Physical oceanography from mooring KPO_1096@en

GEOMAR moorings are typically equipped with instruments recording pressure, temperature, conductivity, dissolved oxygen and current velocity. Instruments with pressure, temperature, conductivity and oxygen sensors were calibrated in situ immediately prior to and after a mooring deployment period by attaching them to the CTD frame during CTDO casts. Correction terms were then developed from the difference between the sensor readings and the calibrated CTDO data during several minute long calibration stops. These correction terms were then applied to the full deployment periods. This ensured best data quality with recognition of potential sensor drifts and also allowed for the estimation of calibration and measurement errors (Hahn et al. 2014, Bittig et al. 2018, Berx et al. 2019).GEOMAR锚系观测系统通常搭载可记录压力、温度、电导率、溶解氧与海流流速的观测仪器。对于搭载压力、温度、电导率及溶解氧传感器的仪器，研究人员会在锚系部署周期的前后，通过在CTDO（温盐深溶解氧仪，Conductivity, Temperature, Depth, Dissolved Oxygen）观测站位中将仪器安装至CTDO框架的方式，完成原位校准。随后基于数分钟校准停驻阶段内，仪器传感器读数与经校准的CTDO数据之间的差值，推导得到校正系数，并将该校正系数应用于完整的锚系观测周期。此举既通过识别潜在的传感器漂移保障了最优数据质量，同时也支持对校准误差与测量误差进行估算（Hahn等，2014；Bittig等，2018；Berx等，2019）。