Iron (Fe) concentrations and fluxes in TALDICE ice core 0.6 to 314 ky BP, supplement to: Vallelonga, Paul T; Barbante, Carlo; Cozzi, Giulio; Gabrieli, Jacopo; Schüpbach, Simon; Spolaor, Andrea; Turetta, Clara (2013): Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr. Climate of the Past, 9, 597-604

DOI

Atmospheric fluxes of iron (Fe) over the past 200 kyr are reported for the coastal Antarctic Talos Dome ice core, based on acid leachable Fe concentrations. Fluxes of Fe to Talos Dome were consistently greater than those at Dome C, with the greatest difference observed during interglacial climates. We observe different Fe flux trends at Dome C and Talos Dome during the deglaciation and early Holocene, attributed to a combination of deglacial activation of dust sources local to Talos Dome and the reorganisation of atmospheric transport pathways with the retreat of the Ross Sea ice shelf. This supports similar findings based on dust particle sizes and fluxes and Rare Earth Element fluxes. We show that Ca and Fe should not be used as quantitative proxies for mineral dust, as they all demonstrate different deglacial trends at Talos Dome and Dome C. Considering that a 20 ppmv decrease in atmospheric CO2 at the coldest part of the last glacial maximum occurs contemporaneously with the period of greatest Fe and dust flux to Antarctica, we confirm that the maximum contribution of aeolian dust deposition to Southern Ocean sequestration of atmospheric CO2 is approximately 20 ppmv. Depth is TOP depth [m] of sample

Identifier
DOI https://doi.org/10.1594/PANGAEA.808940
Related Identifier https://doi.org/10.5194/cp-9-597-2013
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.808940
Provenance
Creator Vallelonga, Paul T; Barbante, Carlo; Cozzi, Giulio; Gabrieli, Jacopo; Schüpbach, Simon; Spolaor, Andrea; Turetta, Clara
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2013
Funding Reference Seventh Framework Programme
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 6038 data points
Discipline Earth System Research
Spatial Coverage (159.067 LON, -72.783 LAT); Antarctica
Temporal Coverage Begin 2005-01-01T00:00:00Z
Temporal Coverage End 2008-12-31T00:00:00Z