Daily wind speed harmonic analysis for Marmara region in Turkey

In this study, harmonic analysis is used to model the daily wind speed values recorded at ten stations in the Marmara region, Turkey, with distinct meteorological conditions from 1993 to 1997. The coefficients, amplitude, variance and phase angle, of each harmonic are calculated for the months of January, April, July and October, leading to total variance maps for spatial interpolations. It is seen that up to the 9th harmonic more than 80% of the total variance can be presented. The western and eastern parts of the Marmara region have different wind pattern characteristics. The contributions of each harmonic to the total variance are calculated, and then regional variance maps are evaluated.