Trend analysis of maximum annual mean wind velocities in Krasnodar Krai
Abstract
Trend analysis of maximum annual mean wind velocities in Krasnodar Krai
Incoming article date: 24.07.2019Paper considers maximum annual values of mean wind velocity in all plain and piedmont regions of Krasnodar Krai, which served as the basis for design values of wind loads on buildings in local code SNKK “Loads and Actions. Snow Loads and Wind Actions”. Time series of anemometric measurements of wind velocities are analyzed from the beginning of 1970s to 2012 extended by 13 years as compared to the time series used for developing this code. For detecting the significance of the linear trend of wind velocity maximums inversion criterion was employed. Calculations were performed for the data of anemometric wind velocity measurements on 29 meteorological stations uniformly distributed over a territory of the region. They showed that significant trend of increase of wind velocity with the high level of statistical certainty 0,95 is present only in two cases. In half of the rest cases trend is descending, in another half trend is statistically insignificant as well as mostly descending. Average decrease of wind velocity is 30%.
Keywords: wind loads, actions, local building code, inversion criterion, trend significance, time series