Asian Winter Monsoon Imprint on Holocene SST Changes at the Northern Coast of the South China Sea

doi:10.1029/2019GL085617

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	Asian Winter Monsoon Imprint on Holocene SST Changes at the Northern Coast of the South China Sea
	Zhang, Yancheng 1; Zhu, Kai 1; Huang, Chao 2; Kong, Deming 3; He, Yuxin 4; Wang, Huanye 5; Liu, Weiguo 5; Xie, Zhouqing 6; Wei, Gangjian 2; Liu, Zhonghui 1
通讯作者	Liu, Zhonghui(zhliu@hku.hk)
	2019-11-22
发表期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
页码	8
摘要	Independent inference of the Asian winter monsoon (AWM), albeit achieved at several sparse sites, has reached no consensus for its variability through the Holocene. A sediment core from the northern coast of the South China Sea (SCS) was utilized to analyze organic biomarkers at (bi-)decadal resolution, unveiling how SCS oceanic conditions fingerprint the AWM signal. Generally, alkenone sea surface temperature (SST) record, resembling the temporal structures of integrated tropical SST over the past 7,500 years, shows abnormal cool temperatures (up to similar to 4 degrees C) during the Little Ice Age and between similar to 1,200 and 2,500 years BP, when windborne terrigenous hopane compounds experienced considerable increases superimposed on a general increasing trend. Our results, together with augmented SST gradient between the SCS coast and open ocean, consistently suggest AWM strengthening toward the late Holocene. An intensified AWM during cold intervals like the Little Ice Age would have provided strong positive feedback to enhance coastal cooling. Plain Language Summary Reconstructions of the Holocene Asian winter monsoon (AWM) history from terrestrial proxies are not only limited but also opposite, with both strengthening and weakening trends as reported. This study sheds additional insight into this controversy by analyzing the organic geochemistry of a sediment core at the northern coast of the South China Sea, where oceanic conditions such as sea surface temperature intensively interact with the AWM. We observed substantial surface cooling and a remarkable increase in terrestrial-sourced hopane content concurrently toward the late Holocene, with the maximum taking place during the Little Ice Age and between 1,200 and 2,500 years ago. Together with enhanced temperature contrast between the coast and open ocean, our results clearly demonstrate an overall intensification of the Holocene AWM toward the present, antiphased with Asian summer monsoon changes.
关键词	South China Sea northern coast alkenone SST biomarkers Holocene Asian winter monsoon
DOI	10.1029/2019GL085617
关键词[WOS]	SUMMER MONSOON ; ENVIRONMENTAL-CHANGES ; SURFACE TEMPERATURES ; CLIMATE ; RECORDS ; VARIABILITY ; EVOLUTION ; LINKS ; ALKENONE ; LOESS
收录类别	SCI ; SCI
语种	英语
资助项目	National Key Research and Development Program of China[2016YFA0601204] ; HK RGC grant[17325516]
WOS研究方向	Geology
项目资助者	National Key Research and Development Program of China ; HK RGC grant
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000497910800001
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/12955
专题	加速器质谱中心
通讯作者	Liu, Zhonghui
作者单位	1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Guangdong, Peoples R China 3.Guangdong Ocean Univ, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang, Peoples R China 4.Zhejiang Univ, Sch Earth Sci, Hangzhou, Zhejiang, Peoples R China 5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China 6.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yancheng,Zhu, Kai,Huang, Chao,et al. Asian Winter Monsoon Imprint on Holocene SST Changes at the Northern Coast of the South China Sea[J]. GEOPHYSICAL RESEARCH LETTERS,2019:8.
APA	Zhang, Yancheng.,Zhu, Kai.,Huang, Chao.,Kong, Deming.,He, Yuxin.,...&Liu, Zhonghui.(2019).Asian Winter Monsoon Imprint on Holocene SST Changes at the Northern Coast of the South China Sea.GEOPHYSICAL RESEARCH LETTERS,8.
MLA	Zhang, Yancheng,et al."Asian Winter Monsoon Imprint on Holocene SST Changes at the Northern Coast of the South China Sea".GEOPHYSICAL RESEARCH LETTERS (2019):8.