“…Specific examples of difficult-to-observe areas that have been sampled using UASs include in tropical cyclones (e.g., Cione et al, 2016Cione et al, , 2019, over the Arctic Ocean (e.g., Curry et al, 2004), in distant Antarctic regimes (e.g. Knuth et al, 2013), during a total solar eclipse (Bailey, et al, 2019), and in and around supercell thunderstorms (e.g., Elston et al, 2011). Beyond the PBL, data gathered by UASs have shed light on interactions between the atmosphere and other components of the Earth system (e.g., oceans, ice, land surface), with campaigns covering both lower latitudes (e.g., Corrigan et al, 2006;Ramanathan et al, 2007;van den Kroonenberg et al, 2008;Houston et al, 2012) and higher latitudes (e.g., Curry et al, 2004;Cassano et al, 2010;Knuth and Cassano, 2014;Kral et al, 2018).…”