Talos Dome Ice Core 314KYr Iron Flux Data Vallelonga, P.; Barbante, C.; Cozzi, G.; Gabrieli, J.; Schüpbach, S.; Spolaor, A.; Turetta, C. Vallelonga, P. Barbante, C. Cozzi, G. Gabrieli, J. Schüpbach, S. Spolaor, A. Turetta, C. carbon cycle earth science/paleoclimate/ice cores (depth at sample start,null,null,meter,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (accumulation rate,bulk ice,null,centimeter per year,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (ice age,null,null,calendar kiloyear before present,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (non-sea-salt calcium,bulk ice,null,milligram per square meter per year,null,ice cores,null,continuous flow analysis,N,x10-2 units) earth science/paleoclimate/ice cores (sample identification,null,null,null,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (iron,bulk ice,null,parts per billion,null,ice cores,null,continuous flow analysis|inductively-coupled plasma field sector mass spectrometry,N,null) earth science/paleoclimate/ice cores (iron,bulk ice,null,milligram per square meter per year,null,ice cores,null,continuous flow analysis|inductively-coupled plasma field sector mass spectrometry,N,x10-2 units) earth science/paleoclimate/ice core (Talos Dome TALDICE>LATITUDE -72.8166>LONGITUDE 159.1833) 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. STUDY NOTES: 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Vallelonga, P. Investigator : Barbante, C. Investigator : Cozzi, G. Investigator : Gabrieli, J. Investigator : Schüpbach, S. Investigator : Spolaor, A. Investigator : Turetta, C. 2013-03-15 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/14115 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/talos/taldice2013fe.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/talos/taldice2013fe.txt English https://www.ncdc.noaa.gov/paleo/study/14115 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/talos/taldice2013fe.txt Vallelonga, P., C. Barbante, G. Cozzi, J. Gabrieli, S. Schüpbach, A. Spolaor, and C. Turetta. 2013. Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr. Climate of the Past, Vol. 9, pp. 597-604. DOI: 10.5194/cp-9-597-2013 START YEAR: 314100 cal yr BP * END YEAR: 665 cal yr BP 159.1833 -72.8166 159.1833 -72.8166