@Peggotty
Windy visualises weather models like ECMWF, GFS, ICON…. These models probably integrate ASCAT data during the assimilation phase.
https://www.eumetsat.int/ascat
https://www.ecmwf.int/en/elibrary/79618-ascat-ocean-surface-wind-assessment
But Windy does not make its own prediction. When Windy displays Wind forecasts, these are the forecasts from these models, nothing else. So Windy does not incorporate ASCAR data.