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Lake Baikal isotope records of Holocene Central Asian precipitation

Swann, George E.A.; Mackay, Anson W.; Vologina, Elena; Jones, Matthew D.; Panizzo, Virginia; Leng, Melanie J.; Sloane, Hilary J.; Snelling, Andrea M.; Sturm, Michael

Authors

Anson W. Mackay

Elena Vologina

MATTHEW JONES MATTHEW.JONES@NOTTINGHAM.AC.UK
Professor of Quaternary Science

Hilary J. Sloane

Andrea M. Snelling

Michael Sturm



Abstract

Climate models currently provide conflicting predictions of future climate change across Central Asia. With concern over the potential for a change in water availability to impact communities and ecosystems across the region, an understanding of historical trends in precipitation is required to aid model development and assess the vulnerability of the region to future changes in the hydroclimate. Here we present a record from Lake Baikal, located in the southern Siberian region of central Asia close to the Mongolian border, which demonstrates a relationship between the oxygen isotope composition of diatom silica (δ18Odiatom) and precipitation to the region over the 20th and 21st Century. From this, we suggest that annual rates of precipitation in recent times are at their lowest for the past 10,000 years and identify significant long-term variations in precipitation throughout the early to late Holocene interval. Based on comparisons to other regional records, these trends are suggested to reflect conditions across the wider Central Asian region around Lake Baikal and highlight the potential for further changes in precipitation with future climate change.

Journal Article Type Article
Publication Date Jun 1, 2018
Journal Quaternary Science Reviews
Print ISSN 0277-3791
Electronic ISSN 1873-457X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 189
APA6 Citation Swann, G. E., Mackay, A. W., Vologina, E., Jones, M. D., Panizzo, V., Leng, M. J., …Sturm, M. (2018). Lake Baikal isotope records of Holocene Central Asian precipitation. Quaternary Science Reviews, 189, https://doi.org/10.1016/j.quascirev.2018.04.013
DOI https://doi.org/10.1016/j.quascirev.2018.04.013
Keywords Diatom; Mongolia; Paleoclimatology; Paleolimnology; Russia
Publisher URL https://www.sciencedirect.com/science/article/pii/S0277379117306480
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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