Concurrent Asian monsoon strengthening and early modern human dispersal to East Asia during the last interglacial

• 成果类型: Article
• 署名作者: Ao, Hong; Ruan, Jiaoyang; Martinon-Torres, Maria; Krapp, Mario; Liebrand, Diederik; Dekkers, Mark J.; Caley, Thibaut; Jonell, Tara N.; Zhu, Zongmin; Huang, Chunju; Li, Xinxia; Zhang, Ziyun; Sun, Qiang; Yang, Pingguo; Jiang, Jiali; Li, Xinzhou; Xie, Xiaoxun; Song, Yougui; Qiang, Xiaoke; Zhang, Peng; An, Zhisheng
• 署名单位: Chinese Academy of Sciences; Institute of Earth Environment, CAS; Laoshan Laboratory; Institute for Basic Science - Korea (IBS); Pusan National University; Centro Nacional de Investigacion de La Evolucion Humana (CENIEH); University of London; University College London; University of Cambridge; University of Manchester; Utrecht University; Universite de Bordeaux; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); University of Glasgow; China University of Geosciences; Xi'an University of Science & Technology; Shanxi Normal University; Xi'an Jiaotong University; Beijing Normal University
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-12638
• DOI: 10.1073/pnas.2308994121
• 发表日期: 2024-01-16
• 关键词: middle pleistocene hominin; homo-sapiens; summer monsoon; u-series; teeth; AFRICA; record; paleoanthropology; guangxi; climate

摘要

The relationship between initial Homo sapiens dispersal from Africa to East Asia and the orbitally paced evolution of the Asian summer monsoon (ASM)-currently the largest monsoon system-remains underexplored due to lack of coordinated synthesis of both Asian paleoanthropological and paleoclimatic data. Here, we investigate orbital-scale ASM dynamics during the last 280 thousand years (kyr) and their likely influences on early H. sapiens dispersal to East Asia, through a unique integration of i) new centennial-resolution ASM records from the Chinese Loess Plateau, ii) model-based East Asian hydroclimatic reconstructions, iii) paleoanthropological data compilations, and iv) global H. sapiens habitat suitability simulations. Our combined proxy- and model-based reconstructions suggest that ASM precipitation responded to a combination of Northern Hemisphere ice volume, greenhouse gas, and regional summer insolation forcing, with cooccurring primary orbital cycles of similar to 100-kyr, 41-kyr, and similar to 20-kyr. Between similar to 125 and 70 kyr ago, summer monsoon rains and temperatures increased in vast areas across Asia. This episode coincides with the earliest H. sapiens fossil occurrence at multiple localities in East Asia. Following the transcontinental increase in simulated habitat suitability, we suggest that ASM strengthening together with Southeast African climate deterioration may have promoted the initial H. sapiens dispersal from their African homeland to remote East Asia during the last interglacial.