Articles | Volume 17, issue 5
https://doi.org/10.5194/cp-17-1903-2021
https://doi.org/10.5194/cp-17-1903-2021
Research article
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24 Sep 2021
Research article | Highlight paper |  | 24 Sep 2021

Stalagmite carbon isotopes suggest deglacial increase in soil respiration in western Europe driven by temperature change

Franziska A. Lechleitner, Christopher C. Day, Oliver Kost, Micah Wilhelm, Negar Haghipour, Gideon M. Henderson, and Heather M. Stoll

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Short summary
Soil respiration is a critical but poorly constrained component of the global carbon cycle. We analyse the effect of changing soil respiration rates on the stable carbon isotope ratio of speleothems from northern Spain covering the last deglaciation. Using geochemical analysis and forward modelling we quantify the processes affecting speleothem stable carbon isotope ratios and extract a signature of increasing soil respiration synchronous with deglacial warming.