore UK sites. Statistical evidence of the influence of tide on mean wind speed and turbulence is presented. The possibilities for improving correlation between onshore and offshore wind data are explored. It is found that improvements in correlation are negligible, even for high tidal range sites.
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