Methodology III: GWS® MESO by Al-Pro
The results of the GWS® MESO simulations are validated with wind data from meteorological stations. The wind data are weighted with respect to its representativeness for the model area and with respect to its quality and the length of the measurement. GWS® MESO model results are then corrected and optimized using the weighted wind data information.
Al-Pro has completed a study  on the quality of GWS® MESO data based on the wind data of approximately 340 European met stations. The validation check of the mean wind speed was based on reference data from Deutscher Wetterdienst , European Wind Atlas , the Wind Atlas for the Central European Countries  and on data from Wetteronline GmbH . The majority of the reference stations are located at airports. Station positions were also checked.
The comparison of the GWS® MESO data with the validation data at a reference height of 10 m above ground level shows a deviation of ± 0.5 [m/s] for 52 % of the GWS® samples. A total of 29 % of the calculated GWS® wind speeds are within 1 [m/s] and 10 % are within 1.5 [m/s]. An additional 9 % of calculated GWS® wind speed deviates more than 1.5 [m/s] from the weather station data. Click here to download the study.