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

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, prior to the satellite era (1970 onwards). 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 (CLimate Variability in Antarctica and the Southern Hemisphere over the past 2000 years) working group has compiled a database of two species, sodium [Na+] and sulfate [SO2− 4 ], commonly measured ionic species. The database (; Thomas et al., 2022) comprises 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 sea ice concentration, geopotential height (500 hPa), and surface wind fields to identify sites suitable for reconstructing past sea ice conditions, wind strength, or atmospheric circulation.


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Authors: Thomas, Elizabeth R. ORCIDORCID record for Elizabeth R. Thomas, Vladimirova, Diana O. ORCIDORCID record for Diana O. Vladimirova, Tetzner, Dieter R. ORCIDORCID record for Dieter R. Tetzner, Emanuelsson, B. Daniel ORCIDORCID record for B. Daniel Emanuelsson, Chellman, Nathan, Dixon, Daniel A., Goosse, Hugues, Grieman, Mackenzie M., King, Amy C.F. ORCIDORCID record for Amy C.F. King, Sigl, Michael, Udy, Danielle G., Vance, Tessa R., Winski, Dominic A., Winton, V. Holly L., Bertler, Nancy A.N., Hori, Akira, Laluraj, Chavarukonam M., McConnell, Joseph R., Motizuki, Yuko, Takahashi, Kazuya, Motoyama, Hideaki, Nakai, Yoichi, Schwanck, Franciéle, Simões, Jefferson Cardia, Gaudie Ley Lindau, Filipe, Severi, Mirko, Traversi, Rita, Wauthy, Sarah, Xiao, Cunde, Yang, Jiao, Mosely-Thompson, Ellen, Khodzher, Tamara V., Golobokova, Ludmila P., Ekaykin, Alexey A.

On this site: Amy King, Diana Vladimirova, Dieter Tetzner, Liz Thomas
20 June, 2023
Earth System Science Data / 15
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