Processed underway Thermosalinograph (TSG) observations from Algoa Voyage 268, February - March 2020

A SeaBird SBE45 Thermosalinograph (TSG) is used to opportunistically collect underway near-surface temperature and conductivity measurements during research and monitoring cruises. Water is continuously pumped to the TSG from an intake located in the hull of the vessel, and the observations are continuously interfaced with navigational information. A temperature sensor close to the intake provides temperature measurements of the incoming water (T1). The temperature of the water inside the conductivity cell (T2) is used to accurately compute salinity (S) from the conductivity measurements (C). Here we present the 10-second resolution processed TSG data collected, between 25 February 2020 and 04 March 2020, during Voyage 268 on the Algoa.

本数据集采用SeaBird SBE45热盐仪（TSG）在研究及监测航次中偶然收集航行中近表温度和电导率测量数据。海水持续地从船体船壳中的进水口泵送至TSG，观测数据与导航信息实时接口。位于进水口附近的一温度传感器提供 incoming water（T1）的温度测量值。通过电导率测量值（C）精确计算导电细胞内部水温（T2），从而准确推算盐度（S）。在本研究中，我们展示了在2020年2月25日至3月4日期间，Algoa号268航次中收集的，分辨率为10秒的TSG处理数据。