The Early-Middle Pleistocene transition of Asian summer monsoon

doi:10.1016/j.palaeo.2020.109636

IEECAS OpenIR > 古环境研究室

	The Early-Middle Pleistocene transition of Asian summer monsoon
	Peng, Xianzhe 1,2; Ao, Hong1,2,3,4 ; Xiao, Guoqiao 1; Qiang, Xiaoke2,3 ; Sun, Qiang 5
通讯作者	Ao, Hong(aohong@ieecas.cn)
	2020-05-01
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	545 页码:7
摘要	The global climate cyclicity transferred from an Early Pleistocene mode dominated by the obliquity periodicity to a new Middle Pleistocene state dominated by the eccentricity periodicity in the absence of any significant changes in orbital forcing, known as the Early-Middle Pleistocene transition (EMPT), is an unresolved issue of Milankovitch orbital theory. Here we contribute new insights into the orbital characteristic and dynamics of the Asian summer monsoon precipitation changes across the EMPT. Spectral analyses of precipitation over the past 1.6 Myr reconstructed from a new loess magnetic susceptibility (chi) stack suggest that the EMPT of the summer monsoon precipitation characterized by a shift from obliquity to eccentricity rhythm occurred over a similar to 640 kyr long-term period from similar to 1.24 to 0.6 Ma rather than quasi-instantaneously on a much shorter duration. The eccentricity cyclicity initiated as early as 1.24 Ma, subsequently intensified and became the dominated pacing from 1.1 Ma, while obliquity weakened at similar to 1.1 Ma and significantly weakened at similar to 0.7 Ma. These EMPT characteristics of the summer monsoon precipitation reflect complex impacts from global climate systems and regional climate changes in the Northern and Southern Hemispheres, and in both low- and high-latitude regions.
关键词	Chinese Loess Plateau Magnetic susceptibility Sea Surface Temperature Eccentricity Obliquity
DOI	10.1016/j.palaeo.2020.109636
关键词[WOS]	CHINESE LOESS ; MAGNETIC-SUSCEPTIBILITY ; ICE VOLUME ; ASTRONOMICAL TIMESCALE ; OCEAN TEMPERATURE ; NORTH-ATLANTIC ; MODERN SOILS ; CLIMATE ; EVOLUTION ; TIME
收录类别	SCI ; SCI
语种	英语
资助项目	Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0707] ; Key Research Program of Frontier Sciences, the Chinese Academy of Sciences[QYZDB-SSW-DQC021] ; Key Research Program of Frontier Sciences, the Chinese Academy of Sciences[QYZDY-SSWDQC001]
WOS研究方向	Physical Geography ; Geology ; Paleontology
项目资助者	Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Key Research Program of Frontier Sciences, the Chinese Academy of Sciences
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000526825900003
出版者	ELSEVIER
引用统计	被引频次：9[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/361006/12600
专题	古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Ao, Hong
作者单位	1.China Univ Geosci, Sch Geog & Informat Engn, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Peoples R China 5.Xian Univ Sci & Technol, Coll Geol & Environm, Xian 710054, Peoples R China
推荐引用方式 GB/T 7714	Peng, Xianzhe,Ao, Hong,Xiao, Guoqiao,et al. The Early-Middle Pleistocene transition of Asian summer monsoon[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,545:7.
APA	Peng, Xianzhe,Ao, Hong,Xiao, Guoqiao,Qiang, Xiaoke,&Sun, Qiang.(2020).The Early-Middle Pleistocene transition of Asian summer monsoon.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,545,7.
MLA	Peng, Xianzhe,et al."The Early-Middle Pleistocene transition of Asian summer monsoon".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 545(2020):7.