Articles | Volume 18, issue 2
https://doi.org/10.5194/essd-18-1225-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-1225-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description article
| 
16 Feb 2026
Data description article |
| 16 Feb 2026
| 16 Feb 2026
A complete database of AMS radiocarbon estimates from Lake Baikal sediment cores with a lake-wide assessment of TOC age offsets
Samuel R. S. Newall
CORRESPONDING AUTHOR
Department of Earth Science, University of California, Santa Barbara, CA 93106, USA
Anson W. Mackay
Department of Geography, Environmental Change Research Centre, UCL, London, WC1E 6BT, UK
Natalia Piotrowska
Division of Geochronology and Environmental Isotopes, Institute of Physics – CSE, Silesian University of Technology, Konarskiego 22B, 44-100 Gliwice, Poland
Maarten Blaauw
School of Natural and Built Environment, Queen's University Belfast, Belfast, BT7 1NN, UK
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Philip Meister, Anne Alexandre, Hannah Bailey, Philip Barker, Boris K. Biskaborn, Ellie Broadman, Rosine Cartier, Bernhard Chapligin, Martine Couapel, Jonathan R. Dean, Bernhard Diekmann, Poppy Harding, Andrew C. G. Henderson, Armand Hernandez, Ulrike Herzschuh, Svetlana S. Kostrova, Jack Lacey, Melanie J. Leng, Andreas Lücke, Anson W. Mackay, Eniko Katalin Magyari, Biljana Narancic, Cécile Porchier, Gunhild Rosqvist, Aldo Shemesh, Corinne Sonzogni, George E. A. Swann, Florence Sylvestre, and Hanno Meyer
Clim. Past, 20, 363–392, https://doi.org/10.5194/cp-20-363-2024, https://doi.org/10.5194/cp-20-363-2024, 2024
Short summary
Short summary
This paper presents the first comprehensive compilation of diatom oxygen isotope records in lake sediments (δ18OBSi), supported by lake basin parameters. We infer the spatial and temporal coverage of δ18OBSi records and discuss common hemispheric trends on centennial and millennial timescales. Key results are common patterns for hydrologically open lakes in Northern Hemisphere extratropical regions during the Holocene corresponding to known climatic epochs, i.e. the Holocene Thermal Maximum.
Anson W. Mackay, Vivian A. Felde, David W. Morley, Natalia Piotrowska, Patrick Rioual, Alistair W. R. Seddon, and George E. A. Swann
Clim. Past, 18, 363–380, https://doi.org/10.5194/cp-18-363-2022, https://doi.org/10.5194/cp-18-363-2022, 2022
Short summary
Short summary
We investigated the diversity of algae called diatoms in Lake Baikal, the oldest and deepest lake in the world, because algae sit at the base of aquatic foodwebs and provide energy (in the form of primary production) for other organisms to use. Diatom diversity and primary production have been influenced by both long-term and abrupt climate change over the past 16 000 years. The shape of these responses appears to be time-period specific.
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Short summary
Lake sediment cores are records of ancient climate change. Radiocarbon dates provide the records a timeframe. We present a database of radiocarbon data from Lake Baikal sediment cores to aid re-use of this data, and evaluate a key correction required to use radiocarbon data. Previous studies used corrections of 380–2100 years with an uncertainty of 90 years at most. Our results (1610 ± 760 years) highlight that age offset uncertainty has been underestimated and better estimators are needed.
Lake sediment cores are records of ancient climate change. Radiocarbon dates provide the records...
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