Articles | Volume 20, issue 6
https://doi.org/10.5194/cp-20-1401-2024
https://doi.org/10.5194/cp-20-1401-2024
Research article
 | 
27 Jun 2024
Research article |  | 27 Jun 2024

A series of climate oscillations around 8.2 ka revealed through multi-proxy speleothem records from North China

Pengzhen Duan, Hanying Li, Zhibang Ma, Jingyao Zhao, Xiyu Dong, Ashish Sinha, Peng Hu, Haiwei Zhang, Youfeng Ning, Guangyou Zhu, and Hai Cheng

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Cited articles

Aguiar, W., Meissner, K. J., Montenegro, A., Prado, L., Wainer, I., and Carlson, A. E.: Magnitude of the 8.2 ka event freshwater forcing based on stable isotope modelling and comparison to future Greenland melting, Sci. Rep., 11, 1–10, https://doi.org/10.1038/s41598-021-84709-5, 2021. 
Allan, M., Fagel, N., van der Lubbe, H. J. L., Vonhof, H. B., Cheng, H., Edwards, R. L., and Verheyden, S.: High-resolution reconstruction of 8.2-ka BP event documented in Père Noël cave, southern Belgium, J. Quaternary Sci., 33, 840–852, https://doi.org/10.1002/jqs.3064, 2018. 
Alley, R. B., Mayewski, P. A., Sowers, T., Stuiver, M., Taylor, K. C., and Clark, P. U.: Holocene climatic instability: a prominent, widespread event 8200 yr ago, Geology, 25, 483–486, https://doi.org/10.1130/0091-7613(1997)025<0483:HCIAPW>2.3.CO;2, 1997. 
Andersen, N., Lauterbach, S., Erlenkeuser, H., Danielopol, D. L., Namiotko, T., and Hüls, M.: Evidence for higher-than-average air temperatures after the 8.2 ka event provided by a Central European δ18O record, Quaternary Sci. Rev., 172, 96–108, https://doi.org/10.1016/j.quascirev.2017.08.001, 2017. 
Baker, A., Asrat, A., Fairchild, I. J., Leng, M. J., Wynn, P. M., Bryant, C., Genty, D., and Umer, M.: Analysis of the climate signal contained within δ18O and growth rate parameters in two Ethiopian stalagmites, Geochim. Cosmochim. Ac., 71, 2975–2988, https://doi.org/10.1016/j.gca.2007.03.029, 2007. 
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Short summary
We use multi-proxy speleothem records to reveal a two droughts–one pluvial pattern during 8.5–8.0 ka. The different rebounded rainfall quantity after two droughts causes different behavior of δ13C, suggesting the dominant role of rainfall threshold on the ecosystem. A comparison of different records suggests the prolonged 8.2 ka event is a globally common phenomenon rather than a regional signal. The variability of the AMOC strength is mainly responsible for these climate changes.