Title Raw underway Thermosalinograph (TSG) observations from the Algoa Voyage 269, October 2020
Project South Atlantic Meridional Overturning Circulation Basin-wide Array (SAMBA)
Authors

Leon Jacobs
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientific Technician 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, email: LJacobs@environment.gov.za

Marcel van den Berg
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientific Technician 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, email: mvdberg@environment.gov.za

Tarron Lamont
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientist 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, email: tlamont@environment.gov.za

Publisher Department of Forestry, Fisheries and the Environment (2021)
Contributors

Contact Person: Leon Jacobs
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientific Technician 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, email: leon5134@gmail.com

Abstract 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 6-second resolution raw TSG data collected between 03 October 2020 and 16 October 2020, during Voyage 269 on the Algoa.
Methods The SeaBird SBE45 Thermosalinograph (TSG) is used on the 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. The software was set to record data at 6 second intervals for the duration of the cruise, between 03 October 2020 and 16 October 2020. Data was collected in the southern part of the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 03 Oct 2020 – 16 Oct 2020
Geographic extent

Benguela Current Large Marine Ecosystem (BLMCE), west coast of South Africa

North: -30.0
South: -35.0
West: 11.0
East: 19.0

Vertical extent Max: -5 m
Min: -5 m
Keywords Algoa, Algoa 269, conductivity, near-surface, salinity, SBE45, SOUTH ATLANTIC OCEAN, temperature, Thermosalinograph, TSG, underway
Related resources
  • This digital object is part of South Atlantic Meridional Overturning Circulation Basin-wide Array (SAMBA) cruise on the Algoa Voyage 269, September - October 2020 (10.15493/dea.mims.20210408)