Carried out in collaboration with EDF Power Solutions and presented at the french Wind Energy Scientific Days (Journées Scientifiques de l'Éolien) in February 2026, this work demonstrates that, in order to accurately assess a site's wind resources, it is imperative to consider its actual atmospheric thermal stability conditions. The precise calibration of vertical wind profiles is necessary for that, and enables, moreover, the identification of areas where negative shear is present and where significant structural loads may be exerted on wind turbines.You can download the poster presenting our methodology and the results of this study using the form below.
Influence of Atmospheric Thermal Stability in Wind Resource Assessment for Complex Site with Prevailing Unstable Conditions and Atypical Wind Profiles
Abstract
Due to their effect on structural loads, S-shaped wind profiles that correspond to negative shear values can be considered as non-idealized wind profiles and pose a challenge to the wind industry.
This project's primary objective was to determine whether negative wind shear usually challenging to predict could be simulated under particular thermal stability circumstances.
To explore this, one site located in North Africa in complex terrain and desert area with multiple masts was analyzed using Meteodyn WT software.