AbstractEpisodes of extremely strong northerly winds (known as Etesians) during boreal summer can cause hazardous conditions over the Aegean Archipelago (Greece) and represent a threat for the safe design, construction and operation of wind energy turbines. Here, we characterize these extremes by employing a Peak Over Threshold approach in the extended summer season (May-September) from 1989 to 2008. Twelve meteorological stations in the Aegean are used and results compared with six-hourly wind speed data from five EURO-CORDEX, ERA-Interim-driven, Regional Climate Model (RCMs) simulations. The main findings show that, in the range of wind speeds for the maximum power output of the turbine, the most Etesian-exposed stations could operate 90% at a hub height of 80m. Central and northern Aegean are also identified as areas prone to wind hazards, where medium to high wind IEC-class wind turbines could be more suitable. In central Aegean, turbines with a cut-out wind speed higher than 25 m/s are recommended. Overall, RCMs can be considered a valuable tool for investigating wind resources at regional scale. Therefore, this study encourages a broader use of climate models for the assessment of future wind energy potential over the Aegean.
Journal of Applied Meteorology and Climatology – American Meteorological Society
Published: Feb 21, 2018
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