DOI: 10.5285/96dc0dd7-b5db-4444-97af-8ddfab1e7f78
title: Records of isotopes, anions, cations and organic compounds measured in the Bouvet Island ice core for the time period 2001-2016

description: These data files contain the records of isotopes, anions, cations and organic compounds measured in the Bouvet Island ice core. The Bouvet ice core was collected as part of the Antarctic Circumnavigation Expedition (ACE) 2016-2017, and is the first ever ice core collected on the island. All analyses was carried out at the British Antarctic Survey, Cambridge, United Kingdom between 2016 and 2018. Analyses were carried out by analytical staff and a PhD student. Isotopes were measured using a Picarro instrument, anions and cations on a Dionex Intergrion Ion Chromatograph, and organics using High-Performance Liquid Chromotography Mass Spectrometry (HPLC-MS). Isotopes, anions and cations are measured as discreet 5cm core samples, while organics are measured at annual resolution core samples. This data forms part of a suite of ice cores from the sub-Antarctic islands collected on the ACE cruise 2016-2017, for which anion, cation and isotope data will be made available separately. Funding source Work by Amy King was jointly supported by Selwyn College, Cambridge, and the NERC Doctoral Training Programme [grant number NE/L002507/1]. ACE and Elizabeth Thomas received funding from Ecole Polytechnique Federale de Lausanne, the Swiss Polar Institute, and Ferring Pharmaceuticals Inc. Joel Pedro acknowledges support from the European Research Council under the European Community's Seventh Framework Programme (FP7/2007e2013)/ERC grant agreement 610055 as part of the ice2ice project.
description: A cruise report for the Antarctic Circumnavigation Expedition can be found at: Walton, D. W. H., & Thomas, J. (2018). Cruise Report - Antarctic Circumnavigation Expedition (ACE) 20th December 2016 - 19th March 2017, 390. https://doi.org/10.5281/zenodo.1443511 Methods of analyses for anions and cations can be found at: -Littot, G. C., Mulvaney, R., Rothlisberger, R., Udisti, R., Wolff, E. W., Castellano, E., et al. (2002). Comparison of analytical methods used for measuring major ions in the EPICA Dome C (Antarctica) ice core. Annals of Glaciology, 35, 299-305 -Mulvaney, R., Pasteur, E. C., Peel, D. A., Saltzman, E. S., & Whung, P.-Y. (1992). The ratio of MSA to non-sea-salt sulphate in Antarctic Peninsula ice cores. Tellus B, 44(4), 295-303. https://doi.org/10.1034/j.1600-0889.1992.t01-2-00007.x -Thomas, E. R., & Abram, N. J. (2016). Ice core reconstruction of sea ice change in the Amundsen-Ross Seas since 1702 A.D. Geophysical Research Letters, 43(10), 5309-5317. https://doi.org/10.1002/2016GL068130 Methods of analyses for organic compounds can be found at: King, A. C. F., Giorio, C., Wolff, E., Thomas, E., Karroca, O., Roverso, M., et al. (2019). A new method for the determination of primary and secondary terrestrial and marine biomarkers in ice cores using liquid chromatography high- resolution mass spectrometry. Talanta, 194, 233?242. https://doi.org/10.1016/j.talanta.2018.10.042
description: Organic compounds are presented at annual resolution. Isotopes and anions/cations are presented at 5cm sample lengths throughout the core. Instrumentation: Anions and cations: Reagent-free Dionex ICS-2500 anion and IC 2000 cation system. Organics: HPLC-ESI-HRMS with an Accela system HPLC (Thermo Scientific, Bremen, Germany) coupled to an LTQ Velos Orbitrap (Thermo Scientific, Bremen, Germany). Isotopes: Picarro.
description: Please refer to the publications listed in 'Methods' for details on method validation.