Author-submitted data information
| ID | 739 |
| Title | Warming-induced Atmospheric Drying in Eastern China Since 1955: Evidence from Tree-Ring Stable Carbon and Oxygen Isotopes |
| Creator | Yao Li |
| Subject | Tree-ring carbon and oxygen isotopes data |
| Publisher | Xiukuan Zhao |
| Description | The δ13C and δ18O ratios were measured simultaneously using a triple-isotope approach developed by Loader et al. (2015), using the isotope ratio mass spectrometer (Delta V Advantage, Thermo Scientific, Germany) interfaced with a pyrolysis-type high-temperature-conversion elemental analyzer (Flash HT, Thermo Scientific, Germany), at the Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China. The pyrolysis temperature is set to 1350 °C. Studies have shown that tree-ring δ¹³C data derived from this high-temperature pyrolysis method exhibit strong consistency in temporal variation with δ¹³C obtained via traditional combustion methods (Xu et al., 2018). Isotope data are expressed as ‰ deviations from the VPDB and VSMOW standards. The isotope values of cellulose were determined by comparison against an in-house working standard (Merck cellulose) that was analyzed following each batch of eight samples, average analytical precision of the Merck cellulose was ± 0.05‰ for δ13C (with respect to the V-PDB standard) and ± 0.20‰ for δδ18O (with respect to the V-SMOW standard). To eliminate the effect of the combustion of 13C-deficient fossil fuels, raw δ13C series were corrected by applying the method from McCarroll and Loader (2004), and the δ13C value of atmospheric CO2 was obtained from Belmecheri and Lavergne (2020). Belmecheri, S., & Lavergne, A. (2020). Compiled records of atmospheric CO2 concentrations and stable carbon isotopes to reconstruct climate and derive plant ecophysiological indices from tree rings. Dendrochronologia, 63, 125748. https://doi.org/10.1016/j.dendro.2020.125748 Loader, N. J., Street-Perrott F. A., Daley, T. J., Hughes P. D. M., Kimak, A., Levanič T., et al. (2015). Simultaneous determination of stable carbon, oxygen, and hydrogen isotopes in cellulose. Analytical chemistry,87(1), 376–380. https://doi.org/10.1021/ac502557x McCarroll, D., & Loader, N. J. (2004). Stable isotopes in tree rings. Quaternary Science Reviews, 23, 771–801. https://doi.org/10.1016/j.quascirev.2003.06.017 Xu, C., Sano, M., Dimri, A. P., Ramesh, R., Nakatsuka, T., Shi, F., et al. (2018). Decreasing Indian summer monsoon on the northern Indian sub-continent during the last 180 years: Evidence from five tree-ring cellulose oxygen isotope chronologies. Climate of the Past, 14(5), 653–664. https://doi.org/10.5194/cp-14-653-2018 |
| Contributor | Chenxi Xu, Hailong Ge, Yucheng Liu, Xinyu He |
| Date | 1864-2022 |
| Type | The first column represents the year, and the remaining columns represent the stable isotope values of the corresponding row name tree core |
| Format | .xlsx, available in Microsoft Excel |
| URL | http://www.geophys.ac.cn/ArticleData/20251020FYSisotope.zip |
| DOI | 10.12197/2025GA040 |
| Source | |
| Language | Eng |
| Relation | |
| Coverage | |
| Rights | Institute of Geology and Geophysics, Chinese Academy of Sciences |