Seawater chromium concentrations and isotope compositions in the Southern Ocean during the austral summer of 2016/2017, on board the Antarctic Circumnavigation Expedition (ACE).

• Main Authors: Rickli, Jörg, Janssen, David J., Hassler, Christel, Ellwood, Michael, Jaccard, Samuel L.
• Format: Other/Unknown Material
• Language: English
• Published: Zenodo 2019
• Subjects: chromium isotope; Cr isotope; seawater; trace metal rosette; Southern Ocean; Drake Passage; Balleny Islands; Antarctica; Antarctic Circumnavigation Expedition; ACE; Antarc*; Antarctic; Mertz Glacier; Swiss Polar Institute
• Online Access: https://doi.org/10.5281/zenodo.3250980

Dataset abstract Dissolved seawater chromium (Cr) concentrations and stable isotope compositions measured on samples collected with a trace metal clean rosette system in the Southern Ocean. Stations TM 7 to TM 12 reflect a north-south transect from Hobart, Tasmania to Mertz Glacier in Antarctica. Stations TM 14 and TM 15 neighbour the Balleny Islands. Stations TM 18 and TM 20 are located in the Drake Passage. Water samples were collected down to a depth of 1000 metres. The water was filtered in a class 100 clean container aboard the ship through pre-rinsed Supor Acropak capsule filters (0.2 um). Subsequently the samples were acidified and stored at a pH < 2 for several months prior to analysis. Reported values therefore represent bulk seawater chromium (Cr III and Cr VI). The data was obtained using the double-spike technique. Dataset contents ace_chromium_isotope_concentration.csv, data file, comma-separated values data_file_header.txt, metadata, text format README.txt, metadata, text format Dataset license This chromium concentration and isotope composition dataset 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/ This work was supported by the Swiss National Science Foundation (SNSF – grant PP00P2_172915). The MC-ICP-MS at the Institute of Geological Sciences, University of Bern has been acquired within the framework of the NCCR project PlanetS. The Antarctic Circumnavigation Expedition was made possible by funding from the Swiss Polar Institute and Ferring Pharmaceuticals.