Comparison of correlated Gumbel probability models for directional maximum wind speeds

In this paper we present a comparison of two probabilistic models for directional annual maximum wind speeds to clarify the characteristics of directional maximum wind speeds. First, two models for directional annual maximum wind speeds are summarized. These models are applied to recorded 10-min average wind speeds at several meteorological stations, and the consistency of models and effects of correlation coefficients between directional annual maximum wind speeds on the relation between the CDF for direction-free annual maximum wind speed and those for individual directional wind speeds are presented. The effects of correlation coefficients are clearly seen at some stations, and the usefulness of the proposed models is demonstrated for these sites.