气候变化领域集成服务门户(CCPortal): Quantitative precipitation reconstructions from Chagan Nur revealed lag response of East Asian summer monsoon precipitation to summer insolation during the Holocene in arid northern China

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DOI	10.1016/j.quascirev.2020.106365
	Quantitative precipitation reconstructions from Chagan Nur revealed lag response of East Asian summer monsoon precipitation to summer insolation during the Holocene in arid northern China
	Li, Guoqiang; Wang, Zhong; Zhao, Wenwei; Jin, Ming; Wang, Xiaoyan; Tao, Shuxian; Chen, Chunzhu; Cao, Xianyong; Zhang, Yunian; Yang, He; Madsen, David
通讯作者	Li, GQ ; Jin, M (通讯作者)
发表日期	2020
ISSN	0277-3791
卷号	239
英文摘要	East Asian summer monsoon (EASM) variability is primarily responsible for climate change in East Asia, influencing over a billion lives. The pattern and mechanisms of EASM change during the Holocene are intensely debated. In this study, we produce a high-quality age-depth model for a 11.7 m lacustrine record (CG18B core) from central Chagan Nur (a closed-basin lake located on the southern Mongolia plateau at the fringe of the modern EASM region) using 27 radiocarbon dates on organic materials and 10 quartz optically stimulated luminescence (OSL) ages on the lake sediments. Multiple-proxy analyses of pollen, grain size, total organic content, and CaCO3 content are used to reconstruct Holocene monsoonal precipitation change in the region. Reconstructed Chagan Nur level changes during the Holocene are based on 18 quartz OSL ages from well-preserved paleolake shorelines at different elevations on the northwestern basin margin. A combination of the lacustrine pollen records and a paleohydrology lake level change model is used to define quantitative precipitation change at the fringe of the EASM dominated region during the Holocene. Our results show that a lake highstand of 15-12 m higher than present occurred at 11-5 ka, followed by a decrease in lake levels to 8-7 m higher than present at 4-3 ka, and a general lake lowering during the late Holocene. EASM dominated annual precipitation varied between 420 mm and 280 mm during the Holocene period in the basin, indicating a generally semi-arid environment on the southern Mongolian Plateau, and corresponding to prevailing open steppe vegetation in the basin throughout the Holocene. EASM precipitation intensity increased from the early Holocene to the beginning of the mid-Holocene, with a maximum precipitation 30-50% higher than present at 8-6 ka, followed by a decrease in precipitation during the late Holocene. EASM precipitation shown in these records lags northern Hemisphere solar insolation shifts by similar to 3 ka, indicating that variation in EASM intensity did not respond directly to northern Hemisphere summer insolation, but rather was likely modulated by high latitude forcing of ice volume and greenhouse gases. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	INNER-MONGOLIA DAIHAI LAKE CORE SEDIMENTS SPATIAL EXTENT CLIMATE LUMINESCENCE QUARTZ IGNITION RECORDS CAVE
英文关键词	Asian summer monsoon; Quantitative precipitation reconstruction; Lake records; Luminescence dating; Holocene; Northern China
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000541126600013
来源期刊	QUATERNARY SCIENCE REVIEWS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259893
推荐引用方式 GB/T 7714	Li, Guoqiang,Wang, Zhong,Zhao, Wenwei,et al. Quantitative precipitation reconstructions from Chagan Nur revealed lag response of East Asian summer monsoon precipitation to summer insolation during the Holocene in arid northern China[J]. 中国科学院青藏高原研究所,2020,239.
APA	Li, Guoqiang.,Wang, Zhong.,Zhao, Wenwei.,Jin, Ming.,Wang, Xiaoyan.,...&Madsen, David.(2020).Quantitative precipitation reconstructions from Chagan Nur revealed lag response of East Asian summer monsoon precipitation to summer insolation during the Holocene in arid northern China.QUATERNARY SCIENCE REVIEWS,239.
MLA	Li, Guoqiang,et al."Quantitative precipitation reconstructions from Chagan Nur revealed lag response of East Asian summer monsoon precipitation to summer insolation during the Holocene in arid northern China".QUATERNARY SCIENCE REVIEWS 239(2020).