中国西南部云南省小白龙洞石笋氧同位素数据集（过去252 kyr间）

来自中国西南部的小白龙洞石笋δ18O记录揭示了印度东北部、喜马拉雅山麓、孟加拉和印度北部过去252 kyr的夏季风降水的变化。这一记录以岁差为主，其间穿插着与北大西洋海因里希（Heinrich）事件同步的显著的千年尺度振荡。它也清晰地显示了冰期-间冰期变化，与海洋和其他陆地代用指标相一致，但与中国东部的洞穴记录不同。利用同位素全球环流模型，我们假设这种差异反映了大气环流和水汽运移轨迹的不同变化，这些变化与气候变化有关，也与冰期的地形变化有关，特别是和不断扩大的冰盖上方的气团重新分布和西赤道太平洋海洋大陆的“陆桥”暴露有关。
数据实体包括：
1) 小白龙洞石笋的δ18O记录

The stalagmite δ¹⁸O record from Xiaobailong Cave in southwestern China reveals changes in summer monsoon precipitation over the past 252 kyr across northeastern India, the Himalayan foothills, Bangladesh, and northern India. This record is dominated by precession, interspersed with prominent millennial-scale oscillations synchronous with North Atlantic Heinrich events. It also clearly exhibits glacial-interglacial variations consistent with marine and other terrestrial proxy records, but diverges from cave records from eastern China. Using isotopic global circulation models, we hypothesize that this discrepancy reflects distinct changes in atmospheric circulation and water vapor transport trajectories, which are linked to both climate change and glacial topographic changes, particularly air mass redistribution over expanding ice sheets and the exposure of the "land bridge" in the Western Equatorial Pacific Oceanic Continent.
Dataset entities include: 1) The δ¹⁸O record of the Xiaobailong Cave stalagmite.