Variations in monsoon precipitation over southwest China during the last 1500 years and possible driving forces

doi:10.1007/s11430-021-9888-y

	Variations in monsoon precipitation over southwest China during the last 1500 years and possible driving forces
	Liu, Bin 3,4; Sheng, Enguo 3,4; Yu, Keke 2; Zhou, Kang'en 1; Lan, Jianghu 3
刊名	SCIENCE CHINA-EARTH SCIENCES
	2022-05-01
卷号	65 期号:5 页码:949-965
关键词	Lake sediments Southwest China Monsoon precipitation Distinct climate periods Inter-tropical Convergence Zone
ISSN号	1674-7313
DOI	10.1007/s11430-021-9888-y
通讯作者	Sheng, Enguo(shengeg1985@126.com)
英文摘要	Understanding hydroclimatic patterns and their possible driving mechanisms during distinct climate periods over the last 1500 years-such as the Medieval Warm Period (MWP), the Little Ice Age (LIA), and the Current Warm Period-is crucial for predicting future changes to monsoon precipitation in southwest China under global warming scenarios. In this study, based on Pb-210 and Cs-137 dating of surface sediments and AMS C-14 dating of terrestrial plant residues, we establish a robust age model that covers the last similar to 1500 years (AD 439-2012) at Lake Yihai in southwest China. We use analyses of multiple geochemical proxy indices, including loss on ignition at 550 degrees C, total organic carbon, total nitrogen, C/N ratios, and stable carbon isotopes of organic matter to reconstruct changes in summer monsoon precipitation at Lake Yihai during the last similar to 1500 years. The results show that, over southwest China, warm and dry climate conditions prevailed during the MWP (AD 1000-1400) and the past 200 years, whereas conditions during the LIA (AD 1400-1800) were cold and wet. This is consistent with evidence from other geological records over southwest China, such as stalagmite and lake sediment data. Similar hydroclimatic patterns have occurred over the last 1500 years in adjacent tropical/subtropical monsoon regions where the climate is similarly dominated by the Indian summer monsoon (e.g., South China, the South China Sea, Southeast Asia, Northeast India). We suggest that the meridional migration of the mean position of the Inter-tropical Convergence Zone, and El Nino/Southern Oscillation conditions which are linked to tropical Pacific sea surface temperature, are responsible for centennial-scale hydroclimatic patterns over southwest China and adjacent areas during the last 1500 years.
资助项目	National Natural Science Foundation of China[41807429] ; National Natural Science Foundation of China[41702190] ; Open Fund Project of State Key Laboratory of Loess and Quaternary Geology, IEECAS[SKLLQG1517]
WOS关键词	ASIAN SUMMER MONSOON ; INTERTROPICAL CONVERGENCE ZONE ; WESTERN NORTH PACIFIC ; HIGH-RESOLUTION ; ORGANIC-MATTER ; LATE-HOLOCENE ; MOISTURE TRANSPORT ; GLOBAL MONSOON ; DONGGE CAVE ; ICE-AGE
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000780765400001
资助机构	National Natural Science Foundation of China ; Open Fund Project of State Key Laboratory of Loess and Quaternary Geology, IEECAS
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17658]
专题	地球环境研究所_现代环境研究室
通讯作者	Sheng, Enguo
作者单位	1.Tianjin Univ, Sch Earth Syst Sci, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China 2.Baoji Univ Arts & Sci, Shaanxi Key Lab Disasters Monitoring & Mech Simul, Baoji 721013, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 4.Zunyi Normal Univ, Coll Resources & Environm, Zunyi 563006, Guizhou, Peoples R China
推荐引用方式 GB/T 7714	Liu, Bin,Sheng, Enguo,Yu, Keke,et al. Variations in monsoon precipitation over southwest China during the last 1500 years and possible driving forces[J]. SCIENCE CHINA-EARTH SCIENCES,2022,65(5):949-965.
APA	Liu, Bin,Sheng, Enguo,Yu, Keke,Zhou, Kang'en,&Lan, Jianghu.(2022).Variations in monsoon precipitation over southwest China during the last 1500 years and possible driving forces.SCIENCE CHINA-EARTH SCIENCES,65(5),949-965.
MLA	Liu, Bin,et al."Variations in monsoon precipitation over southwest China during the last 1500 years and possible driving forces".SCIENCE CHINA-EARTH SCIENCES 65.5(2022):949-965.