RV Investigator Voyage IN2019_T01 CTD Data

This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2019_T01, titled: "Collaborative Australian Postgraduate Sea Training Alliance (CAPSTAN)". The voyage took place from Hobart (TAS) to Freemantle (WA) between April 29 and May 9, 2019.

Data for 5 deployments were acquired using the Sea-Bird SBE911 CTD 23, fitted with 36 twelve litre bottles on the rosette sampler.
Sea-Bird-supplied calibration factors were used to compute the pressures and preliminary conductivity values. CSIRO-supplied calibrations were applied to the temperature data. The data were subjected to automated QC to remove spikes and out-of-range values.

The final conductivity calibration was based on a single deployment grouping. The final calibration from the secondary sensor had a standard deviation (SD) of 0.0021299 PSU, outside our target of ‘better than 0.002 PSU’. The standard product of 1 decibar binned averaged were produced using data from the secondary sensors.

The dissolved oxygen data calibration fit had a SD of 0.87858 µM. The agreement between the CTD and bottle data was good.

Biospherical PAR, Tritech Altimeter (100m), Transmissometer, ECO-Chlorophyll and ECO-Scattering sensors were also installed on the auxiliary A/D channels of the CTD.

本记录描述了由澳大利亚国家海洋设施（Marine National Facility）“调查者号”（RV Investigator）执行的IN2019_T01航次所采集的温盐深（Conductivity-Temperature-Depth, CTD）数据，该航次主题为“澳大利亚研究生海洋训练协作联盟（Collaborative Australian Postgraduate Sea Training Alliance, CAPSTAN）”。本次航次于2019年4月29日至5月9日期间，从塔斯马尼亚州霍巴特（Hobart, TAS）驶往西澳大利亚州弗里曼特尔（Freemantle, WA）。

本次航次共完成5次布放作业，采用Sea-Bird SBE911型CTD 23系统采集数据，其搭载的罗塞特采样器（rosette sampler）配备了36个12升采水瓶。

采用Sea-Bird提供的校准系数计算压力值与初始电导率数值；温度数据则使用澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）提供的校准方案进行校正。所有数据均经过自动化质量控制（Quality Control, QC）处理，以剔除尖峰异常值与超范围数值。

最终电导率校正基于单次布放分组结果。次级传感器的最终校正结果的标准偏差（Standard Deviation, SD）为0.0021299 PSU，未达到预设的“优于0.002 PSU”目标。基于次级传感器数据，生成了1分巴（decibar）分箱平均的标准产品数据。

溶解氧数据的校正拟合结果的标准偏差为0.87858 µM。温盐深传感器与采水瓶实测数据的吻合度良好。

此外，CTD系统的辅助模数转换（A/D）通道还搭载了Biospherical光合有效辐射（Photosynthetically Active Radiation, PAR）传感器、Tritech 100米高度计、透射仪、ECO型叶绿素传感器以及ECO型散射传感器。