Determination of wind gust factor at windy areas of Bangladesh

Gust factors are analyzed for wind speeds greater than 10 m/s in a large set of data from 4 wind speed monitoring stations in Bangladesh. The average gust factors appear to be independent of the stability of the atmosphere, but there is strong dependency on wind speed, altitude of the weather station and the nearby topography. The mean gust factor decreases regularly with increased wind speed as well as with higher altitude. The data suggests that to get an average gust factor of 1.54 or more in stable flows. The results of the study suggest that in the most cases hurricane gust factors can be described using models developed for standard neutral boundary layer flow conditions.