EARLINET observations of the Eyjafjallajökull ash plume over Europe - Pappalardo, Gelsomina; Amodeo, Aldo; Ansmann, Albert; Apituley, Arnoud; Alados Arboledas, Lucas; Balis, Dimitris; Böckmann, Christine; Chaikovsky, Anatoli; Comeron, Adolfo; D'Amico, Giuseppe (Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VI, 2010)