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Title Long-term observations of daily bottom currents along the SAMBA transect at PIES Mooring P1 (August 2015 – July 2017)
Project South Atlantic Meridional Overturning Circulation (SAMOC-SA)
Authors

Speich, Sabrina
Ecole Normale Supérieure Laboratoire de Météorologie Dynamique; role: Marine Scientist

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

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

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

Meinen, Chris
Atlantic Oceanographic and Meteorological Laboratory; role: Marine Scientist

Garcia, Rigoberto
Atlantic Oceanographic and Meteorological Laboratory; role: Marine Scientist

Perez, Renellys
Atlantic Oceanographic and Meteorological Laboratory; role: Marine Scientist

Dong, Shenfu
Atlantic Oceanographic and Meteorological Laboratory; role: Marine Scientist

Publisher Department of Forestry, Fisheries and the Environment (2023)
Contributors

Contact Person: Louw, Gavin
Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician; email: GLouw@dffe.gov.za

Abstract Here we present processed northward and eastward velocity components from a 2000 khz Aanderaa Doppler Current Sensor (DCS) deployed at a depth of 1150m at location P1 (34.378°S; 17.633°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 13 August 2015 and 17 July 2017. 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 single-point 2000 khz Aanderaa Doppler Current Sensor (DCS) was deployed at a depth of 1150m at location P1 (34.378°S; 17.633°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean. The instrument measured hourly current speed and direction, between 13 August 2015 and 17 July 2017, which were processed using standard published University of Rhode Island (URI) software and protocols. Northward and eastward velocity components were subsampled to one value per day at noon (UTC), and have not been corrected for magnetic declination.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 13 Aug 2015 – 17 Jul 2017
Geographic extent

Cape Basin, South Atlantic Ocean

North: -34.378
South: -34.379
West: 17.633
East: 17.634

Vertical extent Max: -1150 m
Min: -1150 m
Keywords currents , moorings , PIES , Pressure-equipped Inverted Echo Sounder , SAMBA transect , SOUTH ATLANTIC OCEAN
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