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Ice core chemistry database: an Antarctic compilation of sodium and sulfate records spanning the past 2000 years
journal contributionposted on 2023-08-25, 04:31 authored by Elizabeth R Thomas, Diana O Vladimirova, Dieter R Tetzner, B Daniel Emanuelsson, Nathan Chellman, Daniel A Dixon, Hugues Goosse, Mackenzie M Grieman, Amy CF King, Michael Sigl, Danielle UdyDanielle Udy, Tessa R Vance, Dominic A Winski, V Holly L Winton, Nancy AN Bertler, Akira Hori, Chavarukonam M Laluraj, Joseph R McConnell, Yuko Motizuki, Kazuya Takahashi, Hideaki Motoyama, Yoichi Nakai, Franciele Schwanck, Jefferson Cardia Simoes, Filipe Gaudie Ley Lindau, Mirko Severi, Rita Traversi, Sarah Wauthy, Cunde Xiao, Jiao Yang, Ellen Mosely-Thompson, Tamara V Khodzher, Ludmila P Golobokova, Alexey A Ekaykin
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 [SO42-], commonly measured ionic species. The database (10.5285/9E0ED16E-F2AB-4372-8DF3-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.
Publication titleEarth System Science Data
Department/SchoolGeography, Planning and Spatial Sciences, Oceans and Cryosphere
PublisherCOPERNICUS GESELLSCHAFT MBH