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
], commonly measured ionic species. The database (https://doi.org/10.5285/9E0ED16E-F2AB4372-8DF3-FDE7E388C9A7; 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.
Authors: Thomas, Elizabeth R. ORCID record for Elizabeth R. Thomas, Vladimirova, Diana O. ORCID record for Diana O. Vladimirova, Tetzner, Dieter R. ORCID record for Dieter R. Tetzner, Emanuelsson, B. Daniel ORCID record for B. Daniel Emanuelsson, Chellman, Nathan, Dixon, Daniel A., Goosse, Hugues, Grieman, Mackenzie M., King, Amy C.F. ORCID 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.