IMPACT OF ROUGHNESS VARIABILITY OVER WIND POWER ASSESSMENT IN THE WHITE HEADLAND

The purpose of this study is to assess the wind power at the site of the white headland (Nouadhibou, Mauritania); the data from the site covers eleven years at height 10 m above ground level AGL. They have been made available by (Merra-2), the Modern-Era Retrospective analysis for Research and Applications V.02. In the aim of wind power classification of the site, the data must be extrapolated for height 50 m (AGL) as recommended by USA standard specifications. However, the roughness, for this particular desert site is variable over seasons, for the reason of the sand motion, the short-term measurements of wind speed data at two or more height levels will deduct it. Those data are made available by the S.N.I.M (National Company of Mining Industry) farm for one year, 2016 at 10, 50, and 55 m AGL, but those were not complete, so we use the Kalman filtering to control, predict and complete all gaps. The study conducted by wind data (speed, direction) with 10 minutes as steep of the measurements. The research shows that prevailing winds oriented to the north-north-west (NNW) direction. The Weibull has found the setting that was determined by the likelihood, and standard deviation methods are the most suitable for a better coefficient of determination. Those parameters are obtained for height 50 m AGL as recommended by USA standard specifications; the wind power decided as excellent.