Precipitation lagged behind temperature increase during the Bølling-Allerød interstadial in Northeast China

作者：Zeyang Zhu, Jing Wu, Patrick Rioual, Jiaxin Lu, Luo Wang, Guoqiang Chu, Jiaqi Liu · 发表于：Global and Planetary Change · 年份：2025 · DOI：10.1016/j.gloplacha.2025.105032 · 被引用次数：3 · 研究领域：Geology and Paleoclimatology Research、Cryospheric studies and observations、Climate change and permafrost

The Bølling-Allerød (B-A) interstadial (~14.7–12.85 cal ka BP), the most important warming event of the last deglaciation in the northern hemisphere, is a key time window to study how precipitation changes under the background of rapid warming. However, the relationship between precipitation changes and rapid warming during the B-A interstadial in Northeast (NE) China has remained unclear. Here, we present a multiproxy record spanning the interval 20–10 cal ka BP from a small volcanic lake in NE China and compare it with other records from the same region to clarify the hydroclimatological history of the last deglaciation in NE China. The results suggest that precipitation lagged behind temperature increase during the B-A interstadial in NE China. We attribute this lag to the different forcings at play on the evolution of precipitation and temperature during the B-A, in which the temperature changes were forced by the recovery of the Atlantic Meridional Overturning Circulation and the triggered release of stored heat in the North Atlantic from the high latitudes while the precipitation changes were controlled by increasing sea surface temperatures in the low latitudes.