Ceilometer observation Vessel: R/V MIRAI Cruise No.: MR21-03 Period: 26 May 2021 - 06 July 2021 Instruments: CL51 Software Level ID 102 , Vaisala, Finland Software: CL-VIEW Ver.2.0, Vaisala, Finland Location: Compass deck (18m from the sea level) Measure parameters; Cloud base height [m] Backscatter profile Cloud cover [oktas] and height [m] Sampling rate: 36 [seconds] Height offset: 0 [m] Data type; YYMMDD00.DAT: RAW data (ASCII) Remarks; Window Cleaning 23:48UTC 31 May 2021 23:32UTC 06 June 2021 20:57UTC 15 June 2021 23:35UTC 23 June 2021 20:33UTC 03 July 2021 ///