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Temperature and leaf wax delta H-2 records demonstrate seasonal and regional controls on Asian monsoon proxies
Thomas, EK (Thomas, Elizabeth K.)[ 1 ]; Clemens, SC (Clemens, Steven C.)[ 1 ]; Prell, WL (Prell, Warren L.)[ 1 ]; Herbert, TD (Herbert, Timothy D.)[ 1 ]; Huang, YS (Huang, Yongsong)[ 1 ]; Liu, ZY (Liu, Zhengyu)[ 2 ]; Damste, JSS (Damste, Jaap S. Sinninghe)[ 3 ]; Sun, YB (Sun, Youbin)[ 4 ]; Wen, XY (Wen, Xinyu)[ 5 ]
2014-12-16
Source PublicationGEOLOGY
Volume42Issue:12Pages:1075-1078
Subtype期刊论文
Abstract

Orbital-scale precipitation isotope records can elucidate climate forcing mechanisms and provide benchmarks for climate model validation. The ability to differentiate the influence of temperature, seasonality, and vapor transport history on precipitation isotope proxies is critical to both objectives. We present a 300 k.y. leaf wax hydrogen isotope record from the South China Sea with the effects of local condensation temperature removed (delta H-2(wax-T)). delta H-2(wax-T) reflects annually integrated precipitation delta H-2 in the Pearl River catchment of southeast China. Depleted delta H-2(wax-T) lags minimum precession (P-min) by 1.0 +/- 0.7 k.y., reflecting the influence of maximum summer insolation and minimum winter insolation, with a minor influence of global ice volume, which lags P-min by 3.3 +/- 0.4 k.y. In contrast, annually integrated cave delta O-18 minima in central China, 1000 km north of our site, lag P-min by 2.7 +/- 0.3 k.y., in phase with ice volume minima. This phase indicates that precipitation delta O-18 in central China is more strongly influenced by ice volume forcing at the precession band, with a lesser influence of Northern Hemisphere insolation. Our new delta H-2(wax-T) data demonstrate that precipitation isotopes in Asia have strong regional variability. Interpreting water isotope records within the context of regionally varying temperature, seasonality, and sensitivity to changing glacial boundary conditions is imperative to understanding Asian hydroclimatic change.

DOI10.1130/G36289.1
Indexed BySCI ; EI
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/361006/9792
Collection古环境研究室
Corresponding AuthorThomas, EK (Thomas, Elizabeth K.)[ 1 ]
Affiliation1.Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, Rhode Island 02912, USA;
2.Department of Atmospheric and Ocean Sciences, University of Wisconsin–Madison, Madison, Wisconsin 53706, USA;
3.Department of Marine Organic Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Texel, Netherlands;
4.Laboratory for Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China;
5.Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics,Peking University, Beijing, China
Recommended Citation
GB/T 7714
Thomas, EK ,Clemens, SC ,Prell, WL ,et al. Temperature and leaf wax delta H-2 records demonstrate seasonal and regional controls on Asian monsoon proxies[J]. GEOLOGY,2014,42(12):1075-1078.
APA Thomas, EK .,Clemens, SC .,Prell, WL .,Herbert, TD .,Huang, YS .,...&Wen, XY .(2014).Temperature and leaf wax delta H-2 records demonstrate seasonal and regional controls on Asian monsoon proxies.GEOLOGY,42(12),1075-1078.
MLA Thomas, EK ,et al."Temperature and leaf wax delta H-2 records demonstrate seasonal and regional controls on Asian monsoon proxies".GEOLOGY 42.12(2014):1075-1078.
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