A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the glacial inception ...

• Main Authors: Schneider, Robert, Schmitt, Jochen, Koehler, Peter, Joos, Fortunat, Fischer, Hubertus
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2013
• Subjects: European Project for Ice Coring in Antarctica EPICA; Integrierte Analyse zwischeneiszeitlicher Klimadynamik INTERDYNAMIK; Antarctic; East Antarctica; Talos Dome; Antarc*; Antarctica; EPICA
• Online Access: https://dx.doi.org/10.1594/pangaea.817041; https://doi.pangaea.de/10.1594/PANGAEA.817041

The reconstruction of the stable carbon isotope evolution in atmospheric CO2 (d13Catm ), as archived in Antarctic ice cores, bears the potential to disentangle the contributions of the different carbon cycle fluxes causing past CO2 variations. Here we present a new record of d13Catm before, during and after the Marine Isotope Stage 5.5 (155 000 to 105 000 years BP). The record was derived with a well established sublimation method using ice from the EPICA Dome C (EDC) and the Talos Dome ice cores in East Antarctica. We find a 0.4 permil shift to heavier values between the mean d13Catm level in the Penultimate (~ 140 000 years BP) and Last Glacial Maximum (~ 22 000 years BP), which can be explained by either (i) changes in the isotopic composition or (ii) intensity of the carbon input fluxes to the combined ocean/atmosphere carbon reservoir or (iii) by long-term peat buildup. Our isotopic data suggest that the carbon cycle evolution along Termination II and the subsequent interglacial was controlled by ... : Supplement to: Schneider, Robert; Schmitt, Jochen; Koehler, Peter; Joos, Fortunat; Fischer, Hubertus (2013): A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the glacial inception. Climate of the Past, 9(6), 2507-2523 ...