Title Long-term observations of daily bottom currents along the SAMBA transect at PIES Mooring P4 (September 2013 – August 2015)
Project South Atlantic Meridional Overturning Circulation (SAMOC-SA)
Authors

Sabrina Speich
Ecole Normale Supérieure (ENS) Laboratoire de Météorologie Dynamique (LMD); role: Marine Scientist; contact details: email: sabrina.speich@lmd.ens.fr

Tarron Lamont
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientist; contact details: email: tlamont@dffe.gov.za

Gavin Louw
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: glouw@dffe.gov.za

Marcel van den Berg
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: mvdberg@dffe.gov.za

Chris Meinen
Atlantic Oceanographic and Meteorological Laboratory (AOML); role: Marine Scientist; contact details: email: chris.meinen@gmail.com

Rigoberto Garcia
Atlantic Oceanographic and Meteorological Laboratory (AOML); role: Marine Scientist; contact details: email: Rigoberto.Garcia@noaa.gov

Renellys Perez
Atlantic Oceanographic and Meteorological Laboratory (AOML); role: Marine Scientist; contact details: email: Renellys.C.Perez@noaa.gov

Shenfu Dong
Atlantic Oceanographic and Meteorological Laboratory (AOML); role: Marine Scientist; contact details: email: Shenfu.Dong@noaa.gov

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

Contact Person: Gavin Louw
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: mrgavinl@gmail.com

Abstract Here we present processed northward and eastward velocity components from a 2000 khz Aanderaa Doppler Current Sensor (DCS) deployed at a depth of 4432m at location P4 (34.504°S; 15.002°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 07 September 2013 and 12 August 2015. 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 4432m at location P4 (34.504°S; 15.002°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 07 September 2013 and 12 August 2015, 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 07 Sep 2013 – 12 Aug 2015
Geographic extent

Cape Basin, South Atlantic Ocean

North: -34.504
South: -34.505
West: 15.002
East: 15.003

Vertical extent Max: -4432 m
Min: -4432 m
Keywords currents, moorings, PIES, Pressure-equipped Inverted Echo Sounder, SAMBA transect, SOUTH ATLANTIC OCEAN
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