Computation of the wind speed at sites with complex orographic effects

Abstract

Computation of the wind speed at a given station is performed via interpretation of the hydrodynamic modelling results using the multiple regression method. The a priori model parameters-pressure and thermal gradients, the Laplace operator at the standard levels of the lower and middle troposphere, and others-were obtained from reanalysis. The wind speed at observation times at Vladivostok station was used as a dependent variable. Preliminary classifying of the vector of predictors in accordance to the surface pressure gradient has been done. This procedure, first of all, allowed us to decrease variability of the friction force impact on the wind speed formation for a given class. Experiments, which were performed with the different sets of parameters and various classification schemes, allowed selecting models that provide computation results comparable to the known methods of wind speed computation at a given station.