乌鸦洞石笋碳氧同位素数据集（全新世）

黄土高原西南边缘的5根高精度定年的，生长期涵盖近乎整个全新世的石笋，其高分辨率(~5年)的碳、氧同位素记录揭示了全新世时期研究地区季风强度（降雨）的变化，结果显示该地区的最湿润期发生在10500-6600a BP，之后百年尺度的季风强度变化幅度愈发强烈，与ENSO变化表现出较高的一致性。另一方面，同位素变化记录了全新世时期的多次突发性弱季风和干旱事件，其中8.2 ka、5.5 ka、和2.8 ka事件均具有不对称的双峰结构，可能受控于太阳活动的影响。而4.2 ka时期，该地区的季风降水逐渐减少，呈现百年至十年尺度的波动变化。这一记录对于更好的理解全新世突变事件的成因机制具有重要意义，能够为预测全球变暖趋势下未来气候变化提供重要依据。

Five high-precision-dated stalagmites from the southwestern margin of the Loess Plateau, whose growth spans nearly the entire Holocene epoch, have high-resolution (~5-year) carbon and oxygen isotope records that reveal variations in monsoon intensity (rainfall) in the study area during the Holocene. The results show that the wettest period in this region occurred between 10500 and 6600 a BP. Subsequently, the magnitude of centennial-scale monsoon intensity fluctuations intensified and exhibited high consistency with ENSO variations. On the other hand, the isotope records document multiple abrupt weak monsoon and drought events during the Holocene. Among these, the 8.2 ka, 5.5 ka, and 2.8 ka events all present asymmetric bimodal structures, which may be controlled by solar activity. During the 4.2 ka period, monsoon precipitation in this region gradually decreased, showing fluctuations on centennial to decadal scales. This record is of great significance for better understanding the causal mechanisms of Holocene abrupt events, and can provide important evidence for predicting future climate changes under the trend of global warming.