This is the questionnaire developed by HARMONIOUS aimed at identifying the most urgent and important challenges drone-based science will probably face in the near future. All UAS users are encouraged to participate on this short survey. https://docs.google.com/forms/d/e/1FAIpQLSdVVrZUwAmb-BpbXwfAH2lB9FuOMNuR7pNt-zbGYGyHZJRWIw/viewform Share on: Print (Opens in new window) Print Share on LinkedIn (Opens in new window) LinkedIn Share on WhatsApp (Opens in new window) WhatsApp Share on X (Opens in new window) X Share on Reddit (Opens in new window) Reddit Share on Facebook (Opens in new window) Facebook Share on Pinterest (Opens in new window) Pinterest Post navigation Previous postPrevious Spatial distribution of tracers for optical sensing of stream surface flowNext postNext An Integrative Information Aqueduct to Close the Gaps between Satellite Observation of Water Cycle and Local Sustainable Management of Water Resources