Lidar Observation of the 2014 Kelut Volcanic Stratospheric Aerosols at Kototabang, Indonesia Makoto Abo, Yasukuni Shibata and Chikao Nagasawa EPJ Web of Conferences, 119 (2016) 07005 Published online: 07 June 2016 DOI: 10.1051/epjconf/201611907005