Lowered-ADCP data acquired in 2020 in the western Arctic using R/V Mirai (MR20-05C)

The lowered ADCP (LADCP), Workhorse Monitor WHM300 (Teledyne RD Instrument, San Diego, California, USA) was utilized at the every CTD point in MR20-05C to get a shear data at the same time. LADCP system consist of two ADCP of upward-and downward looking transducer and a 45V battery package. The LADCP system were set for recording before the CTD cast and its data were recovered right after CTD cast. Velocity conversion from the two transducers were done by LDEO LADCP software (version 10; Visbeck 2002). For the data conversion, navigation data and CTD data were applied for the improvement of data quality.本研究在MR20-05C航次的每个温盐深仪（Conductivity-Temperature-Depth，CTD）测站均部署了下放式声学多普勒流速剖面仪（Acoustic Doppler Current Profiler，ADCP，简称LADCP）——该设备为美国加利福尼亚州圣地亚哥市泰力丁RD仪器公司（Teledyne RD Instrument）生产的Workhorse Monitor WHM300型设备，用于同步获取剪切流数据。该LADCP系统包含两台分别配备朝上和朝下换能器的ADCP，以及一套45V电池组。该系统在CTD投放前启动记录，并在CTD投放完成后即刻回收数据。两台ADCP的流速数据转换工作由LDEO LADCP软件（版本10；Visbeck，2002）完成。数据转换过程中引入导航数据与CTD数据，以提升数据质量。