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  A dual-biomarker approach for quantification of changes in relative humidity from sedimentary lipid D/H ratios

Rach, O., Kahmen, A., Brauer, A., Sachse, D. (2017): A dual-biomarker approach for quantification of changes in relative humidity from sedimentary lipid D/H ratios. - Climate of the Past, 13, 7, 741-757.
https://doi.org/10.5194/cp-13-741-2017

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_2341889 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_2341889_4
Genre: Journal Article

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 Creators:
Rach, Oliver1, Author              
Kahmen, Ansgar2, Author
Brauer, A.3, Author              
Sachse, D.1, Author              
Affiliations:
15.1 Geomorphology, 5.0 Geoarchives, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146045              
2External Organizations, ou_persistent22              
35.2 Climate Dynamics and Landscape Evolution, 5.0 Geoarchives, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146046              

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 Abstract: 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.

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Language(s): eng - English
 Dates: 2017
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.5194/cp-13-741-2017
GFZPOF: p3 PT3 Earth Surface and Climate Interactions
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Title: Climate of the Past
Source Genre: Journal, SCI, Scopus, oa
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Pages: - Volume / Issue: 13 (7) Sequence Number: - Start / End Page: 741 - 757 Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals78