Global warming-induced Asian hydrological climate transition across the Miocene–Pliocene boundary
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Published:2021-11-26
Issue:1
Volume:12
Page:
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ISSN:2041-1723
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Container-title:Nature Communications
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language:en
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Short-container-title:Nat Commun
Author:
Ao HongORCID, Rohling Eelco J.ORCID, Zhang RanORCID, Roberts Andrew P.ORCID, Holbourn Ann E.ORCID, Ladant Jean-BaptisteORCID, Dupont-Nivet Guillaume, Kuhnt Wolfgang, Zhang PengORCID, Wu Feng, Dekkers Mark J.ORCID, Liu Qingsong, Liu ZhonghuiORCID, Xu Yong, Poulsen Christopher J.ORCID, Licht AlexisORCID, Sun QiangORCID, Chiang John C. H., Liu XiaodongORCID, Wu Guoxiong, Ma Chao, Zhou WeijianORCID, Jin ZhangdongORCID, Li Xinxia, Li Xinzhou, Peng Xianzhe, Qiang XiaokeORCID, An ZhishengORCID
Abstract
AbstractAcross 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.
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry
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