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

Konecky, Bronwen L.; McKay, Nicholas P.; Churakova (Sidorova), Olga V.; Comas-Bru, Laia; Dassié, Emilie P.; DeLong, Kristine L.; Falster, Georgina M.; Fischer, Matt J.; Jones, Matthew D.; Jonkers, Lukas; Kaufman, Darrell S.; Leduc, Guillaume; Managave, Shreyas R.; Martrat, Belen; Opel, Thomas; Orsi, Anais J.; Partin, Judson W.; Sayani, Hussein R.; Thomas, Elizabeth K.; Thompson, Diane M.; Tyler, Jonathan J.; Abram, Nerilie J.; Atwood, Alyssa R.; Conroy, Jessica L.; Kern, Zoltán; Porter, Trevor J.; Stevenson, Samantha L.; von Gunten, Lucien

Abstract

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 (δ18O) or hydrogen (δ2H) isotopic composition of environmental waters, which reflect hydroclimate changes over the CE. The Iso2k database contains 756 isotope records from the terrestrial and marine realms, including: glacier and ground ice (205); speleothems (68); corals, sclerosponges, and mollusks (145); wood (81); lake sediments and other terrestrial sediments (e.g., loess) (158); and marine sediments (99). Individual datasets have temporal resolutions ranging from sub-annual to centennial, and include chronological data where available. A fundamental feature of the database is its comprehensive metadata, which will assist both experts and non-experts in the interpretation of each record and in data synthesis. Key metadata fields have standardized vocabularies to facilitate comparisons across diverse archives and with climate model simulated fields. This is the first global-scale collection of water isotope proxy records from multiple types of geological and biological archives. It is suitable for evaluating hydroclimate processes through time and space using large-scale synthesis, model-data intercomparison and (paleo)data assimilation. The Iso2k database is available for download at: https://doi.org/10.6084/m9.figshare.11553162 (McKay and Konecky, 2020).

Citation

Konecky, B. L., McKay, N. P., Churakova (Sidorova), O. V., Comas-Bru, L., Dassié, E. P., DeLong, K. L., Falster, G. M., Fischer, M. J., Jones, M. D., Jonkers, L., Kaufman, D. S., Leduc, G., Managave, S. R., Martrat, B., Opel, T., Orsi, A. J., Partin, J. W., Sayani, H. R., Thomas, E. K., Thompson, D. M., …von Gunten, L. The Iso2k Database: A global compilation of paleo-δ18O and δ2H records to aid understanding of Common Era climate

• Working Paper Type: Working Paper
• Deposit Date: Feb 21, 2020
• Publicly Available Date: Mar 24, 2020
• Public URL: https://nottingham-repository.worktribe.com/output/4007218
• Publisher URL: https://essd.copernicus.org/preprints/essd-2020-5/essd-2020-5.pdf