气候变化领域集成服务门户(CCPortal): Centennial-scale climatic changes in Central China during the Holocene climatic optimum

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DOI	10.1016/j.palaeo.2020.109950
	Centennial-scale climatic changes in Central China during the Holocene climatic optimum
	Zhang J.; Kong X.; Zhao K.; Wang Y.; Liu S.; Wang Z.; Liu J.; Cheng H.; Edwards R.L.
发表日期	2020
ISSN	0031-0182
卷号	558
英文摘要	Our knowledge about climatic changes at centennial-scale and their causes during the Holocene climatic optimum (HCO) remains poorly constrained. Here, we present δ18O and δ13C records from a precisely dated stalagmite (13.2 to 1.9 kyr BP) from Xiniu Cave, central China. The δ18O record shows a gradual weakening in the strength of the East Asian summer monsoon (EASM) from early to middle Holocene, corresponding with a decrease in Northern Hemisphere summer insolation (NHSI). A similar pattern is absent in our δ13C record, and is replaced by persistent centennial-scale oscillations throughout the Holocene. Variations of δ13C reflect changes in vegetation density, soil CO2 production, CO2 degassing, prior calcite precipitation (PCP), and cave ventilation, associated with temperature and rainfall variations at local scale. Based on the δ13C record, three dry/cold events at approximately 6.0, 8.2, and 10.5 kyr BP, can be identified during the HCO (11.1 ± 0.1 to 5.4 ± 0.1 kyr BP), coinciding with the well-known Holocene Bond events. The power spectrum analysis shows that the significant periodicity (843 yr) of the δ13C record within the HCO may be related to the North Atlantic-cycle. Therefore, we speculate that the centennial-scale climatic changes during the HCO probably resulted from cooling in the North Atlantic, and that the intensified and southward Westerly jet played a role in transmitting this signal from high latitudes to central China. © 2020 Elsevier B.V.
英文关键词	EASM; Hydrothermal; North Atlantic; Stable isotopes; Stalagmite; Xiniu Cave
语种	英语
scopus关键词	climate change; cooling; Holocene; latitude; Northern Hemisphere; spectral analysis; stalagmite; westerly; Atlantic Ocean; Atlantic Ocean (North); China
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150354
作者单位	School of Geography Science, Nanjing Normal University, Nanjing, 210023, China; College of Geography and Environment, Jiangxi Normal University, Nanchang, 330022, China; Educational Key Laboratory of Poyang Lake Wetland and Watershed Research (Jiangxi Normal University), Nanchang, 330022, China; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, 710049, China; Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN 55455, United States
推荐引用方式 GB/T 7714	Zhang J.,Kong X.,Zhao K.,et al. Centennial-scale climatic changes in Central China during the Holocene climatic optimum[J],2020,558.
APA	Zhang J..,Kong X..,Zhao K..,Wang Y..,Liu S..,...&Edwards R.L..(2020).Centennial-scale climatic changes in Central China during the Holocene climatic optimum.Palaeogeography, Palaeoclimatology, Palaeoecology,558.
MLA	Zhang J.,et al."Centennial-scale climatic changes in Central China during the Holocene climatic optimum".Palaeogeography, Palaeoclimatology, Palaeoecology 558(2020).