This text presents a case study of a wind resource site in Brazil with complex topography and unique wind distribution characteristics. Unlike typical sites where the windiest areas are near the highest points, this site’s wind distribution doesn’t align with its topography. The study focuses on how to identify climate characteristics related to this phenomenon, especially for early project development in similar Brazilian sites.
In the case study, the site has a complex topography with predominant eastward wind flow. The wind resource area has an abrupt slope in the east, gradually decreasing in height toward the west, creating a significant obstacle to the wind flow. Initial measurements using a single met mast near the hilltop showed variations in maximum wind speeds, with different models suggesting max speeds at different heights. To assess this situation, various model data were generated and compared. Three simulation technologies were employed and compared against measurements from seven locations. High-resolution mesoscale models provided additional data for understanding site phenomena. Gathering such information early in project development is crucial for adjusting measurement campaigns to ensure an accurate evaluation of wind flow and turbulence.