Reconciling East Asia's mid-Holocene temperature discrepancy through vegetation-climate feedback

• DOI: 10.1016/j.scib.2024.04.012
• Publication Date: 2024-04-07T07:46:06Z
• Authors: Jie Chen; Qiong Zhang; Zhengyao Lu; Yanwu Duan; Xianyong Cao; Jianping Huang; Fahu Chen
• Keywords: Proxy (statistics); Paleoclimatology; Holocene climatic optimum; Global temperature

The term "Holocene temperature conundrum" refers to the inconsistencies between proxy-based reconstructions and transient model simulations, it challenges our understanding of global evolution during Holocene. Climate indicate a cooling trend following Holocene Thermal Maximum, while simulations consistent warming due ice-sheet retreat rising greenhouse gas concentrations. Various factors, such as seasonal biases overlooked feedback processes, have been proposed potential causes for this discrepancy. In study, we examined impact vegetation-climate on anomaly patterns in East Asia mid-Holocene (∼6 ka). By utilizing fully coupled Earth system EC-Earth performing with without dynamic vegetation, objective was isolate influence vegetation changes regional patterns. Our findings reveal that contributed across most Asia, resulting spatially diverse significantly improved model-data agreement. These results highlight crucial role addressing conundrum emphasize its importance simulating accurate climate scenarios.