DOI: 10.5281/zenodo.1494923
title: Seawater salinity sample measurements from the Antarctic Circumnavigation Expedition (ACE)

description: <strong>Dataset abstract</strong> This data set contains salinity measurements from discrete seawater samples that were collected in the Southern Ocean (south of 30deg S) during the Antarctic Circumnavigation Expedition (ACE). 657 samples were collected during the period December 24th, 2016 and March 18th, 2017 in the Southern Ocean from the surface ocean using the ship's underway line (UW; 328 samples) and in vertical profiles using Niskin bottles mounted on the CTD rosette (273 samples). A few additional samples (56) were collected from a parallel cast with a trace-metal rosette, with a bucket, and as duplicates to ensure data quality. All samples were analyzed for their salinity and results are reported on the Practical Salinity Scale 1978 (PSS-78; Sea-Bird Electronics, Inc., 1989). Measurements were performed on a Guildline Autosal Laboratory Salinometer 8400(B) at CSIRO (Hobart, Australia) for samples collected during leg 1, and on a OPTIMARE Precision Salinometer (OPS) at the Alfred Wegener Institute (Bremerhaven, Germany) for samples collected during legs 2 and 3. This circumpolar data set provides insights into the hydrological cycle of the Southern Ocean and the processes (precipitation, evaporation, sea-ice melting and freezing, ice-berg and land-ice melting) that determine the salinity of a certain water mass. It is being used to calibrate the CTD sensor vertical profiles (Henry et al., 2020) and thermosalinograph sensor underway measurements (Haumann et al., 2020) from the ACE cruise. <strong>Dataset contents</strong> Processed Data ace_18_data_salinity_ctd_20200812.csv, text format; contains salinity measurements of seawater samples collected from the Niskin bottles mounted on the CTD rosette ace_18_data_salinity_uw_20200812.csv, text format; contains salinity measurements of seawater samples collected from the underway line ace_18_data_salinity_other_20200812.csv, text format; contains salinity measurements of miscellaneous samples: Duplicate seawater samples; seawater bucket sample from Cumberland Bay, South Georgia; seawater samples from Niskin bottles mounted on the trace-metal rosette. Metadata data_file_header.txt, metadata, text format README.txt, metadata, text format figure*.pdf, metadata, portable document format <strong>Dataset license</strong> This physical and biogeochemical oceanography dataset is made available under the Creative Commons Attribution 4.0 License (CC BY 4.0) whose full text can be found at https://creativecommons.org/licenses/by/4.0/
description: This research was supported by Swiss National Science Foundation (SNSF) grant numbers PZ00P2_142684, P2EZP2_175162, and P400P2_186681, and a grant from the BNP Paribas Foundation. I.G. thanks FCT/ MCTES for the financial support to CESAM (UIDP/50017/2020+UIDB/50017/2020) through national funds. We thank Kendall Sherrin (CSIRO) for processing the leg 1 samples, and Susan Becker and Lynne Talley (Scripps) for lending us their sampling bottles. We thank Stefan Vogel for the Autosal cleaning/checking and logistics in Hobart and Gwenael Renard for assistance with samples/cargo handling in Bremerhaven. We thank Yvonne Firing and Rob Craft (NOC) for providing Autosal training. It would have not been possible to assemble this data set without their help. The Antarctic Circumnavigation Expedition was made possible by funding from the Swiss Polar Institute and Ferring Pharmaceuticals.
description: {"references": ["Haumann, F. A., Leonard, K., Meredith, M. P., Arrowsmith, C., Gorodetskaya, I. V., Hutchings, J., \u2026 Weber, Y. (2019): Seawater stable isotope sample measurements from the Antarctic Circumnavigation Expedition (ACE) (Version 1.0) [Data set]. Zenodo. http://doi.org/10.5281/zenodo.1494915", "Haumann, F. A., Robinson, C., Thomas, J., Hutchings, J., Pina Estany, C., Tarasenko, A., \u2026 Leonard, K. (2020): Physical and biogeochemical oceanography data from underway measurements with an AquaLine Ferrybox during the Antarctic Circumnavigation Expedition (ACE). (Version 1.0) [Data set]. Zenodo. http://doi.org/10.5281/zenodo.3660852", "Henry, T., Robinson, C., Haumann, F. A., Thomas, J., Hutchings, J., Schuback, N., Tsukernik, M. and Leonard, K. (2020) Physical and biogeochemical oceanography from Conductivity, Temperature, Depth (CTD) rosette deployments during the Antarctic Circumnavigation Expedition (ACE). (Version 1.1). [Data set]. Zenodo. https://doi.org/10.5281/zenodo.3813646", "Sea-Bird Electronics, Inc. (1989): 1978 Practical Salinity Scale. Application Note No. 14. https://www.seabird.com/asset-get.download.jsa?code=250991", "Thomas, J. and Pina Estany, C. (2019): Quality-checked, one-minute resolution cruise track of the Antarctic Circumnavigation Expedition (ACE) undertaken during the austral summer of 2016/2017. (Version 1.0) [Data set]. Zenodo. http://doi.org/10.5281/zenodo.3483166", "Walton, D. W. H. and Thomas, J. (2018). Cruise Report - Antarctic Circumnavigation Expedition (ACE) 20th December 2016 - 19th March 2017 (Version 1.0). Zenodo. http://doi.org/10.5281/zenodo.1443511"]}