The Iso2k database: A global compilation of paleo-δ18O and δ2H records to aid understanding of Common Era climate

Reconstructions of global hydroclimate during the Common Era (CE; the past-2000 years) are important for providing context for current and future global environmental change. Stable isotope ratios in water are quantitative indicators of hydroclimate on regional to global scales, and these signals are encoded in a wide range of natural geologic archives. Here we present the Iso2k database, a global compilation of previously published datasets from a variety of natural archives that record the stable oxygen (18O) or hydrogen (2H) isotopic compositions of environmental waters, which reflect hydroclimate changes over the CE. The Iso2k database contains 759 isotope records from the terrestrial a…