The Inflence of the Atmospheric Stability Conditions on the Available Wind Energy for Three Libyan Coastal Cities
Keywords:
atmospheric boundary layer, thermal and static stratifiations, turbulence , mixing diffsion , convection , wind speed profies , atmospheric stability parameters , available wind energyAbstract
The lowest portion of the atmosphere is vital to lives, infrastructure, and activities. It means air quality, air motion and momentum, solar and wind energy, and weather safety measures. Wind speed observations at three diffrent heights for three Libyan coastal sites; Magron, Musrata and Darnah, were documented and analysed. Wind speed profies were estimated employing the two common methods: logarithmic wind and power law profies. Th seasonal and annual patterns, and atmospheric stability
classifiations were obtained. Th daily wind shear variation and wind velocity profies were determined at diffrent atmospheric stability conditions, neutral, stable and unstable.
The results confim that the highest wind shear occurs during stable conditions at night and for longer in winter days, and the lowest during unstable and neutral atmospheric conditions near midday specially in summer days. Non-dimensional wind speed profies were obtained and their behaviour was identifid and compared. Th available wind energy history was evaluated considering the effct of atmospheric stability conditions on the estimated extracted energy for each site
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