Articles | Volume 20, issue 4
https://doi.org/10.5194/cp-20-841-2024
https://doi.org/10.5194/cp-20-841-2024
Research article
 | 
08 Apr 2024
Research article |  | 08 Apr 2024

Reconstruction of warm-season temperatures in central Europe during the past 60 000 years from lacustrine branched glycerol dialkyl glycerol tetraethers (brGDGTs)

Paul D. Zander, Daniel Böhl, Frank Sirocko, Alexandra Auderset, Gerald H. Haug, and Alfredo Martínez-García

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Cited articles

Albert, J., Zander, P. D., Grosjean, M., and Sirocko, F.: Fine-tuning of sub-annual resolution spectral index time series 2 from Eifel maar sediments, Western Germany, to the NGRIP 3 δ18O chronology, 26–60 ka, Quaternary, in review, 2024. 
Ampel, L., Bigler, C., Wohlfarth, B., Risberg, J., Lotter, A. F., and Veres, D.: Modest summer temperature variability during DO cycles in western Europe, Quaternary Sci. Rev., 29, 1322–1327, https://doi.org/10.1016/j.quascirev.2010.03.002, 2010. 
Anhäuser, T., Sirocko, F., Greule, M., Esper, J., and Keppler, F.: D / H ratios of methoxyl groups of the sedimentary organic matter of Lake Holzmaar (Eifel, Germany): A potential palaeoclimate/-hydrology proxy, Geochim. Cosmochim. Ac., 142, 39–52, https://doi.org/10.1016/j.gca.2014.08.001, 2014. 
Auderset, A., Schmitt, M., and Martínez-García, A.: Simultaneous extraction and chromatographic separation of n-alkanes and alkenones from glycerol dialkyl glycerol tetraethers via selective Accelerated Solvent Extraction, Org. Geochem., 143, 103979, https://doi.org/10.1016/j.orggeochem.2020.103979, 2020. 
Bechtel, A., Smittenberg, R. H., Bernasconi, S. M., and Schubert, C. J.: Distribution of branched and isoprenoid tetraether lipids in an oligotrophic and a eutrophic Swiss lake: Insights into sources and GDGT-based proxies, Org. Geochem., 41, 822–832, https://doi.org/10.1016/j.orggeochem.2010.04.022, 2010. 
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Short summary
Bacterial lipids (branched glycerol dialkyl glycerol tetraethers; brGDGTs) extracted from lake sediments were used to reconstruct warm-season temperatures in central Europe during the past 60 kyr. Modern samples were used to test and correct for bias related to varying sources of brGDGTs. The temperature reconstruction is significantly correlated with other temperature reconstructions but features less millennial-scale variability, which is attributed to the seasonal signal of the proxy.
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