4. Quantifying Weather Influence on RTTA (‘QWIRTTA’)

The project developed a methodology for quantifying the influence of hyperlocal urban weather (including the uncertainty of weather forecasts, associated with longer lookahead times of weather prediction) on strategic deconfliction of U-space flights in metropolitan airspaces. The methods were applied to simulated drone traffic use cases in two European cities: Ljubljana (Slovenia) and Norrköping (Sweden). Several U-space performance metrics (and their probability distributions) were calculated for multiple scenarios with varying weather, drone service demand and other parameters. The results contribute to addressing requirements laid out in EASA’s AMC/GM (specifically, GM2) to Article 18(f) of EU U-space Regulation 664 (planning and review phases, in particular – the technical review). It will allow competent authorities to make an important technical step towards compliance with the regulations and performance-based regulations overall.