Ice core oxygen isotope record and its three components from the Qiangtang No. 2 glacier, central Tibetan Plateau

In November 2021, we drilled five ice cores from the saddle of the Qiangtang No. 2 glacier (33.31^oN, 88.71^oE, 5854 masl). The data include the oxygen isotope anomaly sereis derived from the top 7.3 m of core-4 (QT2C4). The Singular Spectrum Analysis (SSA) method is also applied to distangle major modes in the record. Time series of the derived three compoments are also included in the dataset. In addition, simulated annual precipitation δ18O time series at the nearest grid to the ice core site between 1979-2020, including three isotope-enable models nudged by three different reanalysis products is also provided. A full descirption of the model setup and the full set of the simulation data are from Bong, H., Cauquoin, A., Okazaki, A., Chang, E. C., Werner, M., Wei, Z., Yeo, N., &amp; Yoshimura, K. (2024). Process‐Based Intercomparison of Water Isotope‐Enabled Models and Reanalysis Nudging Effects. <i>J. Geophys. Res.</i>, <i>129</i>(1). doi:10.1029/2023jd038719.

2021年11月，我们在羌塘2号冰川鞍部（北纬33.31°，东经88.71°，海拔5854米）钻取了5支冰芯。数据集包含从4号冰芯（QT2C4）顶部7.3米提取的氧同位素异常序列。此外，通过奇异谱分析（Singular Spectrum Analysis，SSA）方法分离记录中主要模态后得到的三个分量的时间序列也被纳入数据集。数据集还提供了1979-2020年间冰芯站点最近网格点的模拟年降水δ18O时间序列，包括由三种不同再分析产品驱动的三个启用同位素的模型输出。模型设置的完整描述及全套模拟数据来源于Bong等（2024）的研究：《基于过程的水同位素启用模型与再分析驱动效应的比对研究》（《地球物理研究杂志》，第129卷第1期，doi:10.1029/2023jd038719）。