Observations and retrievals of volcanic ash clouds using ground- and satallite-based sensors

Barsotti, Sara; Bonadonna, Costanza; Corradini, Stefano; Donnadieu, Franck; Freret-Lorgeril, Valentin; Gudmundsson, Magnús Tumi; Kylling, Arve; Montopoli, Mario; Ripepe, Maurizio; Scollo, Simona; Vulpiani, Gianfranco