Name: Long-term observations of daily bottom currents along the SAMBA transect at PIES Mooring P4 (October 2019 – October 2021)
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.08172023

Title	Long-term observations of daily bottom currents along the SAMBA transect at PIES Mooring P4 (October 2019 – October 2021)
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 4450m at location P4 (34.500°S; 14.630°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 12 October 2019 and 01 October 2021. 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 4450m at location P4 (34.500°S; 14.630°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 12 October 2019 and 01 October 2021, 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) Cite 10.15493/DEA.MIMS.08172023 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	12 Oct 2019 – 01 Oct 2021
Geographic extent	Cape Basin, South Atlantic Ocean North: -34.5 South: -34.501 West: 14.63 East: 14.631
Vertical extent	Max: -4450 m Min: -4450 m
Keywords	currents, moorings, PIES, Pressure-equipped Inverted Echo Sounder, SAMBA transect, SOUTH ATLANTIC OCEAN
Related resources	This digital object continues Long-term observations of daily bottom currents along the SAMBA transect at PIES Mooring P4 (September 2013 – August 2015) (10.15493/DEA.MIMS.08032023) This digital object is new version of Raw PIES and current data for long-term observations of acoustic travel time (tau); bottom pressure and currents along the SAMBA transect at PIES P4 (October 2019 - October 2021) (10.15493/DEA.MIMS.07752023) 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) This digital object is referenced by 10.1002/2013JC009228 This digital object is referenced by 10.1029/2018GL077408 This digital object is referenced by 10.1029/2018JC014554 This digital object is referenced by 10.1029/2020JC016947 This digital object is referenced by 10.1126/sciadv.aba7573 This digital object is referenced by 10.3389/fmars.2019.00260 This digital object is referenced by 10.5194/os-14-923-2018

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