Name: Raw PIES data for long-term observations of acoustic travel time (tau) and bottom pressure along the SAMBA transect at PIES P3a (October 2021 - September 2023)
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.13762023

Title	Raw PIES data for long-term observations of acoustic travel time (tau) and bottom pressure along the SAMBA transect at PIES P3a (October 2021 - September 2023)
Project	South Atlantic Meridional Overturning Circulation (SAMOC-SA)
Authors	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 Perez, Renellys Atlantic Oceanographic and Meteorological Laboratory; role: Marine Scientist Dong, Shenfu Atlantic Oceanographic and Meteorological Laboratory; role: Marine Scientist Garcia, Rigoberto Atlantic Oceanographic and Meteorological Laboratory; role: Marine Scientist Speich, Sabrina Ecole Normale Supérieure Laboratoire de Météorologie Dynamique; role: Marine Scientist Meinen, Chris Atlantic Oceanographic and Meteorological Laboratory; role: Marine Scientist
Publisher	Department of Forestry, Fisheries and the Environment (2024)
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 raw data from a Pressure-equipped Inverted Echo Sounder (PIES) located at a depth of 4224m at location P3a (34.5000°S; 15.7878°E) along the South Atlantic Meridional Overturning Circulation (MOC) Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 1 October 2021 and 20 September 2023. 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 bottom-mounted, upward-looking, Pressure-equipped Inverted Echo Sounder (PIES) was deployed at a depth of 4224m at location P3a (34.5000°S; 15.7878°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 bottom pressure and acoustic travel time (Tau), between 1 October 2021 and 20 September 2023.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.13762023 Style
Temporal extent	01 Oct 2021 – 20 Sep 2023
Geographic extent	Cape Basin, South Atlantic Ocean Lat: -34.5 Lon: 15.7878
Vertical extent	Max: -4224 m Min: -4224 m
Keywords	moorings , PIES , Pressure-equipped Inverted Echo Sounder , SAMBA transect , SOUTH ATLANTIC OCEAN
Related resources	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 previous version of Long-term observations of daily acoustic travel time along the SAMBA transect at PIES Mooring P3a (October 2021 – September 2023) (10.15493/DEA.MIMS.13852023)

Cite 10.15493/DEA.MIMS.13762023