Abstract El Nino-Southern Oscillation (ENSO) is the largest source of interannual climate variability over the globe. Knowledge of ENSO variability back to the pre-instrumental period (and earlier) can help to enhance our understanding of its mechanisms and impacts. Here we use the coral record from the northern South China Sea, where the interannual climate variability is associated with ENSO activity, to reconstruct ENSO variability over the past 150 years. Our record, together with other ENSO chronologies, indicated not only the weakened ENSO activity between ~1930s and ~1960s but also the larger variations of El Nino activity relative to that of La Nina based on the sliding window method. The comparison between the SCS and Pacific ENSO band coral records revealed the relatively stronger climatic coupling between the SCS and the equatorial central-eastern Pacific compared with that between SCS and western Pacific, indicating the reliability of teleconnection relationship between the SCS climate and ENSO. Our result indicated that the coral δ18O record from the SCS could contribute to the pan-Pacific ENSO reconstructions.

中文翻译：

---

公元1851年以来南海北部厄尔尼诺-南方涛动的珊瑚δ18O重建

摘要 厄尔尼诺-南方涛动 (ENSO) 是全球年际气候变率的最大来源。将 ENSO 可变性追溯到仪器前时期（和更早）有助于增强我们对其机制和影响的理解。在这里，我们使用南海北部的珊瑚记录，其中年际气候变化与 ENSO 活动有关，以重建过去 150 年的 ENSO 变化。我们的记录与其他 ENSO 年表一起，不仅表明 ~1930 年代和 ~1960 年代之间 ENSO 活动减弱，而且基于滑动窗口方法，厄尔尼诺活动相对于拉尼娜的变化更大。南海与太平洋ENSO带珊瑚记录的对比表明，与南海与西太平洋相比，南海与赤道中-东太平洋之间的气候耦合相对较强，表明南海气候与ENSO之间遥相关关系的可靠性。我们的结果表明，来自 SCS 的珊瑚 δ18O 记录可能有助于泛太平洋 ENSO 重建。