Name: Processed Expendable Bathythermograph (XBT) casts collected during the Marion Island Relief Voyage on the SA Agulhas II Voyage 057, May 2023
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.11462023

Title	Processed Expendable Bathythermograph (XBT) casts collected during the Marion Island Relief Voyage on the SA Agulhas II Voyage 057, May 2023
Project	South Atlantic Meridional Overturning Circulation (SAMOC-SA)
Authors	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
Publisher	Department of Forestry, Fisheries and the Environment (2023)
Contributors	Contact Person: Marcel van den Berg Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: mvandenberg.dea@gmail.com
Abstract	Here we present 31 processed Expendable Bathythermograph (XBT) casts collected in the South West Indian Ridge area and along the Crossroads Transect, between 14 May 2023 and 18 May 2023, during the 2023 Marion Relief Voyage on the SA Agulhas II Voyage 057. 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. The Crossroads monitoring line, directly under the altimetry track N198, is sampled annually during the Marion Relief voyages, using a combination of Conductivity-Temperature-Depth (CTD) stations and XBT casts, where the XBT casts are done, at set intervals, between CTD stations to complement the CTD data.
Methods	Sippican WinMK21 Data Acquisition and Post-Processing Software is used for data collection of T7 Deep Blue Expendable Bathythermograph (XBT) probes, rated to 1000m. The data is collected in .bin format and then converted to .txt files using the software. The *.txt files contain some metadata at the top of file, but not always fully completed by operators. The processed data has been edited, using the raw text data, where temperature spikes and XBT signal loss, at end of cast, were removed. Metadata containing cast details has been added to the top of the file for the 31 XBT casts.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.11462023 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	14 May 2023 – 17 May 2023
Geographic extent	Prince Edward Islands, South Africa North: -34.998 South: -47.5 West: 18.5 East: 43.0
Vertical extent	Max: -950 m Min: -0.5 m
Keywords	Crossroads monitoring line, INDIAN OCEAN, temperature, XBT
Related resources	This digital object is new version of Raw Expendable Bathythermograph (XBT) casts collected during the Marion Island Relief Voyage on the SA Agulhas II Voyage 057, May 2023 (10.15493/DEA.MIMS.11222023) This digital object is part of Marion Island Relief Voyage on the SA Agulhas II Voyage 057, May 2023 (10.15493/DEA.MIMS.11232023)

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