A one-year period out of more than two years of concurrent mast and lidar data was analyzed. The mast and lidar were sited on a small and flat island to measure offshore wind resource. A robust power pack allowed a very high lidar availability but data availability was occasionally reduced significantly due to fog, mist or precipitation. The value of hub-height measurement as well as that of combined shortmast and lidar were investigated and quantified in terms of uncertainty reduction in Annual Energy Production (AEP) estimation. Finally, offshore Turbulence Intensity (TI) as measured by lidar and met mast data was briefly analyzed. It is shown that while lidar is expected to underestimate TI, its reading could be scaled to that of cup anemometers if a local reference is available.
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