DOI: 10.5194/cp-13-741-2017
Scopus记录号: 2-s2.0-85021753591
论文题名: A dual-biomarker approach for quantification of changes in relative humidity from sedimentary lipid D/H ratios
作者: Rach O. ; Kahmen A. ; Brauer A. ; Sachse D.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2017
卷: 13, 期: 7 起始页码: 741
结束页码: 757
语种: 英语
英文摘要: Past climatic change can be reconstructed from sedimentary archives by a number of proxies. However, few methods exist to directly estimate hydrological changes and even fewer result in quantitative data, impeding our understanding of the timing, magnitude and mechanisms of hydrological changes. Here we present a novel approach based on δ2H values of sedimentary lipid biomarkers in combination with plant physiological modeling to extract quantitative information on past changes in relative humidity. Our initial application to an annually laminated lacustrine sediment sequence from western Europe deposited during the Younger Dryas cold period revealed relative humidity changes of up to 15 % over sub-centennial timescales, leading to major ecosystem changes, in agreement with palynological data from the region. We show that by combining organic geochemical methods and mechanistic plant physiological models on well characterized lacustrine archives it is possible to extract quantitative ecohydrological parameters from sedimentary lipid biomarker δ2H data. © Author(s) 2017. 资助项目: ERC, European Research Council
; DFG, Massachusetts Department of Fish and Game
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48907
Appears in Collections: 气候变化与战略
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Recommended Citation:
Rach O.,Kahmen A.,Brauer A.,et al. A dual-biomarker approach for quantification of changes in relative humidity from sedimentary lipid D/H ratios[J]. Climate of the Past,2017-01-01,13(7)