A 550,000-year record of East Asian monsoon rainfall from 10Be in loess
J. Warren Beck,Weijian Zhou,Cheng Li,Zhenkun Wu,Zhenkun Wu,Lara White,Feng Xian,Xianghui Kong,Xianghui Kong,Zhisheng An +9 more
TLDR
A 550,000-year-long record of East Asian summer monsoon rainfall from Chinese loess is derived, arguing that both EASM intensity and Chinese cave δ18O are not governed by high-northern-latitude insolation, as suggested by others, but rather by low-latitudes interhemispheric insolation gradients, which may also strongly influence global ice volume via monsoon dynamics.Abstract:
Cosmogenic 10 Be flux from the atmosphere is a proxy for rainfall. Using this proxy, we derived a 550,000-year-long record of East Asian summer monsoon (EASM) rainfall from Chinese loess. This record is forced at orbital precession frequencies, with higher rainfall observed during Northern Hemisphere summer insolation maxima, although this response is damped during cold interstadials. The 10 Be monsoon rainfall proxy is also highly correlated with global ice-volume variations, which differs from Chinese cave δ 18 O, which is only weakly correlated. We argue that both EASM intensity and Chinese cave δ 18 O are not governed by high-northern-latitude insolation, as suggested by others, but rather by low-latitude interhemispheric insolation gradients, which may also strongly influence global ice volume via monsoon dynamics.read more
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A late Middle Pleistocene Denisovan mandible from the Tibetan Plateau
Fahu Chen,Fahu Chen,Frido Welker,Frido Welker,Frido Welker,Chuan-Chou Shen,Shara E. Bailey,Shara E. Bailey,Inga Bergmann,Simon J. Davis,Huan Xia,Hui Wang,Roman Fischer,Sarah E. Freidline,Tsai Luen Yu,Matthew M. Skinner,Matthew M. Skinner,Stefanie Stelzer,Stefanie Stelzer,Guangrong Dong,Qiaomei Fu,Guanghui Dong,Jian Wang,Dongju Zhang,Jean-Jacques Hublin,Jean-Jacques Hublin +25 more
TL;DR: Fossil evidence indicates that Denisovans occupied the Tibetan Plateau in the Middle Pleistocene epoch and successfully adapted to this high-altitude hypoxic environments long before the regional arrival of modern Homo sapiens.
Journal ArticleDOI
Precession-band variance missing from East Asian monsoon runoff
Steven C. Clemens,Ann Holbourn,Yoshimi Kubota,Kyung Eun Lee,Zhengyu Liu,Guangshan Chen,Arin D. Nelson,Baylor Fox-Kemper +7 more
TL;DR: A record of local precipitation and runoff from the East Chain Sea is presented, which indicates strong sensitivity to greenhouse gases and high latitude ice sheet forcing and suggests that East Asian monsoon rainfall is more sensitive to greenhouse gas and high-latitude ice sheetforcing than to direct insolation forcing.
Journal ArticleDOI
Monsoon-driven Saharan dust variability over the past 240,000 years.
Charlotte Skonieczny,Charlotte Skonieczny,David McGee,Gisela Winckler,Gisela Winckler,Aloys Bory,Aloys Bory,Louisa I Bradtmiller,C. W. Kinsley,Pratigya J. Polissar,R. De Pol-Holz,Linda Rossignol,Bruno Malaizé +12 more
TL;DR: The first Saharan dust record spanning multiple glacial cycles obtained using 230Th normalization, an improved method of calculating fluxes, is presented, indicating coherent variability in the African monsoon belt throughout the late Pleistocene.
Journal ArticleDOI
New insights on Chinese cave δ18O records and their paleoclimatic significance
Xiaokang Liu,Jianbao Liu,Jianbao Liu,Shengqian Chen,Jianhui Chen,Xu Zhang,Jingjing Yan,Fahu Chen,Fahu Chen +8 more
TL;DR: Wang et al. as discussed by the authors provided new insights into Chinese cave δ18O records and their paleoclimatic significance, based on recent research progress, and showed that Chinese cave records do not reflect changes in summer rainfall throughout the whole of eastern monsoonal China, which is evident by comparing monitored summer rainfall amount in eastern China and an integrated Chinese cave Δ18Osyn proxy.
References
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