Water temperature, salinity, and optical properties from an Acrobat towed vehicle from bi-weekly grids conducted at Palmer Station, Antarctica in 2020

This data is from a towed instrument called an ACROBAT. The Acrobat is a winged instrument platform that cycles between the surface and 60 m as it is towed behind a ship traveling at speeds of 5 to 8 knots. It is equipped with a SeaBird 49 FastCAT CTD (temperature, conductivity, and pressure) and a Wetlabs EcoPUCK optical sensor (chlorophyll a, colored dissolved organic matter (CDOM), and backscatter). The ACROBAT system has been used to map submesoscale features (fronts, eddies and filaments) and provides a real-time data feed via a faired Kevlar cable to the vehicle operator. The ACROBAT enables adaptive sampling of features of interest and detailed mapping of the upper ocean without aliasing due to tides. Bi-Weekly sampling survey grids were conducted out of Palmer Station through the use of the USAP RHIB platform.本数据集源自一款名为ACROBAT的拖曳式观测仪器。该平台为翼型观测搭载平台，在航速5至8节的船舶后方被拖曳作业时，可在海面与60米水深之间往复升降。平台搭载SeaBird 49 FastCAT CTD（温度、电导率与压力传感器）以及Wetlabs EcoPUCK光学传感器，可同步观测叶绿素a、有色溶解有机物（CDOM）与后向散射系数。ACROBAT系统已被用于绘制亚中尺度特征（锋面、涡旋与细流丝）的空间分布图，并可通过整流凯夫拉缆线向平台操控人员传输实时数据。ACROBAT可实现对目标特征的自适应采样，以及上层海洋的精细测绘，且不会因潮汐产生混叠效应。科研团队依托美国南极项目（United States Antarctic Program, USAP）的刚性充气艇（Rigid Hull Inflatable Boat, RHIB）平台，在帕尔默站周边开展了每两周一次的采样调查网格作业。