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Beck JW, Zhou W, Li C, Wu Z, White L, Xian F, Kong X, An Z. A 550,000-year record of East Asian monsoon rainfall from 10Be in loess. Science 2018; 360:877-881. [PMID: 29798878 DOI: 10.1126/science.aam5825] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 03/30/2018] [Indexed: 11/02/2022]
Abstract
Cosmogenic 10Be 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 10Be monsoon rainfall proxy is also highly correlated with global ice-volume variations, which differs from Chinese cave δ18O, which is only weakly correlated. We argue that both EASM intensity and Chinese cave δ18O 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.
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Affiliation(s)
- J Warren Beck
- Department of Geosciences, University of Arizona, Tucson, AZ 85721, USA. .,Department of Physics, University of Arizona, Tucson, AZ 85721, USA.,NSF-Arizona Accelerator Mass Spectrometry Laboratory, University of Arizona, Tucson, AZ 85721, USA
| | - Weijian Zhou
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China. .,Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Cheng Li
- NSF-Arizona Accelerator Mass Spectrometry Laboratory, University of Arizona, Tucson, AZ 85721, USA
| | - Zhenkun Wu
- NSF-Arizona Accelerator Mass Spectrometry Laboratory, University of Arizona, Tucson, AZ 85721, USA.,State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Lara White
- Department of Geosciences, University of Arizona, Tucson, AZ 85721, USA.,NSF-Arizona Accelerator Mass Spectrometry Laboratory, University of Arizona, Tucson, AZ 85721, USA
| | - Feng Xian
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Xianghui Kong
- NSF-Arizona Accelerator Mass Spectrometry Laboratory, University of Arizona, Tucson, AZ 85721, USA.,State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
| | - Zhisheng An
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China.,Institute of Global Environmental Change, Jiaotong University, Xi'an 710061, China
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Rogal M, Hitchman MH, Buker ML, Tripoli GJ, Stajner I, Hayashi H. Modeling the effects of Southeast Asian monsoon outflow on subtropical anticyclones and midlatitude ozone over the Southern Indian Ocean. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jd012979] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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