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Heterodynes dominate precipitation isotopes in the East Asianmonsoon region, reflecting interaction of multiple climate factors
Thomas,E K.(Thomas,Elizabeth K.)[1]; Clemens,S C.(Clemens,Steven C.)[1]; Sun,YB(Sun,Youbin)[2]; Prell,W L(Prell,Warren L)[1]; Huang,YS(Huang,Yongsong)[1]; Li,G(Li,Gao)[1]; Loomis S(Loomis Shannon)[3]; Chen, GS(Chen,Guangshan)[4]; Liu,ZY(Liu,Zhengyu)[4]
2016-10-01
Source PublicationEarth and Planetary Science Letters
Volume455Issue:2016Pages:196-206
Subtype期刊论文
Abstract

For the past decade, East Asian monsoon history has been interpreted in the context of an exceptionally well-dated, high-resolution composite record of speleothem oxygen isotopes (δ18Ocave) from the Yangtze River Valley. This record is characterized by a unique spectral response, with variance concentrated predominantly within the precession band and an enigmatic lack of variance at the eccentricity and obliquity bands. Here we examine the spectral characteristics of all existing >250-kyr-long terrestrial water isotope records in Asia, including a new water isotope record using leaf wax hydrogen isotope ratios from the Chinese Loess Plateau. There exist profound differences in spectral characteristics among all orbital-scale Asian water isotope records. We demonstrate that these differences result from latitudinal gradients in the influence of the winter and summer monsoons, both of which impact climate and water isotopes throughout East Asia. Water isotope records therefore do not reflect precipitation during a single season or from a single circulation system. Rather, water isotope records in East Asia reflect the complex interplay of oceanic and continental moisture sources, operating at multiple Earth-orbital periods. These non-linear interactions are reflected in water isotope spectra by the presence of heterodynes. Although complex, we submit that water isotope records, when paired with rapidly developing isotope-enabled model simulations, will have the potential to elucidate mechanisms causing seasonal precipitation variability and moisture source variability in East Asia.

DOI10.1016/j.epsl.2016.09.044
Indexed BySCI
Language英语
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5916
Collection古环境研究室
Affiliation1.Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, RI 02912, USA;
2.State Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences, Xi’an, 710061, China;
3.Jackson School of Geosciences, The University of Texas at Austin, Austin, TX, USA;
4.Department of Atmospheric and Ocean Sciences, University of Wisconsin–Madison, Madison, WI, USA
Recommended Citation
GB/T 7714
Thomas,E K.,Clemens,S C.,Sun,YB,et al. Heterodynes dominate precipitation isotopes in the East Asianmonsoon region, reflecting interaction of multiple climate factors[J]. Earth and Planetary Science Letters,2016,455(2016):196-206.
APA Thomas,E K..,Clemens,S C..,Sun,YB.,Prell,W L.,Huang,YS.,...&Liu,ZY.(2016).Heterodynes dominate precipitation isotopes in the East Asianmonsoon region, reflecting interaction of multiple climate factors.Earth and Planetary Science Letters,455(2016),196-206.
MLA Thomas,E K.,et al."Heterodynes dominate precipitation isotopes in the East Asianmonsoon region, reflecting interaction of multiple climate factors".Earth and Planetary Science Letters 455.2016(2016):196-206.
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