Name: Processed underway Thermosalinograph (TSG) observations from RS Algoa Voyage 252, August 2018
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.07042025

Title	Processed underway Thermosalinograph (TSG) observations from RS Algoa Voyage 252, August 2018
Project	Integrated Ecosystem Programme: Southern Benguela (IEP: SB)
Authors	Anders, Darrel Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician; Frantz, Franklin Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment; role: Marine Research Assistant; Jacobs, Leon Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician; van den Berg, Marcel Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician; Lamont, Tarron Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment; role: Marine Scientist;
Publisher	Department of Forestry, Fisheries and the Environment (2025)
Contributors	Contact Person: van den Berg, Marcel Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician; email: mvandenberg.dea@gmail.com
Abstract	Here we present the 6-second resolution processed Thermosalinograph (TSG) data collected, between 20 August and 28 August 2018, during voyage 252 on the RS Algoa. 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).
Methods	The SeaBird SBE45 Thermosalinograph (TSG) is used on the RS Algoa for the collection of underway near-surface temperature and conductivity measurements. The underway seawater is obtained from a depth of 5m below the surface and pumped through the TSG. Data is collected using the most recent SeaBird (SBE) SeaSave software and processed using the most recent SBE Dataprocessing software. The software was set to record data at 6 second intervals for the duration of the cruise, between 20 August and 28 August 2018. Data was collected in the southern part of the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa. Unreliable TSG measurements can result from a variety of problems encountered during the cruises, including insufficient water flow, extreme air bubbling during severly adverse weather conditions, debris trapped in the system, or a variety of electronic failures. Detailed visual inspection of the ship trajectory and TSG measurements, as well as comparisons with other concurrent and historical near-surface measurements, and expert knowledge of local conditions, were used to identify and remove all unreliable data.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.07042025 Style Terms of use These data are made available with the express understanding that any such use will properly acknowledge the originator(s) and publisher and cite the accession numbers and/or associated Digital Object Identifiers. Anyone wishing to use these data should properly cite and attribute the data providers listed as authors in the metadata provided with each dataset. It is expected that all the conditions of the data license will be strictly honoured. Use of any material herein should be properly cited using the dataset’s persistent identifiers such as accession numbers and DOIs. I agree to the terms of use
Temporal extent	20 Aug 2018 – 28 Aug 2018
Geographic extent	300 km Leaflet Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012 Benguela Current Large Marine Ecosystem (BCLME); shelf region on the west coast of South Africa North: -29.0 South: -35.0 West: 14.0 East: 20.0
Vertical extent	Max: -5.0 m Min: -5.0 m
Keywords	conductivity, EOV: Physics > Sea surface salinity, EOV: Physics > Sea surface temperature, near-surface, salinity, SBE45 Thermosalinograph (TSG), SOUTH ATLANTIC OCEAN, SST, temperature, THERMOSALINOGRAPH
Related resources	This digital object is new version of Raw underway Thermosalinograph (TSG) observations from RS Algoa Voyage 252, August 2018 (10.15493/DEA.MIMS.08042025) This digital object is part of Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on Algoa Voyage 252, August 2018 (10.15493/dea.mims.26052248)

Cite 10.15493/DEA.MIMS.07042025

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