AFAIK, there are not that many large-scale operational retrievals of wind velocity by remote methods. The ultrasound technique you mention for remote retrieval

AFAIK, there are not that many large-scale operational retrievals of wind velocity by remote methods. The ultrasound technique you mention for remote retrieval (which was news to me) is apparently based on this kind of rig: https://en.wikipedia.org/wiki/SODAR https://en.wikipedia.org/wiki/SODAR Ocean surface winds are retrieved on vast scales by satellite measurements, due to their effect on the surface roughness, which is measured by radar (e.g., https://manati.star.nesdis.noaa.gov/products.php https://manati.star.nesdis.noaa.gov/products.php). But that's an exceptional case.