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~550-year climate periodicity in the Yunnan-Guizhou plateau during the late mid-Holocene: Insights and implications

Li, Youwei1; Fleitmann, Dominik2; Wang, Xiangli3; Pérez-Mejías, Carlos1; Sha, Lijuan1; Dong, Xiyu1; Wang, Deyuan4; Zhang, Rui1; Qu, Xiaoli1; Cheng, Hai1

Published May 18, 2023; Updated Dec 22, 2023 on Dryad. https://doi.org/10.5061/dryad.4tmpg4fg8

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May 18, 2023 version files 521.56 KB
Dec 22, 2023 version files 521.36 KB

Abstract

This is the Supporting Information for Li et al. "550-Year Climate Periodicity in the Yunnan-Guizhou Plateau during the late Mid-Holocene: Insights and Implications" published in Geophysical Research Letters. The data comes from a stalagmite in southwestern China (27° 4' N, 105° 5' E). The dataset includes the speleothem 230Th dating data (Table S1 in Supporting Information S1), the speleothem 230Th dating, 13C, lamina thickness, 18O, Sr/Ca and Mg/Ca data (Table S2), the updated 14C database from archaeological sites in southwestern China (Table S3), the calculated minimal occupation events as the unit of analysis by combining more than one 14C date (Table S4) and the summed 14C probability (SCP) records (Table S5). The Supporting Information S1 includes a pdf file (available through Zenodo) provided also contains details on the methods of all the lab work, the results of the trace elements, the demonstration of annual lamina and application of least-squares fit, the practices of calculating summed 14C probability (SCP) distributions in southwestern China and a discussion on how ENSO and local precipitation can influence the proxies. Additionally, there are supporting figures (Figure S1-S8) for the main text in Supporting Information S1. The speleothem 230Th dating, 13C, lamina thickness, 18O, Sr/Ca and Mg/Ca data in this study are also available in the public paleoclimate database of the National Oceanic and Atmospheric Administration (NOAA) (https://www.ncei.noaa.gov/access/paleo-search/study/38059).