Extended Data Fig. 1: A comparison of the WD to other ice core records of atmospheric CO2.
From: Abrupt changes in the global carbon cycle during the last glacial period
A comparison of ice core CO2 records including WD (this study), Byrd19, Taylor Glacier23,38, Talos Dome20, EDC (mechanical crushing58 and sublimation data59), Siple Dome24,26 and EDML20. All the ice core records have been smoothed with splines to preserve the millennial-scale variability and then subtracted from the WD record to show any offsets. Note that millennial-scale differences in the CO2 offset are susceptible to small errors in the various ice core chronologies (AICC2012) relative to the WD2014. Sub-panels show the raw data for each individual core record.
