12 Dec 2022
12 Dec 2022
Status: this preprint is currently under review for the journal ESSD.

Ice core chemistry database: an Antarctic compilation of sodium and sulphate records spanning the past 2000 years

Elizabeth R. Thomas1, Diana O. Vladimirova1, Dieter R. Tetzner1, B. Daniel Emanuelsson1, Nathan Chellman2, Daniel A. Dixon3, Hugues Goosse4, Mackenzie M. Grieman5, Amy C. F. King1, Michael Sigl6, Danielle Udy7, Tessa R. Vance8, Dominic A. Winski3, V. Holly L. Winton9, Nancy A. N. Bertler9,10, Akira Hori11, Chavarukonam M. Laluraj12, Joseph R. McConnell2, Yuko Motizuki13, Kazuya Takahashi13, Hideaki Motoyama14, Yoichi Nakai13, Franciéle Schwanck15, Jefferson Cardia Simões15, Filipe Gaudie Ley Lindau15, Mirko Severi16, Rita Traversi16, Sarah Wauthy17, Cunde Xiao18, Jiao Yang19, Ellen Mosely-Thompson20, Tamara Khodzher21, Ludmila Golobokova21, and Alexey Ekaykin22 Elizabeth R. Thomas et al.
  • 1Ice Dynamics and Paleoclimate, British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
  • 2Division of Hydrologic Sciences, Desert Research Institute, Reno, NV, 89512, USA
  • 3Climate Change Institute, University of Maine, 5790 Bryand Global Science Center, Orono, ME, 04469, USA
  • 4Earth and Life Institute, Universite catholique de Louvain, Place Pasteur 3, 1348 Louvain-la-Neuve, Belgium
  • 5Department of Chemistry, Reed College, 3203 Woodstock Blvd., Portland, Oregon, 97202, USA
  • 6Climate and Environmental Physics (CEP), Physics Institute & Oeschger Centre for Climate Change Research (OCCR), University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
  • 7Institute for Marine and Antarctic Studies, University of Tasmania, 20 Castray Esplanade, Battery Point TAS 7004, Australia
  • 8Australian Antarctic Program Partnership, Institute for Marine & Antarctic Studies, University of Tasmania, Hobart, Australia
  • 9Antarctic Research Centre, Victoria University of Wellington, Kelburn Parade, Kelburn, Wellington 6021, New Zealand
  • 10National Ice Core Facility, GNS Science, 30 Gracefield Rd, Gracefield 5040, New Zealand
  • 11Kitami Institute of Technology, 090-8507, Japan
  • 12National Centre for Polar and Ocean Research (NCPOR), Ministry of Earth Sciences, Vasco-da Gama, Goa 403804, India
  • 13RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
  • 14National Institute of Polar Research, Tachikawa, Tokyo 190-8518, Japan
  • 15Centro Polar e Climático, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91501-970, Brazil
  • 16Chemistry Dept. "Ugo Schiff", University of Florence, 50019, Sesto, Florence, Italy
  • 17Laboratoire de Glaciologie, Department Geosciences, Environnement et Societe, Universite Libre de Bruxelles, 1050 Brussels, Belgium
  • 18State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, China
  • 19State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
  • 20Byrd Polar and Climate Research Center, The Ohio State University, 1090 Carmack Rd. Columbus OH 43210 USA
  • 21Limnological Institute of Siberian Branch of the Russian Academy of Sciences), Irkutsk, 664033, Russia
  • 22Arctic and Antarctic Research Institute), 38 Bering st, St Petersburg, 199397, Russia

Abstract. Changes in sea ice conditions and atmospheric circulation over the Southern Ocean play an important role in modulating Antarctic climate. However, observations of both sea ice and wind conditions are limited in Antarctica and the Southern Ocean, both temporally and spatially. Ice core chemistry data can be used to reconstruct changes over annual, decadal, and millennial timescales. To facilitate sea ice and wind reconstructions, the CLIVASH2k working group has compiled a database of two species, sodium [Na+] and sulphate [SO42-], commonly measured ionic species. The database contains records from 105 Antarctic ice cores, containing records with a maximum age duration of 2000 years. An initial filter has been applied, based on evaluation against climate observations, to identify sites suitable for reconstructing past sea ice conditions, wind strength, or atmospheric circulation.

Elizabeth R. Thomas et al.

Status: open (until 18 Feb 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on essd-2022-368', Kenneth Mankoff, 12 Dec 2022 reply

Elizabeth R. Thomas et al.

Elizabeth R. Thomas et al.


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Short summary
The concentration of sodium and sulphate measured in Antarctic ice cores is related to changes in both sea ice and winds. Here we have compiled a database of sodium and sulphate records from 105 ice core sites in Antarctica. The records span all, or part, of the past 2000 years. The records will improve our understanding of how winds and sea ice have changed in the past, and how they have influenced the climate of Antarctica over the past 2000 years.