Map of isotachs-statistical approach and meteorological information transfer

This report gives a statistical treatment of available wind data from airports in Brazil and provides a map of isotachs for extreme yearly wind velocities. A comparison between the statistical models of Frechet and Gumbel is carried out, leading to the adoption of the latter. The low density of meteorological stations used in this approach restricts the knowledge of wind activity. This fact was accounted for in the analytical method for spatial transfer of climatic data. Recommendations are given on how to enlarge the amount of available data.