globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2015.03.009
Scopus ID: 2-s2.0-84926471873
Astronomical and glacial forcing of East Asian summer monsoon variability
Author: Sun Y.; Kutzbach J.; An Z.; Clemens S.; Liu Z.; Liu W.; Liu X.; Shi Z.; Zheng W.; Liang L.; Yan Y.; Li Y.
Source Publication: Quaternary Science Reviews
ISSN: 2773791
Publishing Year: 2015
Volume: 115
pages begin: 132
pages end: 142
Language: 英语
Keyword: Chinese loess ; CO2 ; East Asian summer monsoon ; Ice-sheets ; Insolation ; Variability and dynamics
Scopus Keyword: Boundary conditions ; Carbon dioxide ; Glacial geology ; Glaciers ; Ice ; Incident solar radiation ; Sediments ; Solar radiation ; Chinese loess ; East Asian summer monsoon ; Ice sheet ; Integrated effects ; Internal boundary conditions ; Internal factors ; Summer precipitation ; Western Chinese Loess Plateau ; Atmospheric thermodynamics ; astronomy ; boundary condition ; carbon dioxide ; climate variation ; glacial-interglacial cycle ; ice sheet ; insolation ; model test ; monsoon ; precipitation assessment ; speleothem ; summer ; China ; Loess Plateau ; South China Block
English Abstract: The dynamics of glacial-interglacial monsoon variability can be attributed to orbitally induced changes in summer insolation and internal boundary conditions. However, the relative impacts of astronomical and internal factors on East Asian summer monsoon variability remain controversial. Here we combine proxy data and model results to evaluate the response of East Asian summer monsoon change to these forcings. δ13C of loess carbonate, a sensitive summer monsoon proxy from the western Chinese Loess Plateau, demonstrates coexistence of distinct 100-, 41- and 23-ka periods, in contrast to precession-dominated speleothem δ18O records in South China. Model results indicate that insolation, ice and CO2 have distinct impacts on summer precipitation changes in East Asia, whereas their relative impacts are spatially different, with a relatively stronger insolation effect in south China and a more dominant ice/CO2 influence in north China. Combined proxy data and model results indicate that East Asian summer monsoon variability was induced by integrated effects of summer insolation and changing boundary conditions (e.g., ice sheets and CO2 concentration). Our proxy-model comparison further suggests that gradual weakening of the summer monsoon related to slowly decreasing summer insolation at astronomical timescales will be likely overwhelmed by the projected ongoing anthropogenic CO2 emissions. © 2015 Elsevier Ltd.
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被引频次[WOS]:53   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:过去全球变化的重建

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Affiliation: State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; Joint Center for Global Change Studies, Beijing, China; Center for Climatic Research, University of Wisconsin-Madison, Madison, WI, United States; Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI, United States; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China

Recommended Citation:
Sun Y.,Kutzbach J.,An Z.,et al. Astronomical and glacial forcing of East Asian summer monsoon variability[J]. Quaternary Science Reviews,2015-01-01,115
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