RV Investigator Voyage IN2016_V05 CTD Data

This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2016_V05, titled: "The Great Barrier Reef as a significant source of climatically relevant aerosol particles." The voyage took place between September 28 and October 24, 2016 departing from Brisbane (QLD) and arriving in Brisbane.

Data for 62 deployments were acquired using the Seabird SBE911 CTD 21 and CTD 20, fitted with 24 twelve-litre bottles on the rosette sampler.

Seabird-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 primary sensor had a standard deviation (SD) of 0.0014061 PSU, well within our target of ‘better than 0.002 PSU.’ The standard product of 1 dBar-binned averages were produced using data from the primary sensors.

The dissolved oxygen data calibration fit had a SD of 0.67142 µM. The agreement between the CTD and bottle data was good.

Altimeter, Photosynthetically Active Radiation (PAR) sensor, Colored Dissolved Organic Matter (CDOM) sensor, Fluorometer, Transmissometer, Nephelometer, and Nitrate sensor were also installed on the auxiliary A/D channels of the CTD.

The collected data were subsequently processed and archived within the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart. Additional information regarding this dataset may be contained in the Voyage Summary and the CTD Data Processing Report.

本记录描述了澳大利亚海洋国家设施“调查者号”（RV Investigator）科考船航次IN2016_V05所采集的电导率-温度-深度（Conductivity-Temperature-Depth, CTD）数据，该航次的研究主题为《大堡礁作为气候相关气溶胶粒子的重要来源》。本次航次于2016年9月28日至10月24日开展，从布里斯班（昆士兰州）出发并最终返回布里斯班。

本次航次共完成62次布放作业，所用设备为海鸟（Seabird）SBE911 CTD 21与CTD 20型电导率-温度-深度仪，配套搭载24个12升采水器的罗塞塔采样器。

采用海鸟（Seabird）提供的校准因子计算压力与初始电导率数值，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）提供的校准方案完成校正。所有数据均经过自动化质量控制（Quality Control, QC），以剔除尖峰异常值与超限值。

最终电导率校准基于单次布放分组完成，主传感器的最终校准标准差（standard deviation, SD）为0.0014061 实用盐度单位（PSU），远优于“优于0.002 PSU”的目标阈值。采用主传感器数据生成了1分巴（dBar）分箱平均的标准产品。

溶解氧数据的校准拟合标准差为0.67142 微摩尔（µM），电导率-温度-深度仪数据与采水瓶采样数据的一致性良好。

CTD的辅助模数转换通道还搭载了高度计、光合有效辐射（Photosynthetically Active Radiation, PAR）传感器、有色溶解有机物（Colored Dissolved Organic Matter, CDOM）传感器、荧光计、透射仪、浊度仪与硝酸盐传感器。

采集所得数据后续已完成处理并归档于位于霍巴特的CSIRO海洋与大气（O&A）信息与数据中心（IDC）。有关本数据集的更多详细信息可参见航次总结报告与CTD数据处理报告。