Global warming-induced Asian hydrological climate transition across the Miocene–Pliocene boundary

Hong Ao (), Eelco J. Rohling, Ran Zhang (), Andrew P. Roberts, Ann E. Holbourn, Jean-Baptiste Ladant, Guillaume Dupont-Nivet, Wolfgang Kuhnt, Peng Zhang, Feng Wu, Mark J. Dekkers, Qingsong Liu, Zhonghui Liu, Yong Xu, Christopher J. Poulsen, Alexis Licht, Qiang Sun, John C. H. Chiang, Xiaodong Liu, Guoxiong Wu, Chao Ma, Weijian Zhou, Zhangdong Jin, Xinxia Li, Xinzhou Li, Xianzhe Peng, Xiaoke Qiang and Zhisheng An
Additional contact information
Hong Ao: Chinese Academy of Sciences
Eelco J. Rohling: Australian National University
Ran Zhang: Chinese Academy of Sciences
Andrew P. Roberts: Australian National University
Ann E. Holbourn: Christian-Albrechts-University
Jean-Baptiste Ladant: University of Michigan
Guillaume Dupont-Nivet: University Rennes
Wolfgang Kuhnt: Christian-Albrechts-University
Peng Zhang: Chinese Academy of Sciences
Feng Wu: Chinese Academy of Sciences
Mark J. Dekkers: Utrecht University
Qingsong Liu: Southern University of Science and Technology
Zhonghui Liu: University of Hong Kong
Yong Xu: China Geological Survey
Christopher J. Poulsen: University of Michigan
Alexis Licht: University of Washington
Qiang Sun: Xi’an University of Science and Technology
John C. H. Chiang: University of California
Xiaodong Liu: Chinese Academy of Sciences
Guoxiong Wu: Chinese Academy of Sciences
Chao Ma: Chengdu Universityof Technology
Weijian Zhou: Chinese Academy of Sciences
Zhangdong Jin: Chinese Academy of Sciences
Xinxia Li: China University of Geosciences (Wuhan)
Xinzhou Li: Chinese Academy of Sciences
Xianzhe Peng: Nanjing University
Xiaoke Qiang: Chinese Academy of Sciences
Zhisheng An: Chinese Academy of Sciences

Nature Communications, 2021, vol. 12, issue 1, 1-13

Abstract: Abstract Across the Miocene–Pliocene boundary (MPB; 5.3 million years ago, Ma), late Miocene cooling gave way to the early-to-middle Pliocene Warm Period. This transition, across which atmospheric CO2 concentrations increased to levels similar to present, holds potential for deciphering regional climate responses in Asia—currently home to more than half of the world’s population— to global climate change. Here we find that CO2-induced MPB warming both increased summer monsoon moisture transport over East Asia, and enhanced aridification over large parts of Central Asia by increasing evaporation, based on integration of our ~1–2-thousand-year (kyr) resolution summer monsoon records from the Chinese Loess Plateau aeolian red clay with existing terrestrial records, land-sea correlations, and climate model simulations. Our results offer palaeoclimate-based support for ‘wet-gets-wetter and dry-gets-drier’ projections of future regional hydroclimate responses to sustained anthropogenic forcing. Moreover, our high-resolution monsoon records reveal a dynamic response to eccentricity modulation of solar insolation, with predominant 405-kyr and ~100-kyr periodicities between 8.1 and 3.4 Ma.

Date: 2021
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DOI: 10.1038/s41467-021-27054-5

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