Trend analysis in time series of wind speed in Ouricuri, Pernambuco, Brazil
Análise de Séries temporais; Análise de Tendências; Teste Mann-Kendall; Sen’s Slope; Velocidade do Vento.
To verify the presence of hourly, monthly, seasonal and annual wind speed trends in the period from 2011 to 2022, representative of the municipality of Ouricuri, where the Automatic Meteorological Station EMA Ouricuri (A366) is located, we applied the non-parametric statistical tests of Modified Mann-Kendall MMK associated with the Sen's Slope estimator, The choice of Station A366 was due to its proximity to the site planned for the installation of the D. João Wind Farm, which is in the initial phase of Environmental Licensing by Ibama. In Brazil, the share of renewable sources in electricity generation currently corresponds to 87.9% of the electricity matrix, with a 12.9% growth in wind power generation (EPE, 2023). The results of this study indicate that the wind speed of the EMA Ouricuri A366, located in the Sertão do Araripe Region, municipality of Ouricuri, Pernambuco, Brazil, presented hourly, monthly, seasonal and annual averages close to each other (respectively 2.98 m/h). s; 2.97 m/s; 2.96 m/s and 2.99 m/s), with very dispersed values (variability of above 30%), and, falling into the Light and Gentle Breeze category of the Beaufort table , and predominance of a negative trend in the values of the hourly, monthly and seasonal averages of the studied series.