δO2/N2 and δ18O of O2 from EPICA Dome C ice core (Antarctica) (0-800 ka)

We present the full compilation of δO2/N2 and δ18O of O2 data measured in the gas phase on the EPICA Dome C ice core from 1420 m to the bottom (3191 m), hence covering the last 800 kyr. The EPICA Dome C ice core has been drilled in Antarctica (-75.1°S; 123.395°E; 3233 m elevation) between 1996 and 2004 and measurements were performed from 2001 to 2022. Some of the data were already presented in previous published studies (Dreyfus et al., 2007, 2008; Landais et al., 2012; Bazin et al., 2016; Extier et al., 2018) but corrections were performed in the present data file. The new highly-resolved datasets have been measured over five glacial terminations (TII, III, IV, V and VI) by Grisart (2023) using a dual inlet Delta 219 V plus (Thermo Electron Corporation) mass spectrometer at the LSCE. They are combined to previous published data to obtain the final compilation of the δ18O of O2 and δO2/N2 records covering the last 800 kyr.我们在此呈现EPICA Dome C冰芯（EPICA Dome C ice core）1420米至底部（3191米）的气相组分中测得的氧气δO₂/N₂同位素比值与δ¹⁸O_O₂同位素数据的完整汇编数据集，该数据集覆盖过去80万年。该冰芯于1996年至2004年间在南极（南纬75.1°；东经123.395°；海拔3233米）钻取，相关测试工作于2001年至2022年间完成。其中部分数据已在既往发表的研究（Dreyfus等人，2007、2008；Landais等人，2012；Bazin等人，2016；Extier等人，2018）中披露，但本数据文件中的相关数据已完成校正。Grisart（2023）于气候与环境科学实验室（Laboratoire des Sciences du Climat et de l'Environnement, LSCE）使用双进样口Delta 219 V plus型质谱仪（赛默飞世尔科技公司，Thermo Electron Corporation），针对5次冰消期（TII、III、IV、V及VI）完成了高分辨率新数据集的测试工作。将该新数据集与既往发表的相关数据整合后，最终得到覆盖过去80万年的氧气δ¹⁸O与δO₂/N₂同位素记录完整汇编数据集。