{"references": ["Janssen, D.J., Sieber, M., Ellwood, M.J., Conway, T.M., Barrett, P.M., Chen, X., de Souza, G.F., Hassler, C.S., Jaccard, S.L. (2020). Trace metal and nutrient dynamics across broad biogeochemical gradients in the Indian and Pacific sectors of the Southern Ocean. Marine Chemistry. https://doi.org/10.1016/j.marchem.2020.103773", "Abualhaija, M.M., van den Berg, C.M.G., 2014. Chemical speciation of iron in seawater using catalytic cathodic stripping voltammetry with ligand competition against salicylaldoxime. Mar. Chem. 164, 60\u201374. doi:10.1016/j.marchem.2014.06.005.", "Mahmood, A., Abualhaija, M.M., van den Berg, C.M.G., Sander, S.G., 2015. Organic speciation of dissolved iron in estuarine and coastal waters at multiple analytical windows. Mar. Chem. 177, 706\u2013719. doi:10.1016/j.marchem.2015.11.001.", "Maldonado, M.T., Strzepek, R.F., Sander, S., Boyd, P.W., 2005. Acquisition of iron bound to strong organic complexes, with different Fe binding groups and photochemical reactivities, by plankton communities in Fe-limited subantarctic waters. Global Biogeochem. Cycles 19. doi:10.1029/2005GB002481.", "Hassler, Christel, & Ellwood, Michael. (2019). Nutrient concentration in seawater samples, collected from the underway supply, CTD and trace metal rosettes in the Southern Ocean during the austral summer of 2016/2017, on board the Antarctic Circumnavigation Expedition (ACE). (Version 1.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.2616606", "Janssen, David J, Sieber, Matthias, Ellwood, Michael J, Conway, Tim M, Barrett, Pamela M, Chen, Xiaoyu, Hassler, Christel S, Jaccard, Samuel L. (2020). Dissolved trace metal (Fe, Ni, Cu, Zn, Cd, Pb) concentrations in the Indian and Pacific sectors of the Southern Ocean from the Antarctic Circumnavigation Expedition (2016-2017) (Version Version 1.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.3634411", "David W H Walton, & Jenny Thomas. (2018, November 22). Cruise Report - Antarctic Circumnavigation Expedition (ACE) 20th December 2016 - 19th March 2017 (Version 1.0). Zenodo. https://doi.org/10.5281/zenodo.1443511"]}

Dataset abstract Fe chemical speciation of filtered seawater data are presented in this dataset, resulting from samples collected from a trace metal rosette on board the Antarctic Circumnavigation Expedition (ACE). During the austral summer of 2016/2017, seawater samples were collected from the Atlantic and Indian Ocean sectors of the Southern Ocean and dissolved Fe concentration, iron-binding organic ligands concentration and the conditional stability constant of Fe’ are presented here. Dataset contents ace_fe_chemical_speciation.csv, data file, comma-separated values figure1.pdf, metadata, portable document format data_file_header.txt, metadata, text README.txt, metadata, text Dataset license This Fe chemical speciation dataset from ACE is made available under the Creative Commons Attribution 4.0 International License (CC BY 4.0) whose full text can be found at https://creativecommons.org/licenses/by/4.0/

The Antarctic Circumnavigation Expedition was made possible by funding from the Swiss Polar Institute and Ferring Pharmaceuticals. Hassler and Cabanes were supported by the Swiss National Science Foundation, FNS PP00P2_138955.