EPICA Dome C Ice Core Termination I d13CO2 Data Lourantou, A.; Lavric, J.V.; Köhler, P.; Barnola, J.M.; Paillard, D.; Michel, E.; Raynaud, D.; Chappellaz, J.A. Lourantou, A. Lavric, J.V. Köhler, P. Barnola, J.M. Paillard, D. Michel, E. Raynaud, D. Chappellaz, J.A. Last Glacial Maximum carbon cycle earth science/paleoclimate/climate forcing|ice cores (carbon dioxide,bulk atmosphere,null,parts per million,null,climate forcing|ice cores,corrected,null,N,null) earth science/paleoclimate/climate forcing|ice cores (carbon dioxide,bulk atmosphere,one standard deviation,parts per million,null,climate forcing|ice cores,null,null,N,null) earth science/paleoclimate/ice cores (delta 13C,carbon dioxide,one standard deviation,per mil,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (delta 13C,carbon dioxide,null,per mil PDB,null,ice cores,corrected,null,N,null) earth science/paleoclimate/climate forcing|ice cores (carbon dioxide,bulk atmosphere,null,parts per million,null,climate forcing|ice cores,null,null,N,null) earth science/paleoclimate/ice cores (depth,null,null,meter,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (delta 13C,carbon dioxide,null,per mil PDB,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (gas age,null,null,calendar year before present,null,ice cores,null,null,N,null) earth science/paleoclimate/ice core earth science/paleoclimate/ice core (EPICA Dome C>LATITUDE -75.1>LONGITUDE 123.4) The causes of the ~80 ppmv increase of atmospheric carbon dioxide (CO2) during the last glacial-interglacial climatic transition remain debated. We analyzed the parallel evolution of CO2 and its stable carbon isotopic ratio (d13CO2) in the European Project for Ice Coring in Antarctica (EPICA) Dome C ice core to bring additional constraints. Agreeing well but largely improving the Taylor Dome ice core record of lower resolution, our d13CO2 record is characterized by a W shape, with two negative d13CO2 excursions of 0.5‰ during Heinrich 1 and Younger Dryas events, bracketing a positive d13CO2 peak during the Bølling/Allerød warm period. The comparison with marine records and the outputs of two C cycle box models suggest that changes in Southern Ocean ventilation drove most of the CO2 increase, with additional contributions from marine productivity changes on the initial CO2 rise and d13CO2 decline and from rapid vegetation buildup during the CO2 plateau of the Bølling/Allerød. STUDY NOTES: High resolution record of CO2 and d13CO2 across Termination I from the European Project for Ice Coring in Antarctica (EPICA) Dome C (EDC) ice core. This record is compared to existing lower-resolution EPICA Dome C CO2 data and d13CO2 from the Taylor Dome Ice core, in order to evaluate mechanisms for the Termination I CO2 rise. The experimental procedure of extraction of CO2 and its stable isotopes, as well as the synchronization of EDC age scale to GICC05, are described in the methods section of Lourantou et al. 2010. An even more detailed description can be found in Lourantou, 2009 (PhD thesis, can be found online at: http://tel.archives-ouvertes.fr/tel-00370658/fr/) Termination I is the transition from the Last Glacial Maximum (~20 kyr B.P.) to the Early Holocene (~10 kyr B.P). NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Lourantou, A. Investigator : Lavric, J.V. Investigator : Köhler, P. Investigator : Barnola, J.M. Investigator : Paillard, D. Investigator : Michel, E. Investigator : Raynaud, D. Investigator : Chappellaz, J.A. 2010-06-29 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/9972 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc2010d13co2.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc2010d13co2.xls https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc2010d13co2.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc2010d13co2.xls English https://www.ncdc.noaa.gov/paleo/study/9972 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc2010d13co2.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc2010d13co2.xls Lourantou, A., J.V. Lavric, P. Köhler, J.-M. Barnola, D. Paillard, E. Michel, D. Raynaud, and J. Chappellaz. 2010. Constraint of the CO2 rise by new atmospheric carbon isotopic measurements during the last deglaciation. Global Biogeochem. Cycles, 24, GB2015. doi:10.1029/2009GB003545 START YEAR: 22008 cal yr BP * END YEAR: 8756 cal yr BP 123.4 -75.1 123.4 -75.1