Title Long-term observations of daily subsurface temperatures at SAMBA Mooring 9 (October 2020 - September 2022)
Project South Atlantic Meridional Overturning Circulation (SAMOC-SA)
Authors

Lamont, Tarron
Department of Forestry, Fisheries and the Environment; role: Marine Scientist

van den Berg, Marcel
Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician

Louw, Gavin
Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician

Publisher Department of Forestry, Fisheries and the Environment (2025)
Contributors

Contact Person: van den Berg, Marcel
Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician email: Mvdberg@dffe.gov.za

Abstract Here we present processed daily subsurface temperatures from an ADCP located at a depth of 444m at M9 (34.5032°S; 17.1243°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 06 October 2020 and 30 September 2022.The South African component of the international South Atlantic Meridional Overturning Circulation project (SAMOC-SA) aims to characterise the time-mean and time-varying components of the SAMOC in the South Atlantic Ocean and monitor the variability of the main Southern Ocean frontal systems associated with the Antarctic Circumpolar Current (ACC), south of Africa.
Methods A subsurface-mounted, upward-looking, 75 kHz RD Instruments Acoustic Doppler Current Profiler (ADCP) was deployed at location M9 (34.5032°S; 17.1243°E), along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean. A temperature sensor on the instrument measured hourly temperature readings between 06 October 2020 and 30 September 2022, at a depth of 444m. These hourly values were averaged to daily means. Daily values were only generated for days on which there were 75 % or more hourly readings.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 06 Oct 2020 – 30 Sep 2022
Geographic extent
Marker
1000 km
Leaflet Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012

Cape Basin, South Atlantic Ocean

Lat: -34.5032
Lon: 17.1243

Vertical extent Max: -444 m
Min: -444 m
Keywords ADCP, moorings, SOUTH ATLANTIC OCEAN, temperature
Related resources
  • This digital object continues Long-term observations of daily subsurface temperatures at location Mooring 9 (October 2018 - October 2020) (10.15493/DEA.MIMS.01742023)
  • This digital object is new version of Raw Acoustic Doppler Current Profiler (ADCP) data from long-term observations of currents at SAMBA Mooring 9 (October 2020 - September 2022) (10.15493/DEA.MIMS.15532023)
  • This digital object is part of Long-term moored observations from the eastern part of the South Atlantic Meridional Overturning Circulation Basin-wide Array (SAMBA) (10.15493/DEA.MIMS.26052050)