Abstract A 154 year-long, tree-ring based stable oxygen isotope time series (δ18OTRC) of the evergreen southern beech (Nothofagus betuloides) was established for the southernmost part of Patagonia. The trees grew on the terminal moraine system of the Schiaparelli Glacier (54.4°S) within the windward and hyper-humid zone of the Austral Andes. The annually resolved δ18OTRC record spans the common period 1861–2015 and is based on the analysis of five individually analyzed tree individuals showing a significant mean interseries correlation (r = 0.69). To date, this time series represents the worldwide southernmost chronology of tree-ring δ18OTRC. Variations of the δ18OTRC values are significantly correlated with hydroclimatic conditions, as derived from ERA-Interim reanalysis gridded data. Negative relationships between the δ18OTRC-series and relative humidity (rOct-Feb = −0.62, p

中文翻译：

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来自最南端 Fuego-Patagonia 的树轮 δ18O 系列正在记录南极涛动的味道

摘要 在巴塔哥尼亚最南端建立了一个长达 154 年的、基于树木年轮的稳定氧同位素时间序列 (δ18OTRC) 的常绿南方山毛榉 (Nothofagus betuloides)。这些树木生长在南安第斯山脉的迎风和高湿区 Schiaparelli 冰川 (54.4°S) 的终端冰碛系统上。每年解析的 δ18OTRC 记录跨越 1861-2015 年的共同时期，基于对五个单独分析的树个体的分析，显示出显着的平均序列间相关性 (r = 0.69)。迄今为止，这个时间序列代表了全球最南端的年轮 δ18OTRC 年表。来自 ERA-Interim 再分析网格数据的 δ18OTRC 值的变化与水文气候条件显着相关。