Lake Baikal isotope records of Holocene Central Asian precipitation

Swann, George E.A. and Mackay, Anson W. and Vologina, Elena and Jones, Matthew D. and Panizzo, Virginia and Leng, Melanie J. and Sloane, Hilary J. and Snelling, Andrea M. and Sturm, Michael (2018) Lake Baikal isotope records of Holocene Central Asian precipitation. Quaternary Science Reviews, 189 . pp. 210-222. ISSN 1873-457X

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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.

Item Type: Article
Keywords: Diatom; Mongolia; Paleoclimatology; Paleolimnology; Russia
Schools/Departments: University of Nottingham, UK > Faculty of Social Sciences > School of Geography
University of Nottingham, UK > Faculty of Science > School of Biosciences
Identification Number: https://doi.org/10.1016/j.quascirev.2018.04.013
Depositing User: Eprints, Support
Date Deposited: 18 Apr 2018 12:30
Last Modified: 27 Apr 2019 04:30
URI: http://eprints.nottingham.ac.uk/id/eprint/51246

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