About nocturnal low-level jets (NLLJs), with wind speeds of about 10 m/s at and below 500 m altitude, occuring at numerous places in the world, including Europe, Africa, Asia, Australia, the United States, during hot periods:
ACP - Taklimakan Desert nocturnal low-level jet: climatology and dust activity
About LLJs in the world, the figure 5 showing wind speeds of about 10 to 20 m/s distributed in several locations, including 12 m/s in a selected location in Germany:
Global Climatology of Low‐Level‐Jets: Occurrence, Characteristics, and Meteorological Drivers - Luiz - 2024 - Journal of Geophysical Research: Atmospheres - Wiley Online Library (see the said figure 5 about LLJs in various places in the world, from polar regions to temperate and tropical regions, showing the highest LLJ frequencies (80% for the selected location in Greenland, and 100% for the selected location in Antartica), the highest wind speeds (around 18 m/s) at the lowest ground heights (about 150 m) in polar regions (Greenland, Antartica)).
Regarding flexible AWES, they might experience less consequences from wind shear than wind turbines with a large rigid rotor, and therefore be better suited.