Raw underway Thermosalinograph (TSG) observations from the Integrated Ecosystem Programme: Southern Benguela (IEP: SB) on the Algoa Voyage 255, November 2018

Here we present the 6-second resolution raw Thermosalinograph (TSG) data collected between 20 November and 28 November 2018 during the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the RS Algoa Voyage 255. A SeaBird SBE45 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). This is a long-term monitoring line conducted off the coast of Kleinsee, Namaqualand, Elands/St Helena Bay and Scarborough on the west coast of South Africa. The IEP:SB in 2013 consolidated a long-term, multi-decadal time-series (from 1951 onward) of information for this important region and has continued monitoring in the form of the IEP:SB. The programme is a multi-disciplinary, collaborative and capacity building platform undertaking relevant science, including updating technology, with the aim to develop ecosystem indicators that can be used to effectively monitor and understand the Southern Benguela. These include physical, chemical, planktonic, microbial, seabird, marine mammal, benthic and pollution (plastic) ecosystem indicators as required by ecosystem-based management regarding the following priorities: ocean warming, ocean acidification, trophic functioning, pollution and water quality. It is on-going monitoring programme.

本报告呈现了2018年11月20日至11月28日期间，在RS Algoa航行255次活动中，于综合生态系统计划：南方本格拉（IEP:SB）项目期间，所收集的6秒分辨率的原始Thermosalinograph（TSG）数据。SeaBird SBE45 TSG被用于在科研和监测巡航期间，偶然收集近表层温度和电导率测量数据。水从位于船体船舱内的进水口连续泵送至TSG，观测数据与导航信息持续接口。靠近进水口处的温度传感器提供了入水温度（T1）的测量。通过电导率测量（C）准确计算盐度（S）的水内电导池温度（T2）。这是一条长期监测线，位于南非西海岸的Kleinsee、Namaqualand、Elands/St Helena Bay和Scarborough沿海地区。2013年的IEP:SB项目巩固了自1951年起对该重要区域的长期、数十年时间序列信息，并继续以IEP:SB的形式进行监测。该计划是一个多学科、协作和提升能力构建的平台，承担着相关科学任务，包括更新技术，旨在开发生态系统指标，这些指标可以用于有效地监测和理解南方本格拉生态系统。这些指标包括物理、化学、浮游生物、微生物、海鸟、海洋哺乳动物、底栖和污染（塑料）生态系统指标，以满足基于生态系统的管理需求，针对以下优先事项：海洋变暖、海洋酸化、营养功能、污染和水质量。这是一个持续进行的监测项目。