When recording historic levels of CO2 concentration, records from air bubbles in Antarctic ice cores are regarded as the gold standard for paleo-atmospheric global CO2 concentrations during past interglacial and glacial periods over the last 800,000 years. Antarctic ice-core data are openly available from the National Centers for Environmental Information (NCEI) and have been studied… Continue Reading
Renee Hannon – 24 June 2022 Introduction This post examines sample spacing for CO2 measurements in Antarctic ice cores during the past 800,000 years to better understand if gaps in sampling are too large to capture centennial fluctuations. The IPCC states: “Although ice core records present low-pass filtered time series due to gas diffusion and gradual… Continue Reading