Vegetation-corrected plant-wax reconstruction of precipitation δ²H at Rotsee, Switzerland, over the past 12.9 ka

https://doi.pangaea.de/10.1594/PANGAEA.997939Santos, Ricardo NRicardo NSantos0000-0002-8252-3619University of BaselNelson, Daniel BDaniel BNelson0000-0002-2716-7770University of BaselKlatt, AntoniaAntoniaKlattUniversity of BaselSchubert, Carsten JCarsten JSchubert0000-0003-1668-5967Swiss Federal Institute of Aquatic Science and TechnologyDubois, NathalieNathalieDubois0000-0003-2349-0826Swiss Federal Institute of Aquatic Science and TechnologyDe Jonge, CindyCindyDe Jonge0000-0002-1127-8433ETH ZurichLadd, S NemiahS NemiahLadd0000-0002-0132-5785University of BaselVegetation-corrected plant-wax reconstruction of precipitation δ²H at Rotsee, Switzerland, over the past 12.9 kaPANGAEA2026DEPTH, sediment/rockAGEδ Deuterium, precipitation, reconstructed, medianδ Deuterium, precipitation, reconstructed, 68% confidence interval, lower limitδ Deuterium, precipitation, reconstructed, 68% confidence interval, upper limitGravity corer, UWITECAge, calibratedn-Alkane relative-abundance-based vegetation correction; see reference(s)2021-10-03T00:00:00/2021-10-05T00:00:00Dataset10.1029/2025PA00540110.1594/PANGAEA.987812189 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThis dataset contains a vegetation-corrected reconstruction of the hydrogen isotope composition of precipitation (δ2Hprc) from sediment core ROT21, collected from Rotsee in central Switzerland in October 2021. The record covers 0.0567–12.8696 ka BP and comprises 63 observations reported with sediment depth and calibrated age. Reconstructed δ2Hprc values were calculated from measured n-C29 alkane δ2H values. Changes in the relative contributions of grasses and woody plants were accounted for using the relative abundances of long-chain n-alkanes and vegetation-specific apparent hydrogen isotope fractionation factors derived from a compilation of modern European plant-wax measurements. Uncertainty was propagated using 10,000 Monte Carlo simulations per sample; the dataset reports the central reconstructed values and the lower and upper limits of the 68% confidence interval in per mil relative to Vienna Standard Mean Ocean Water (VSMOW). The reconstruction was produced to separate variation in precipitation isotope composition from changes in sedimentary plant-wax δ2H caused by shifts in vegetation. The vegetation correction and uncertainty propagation were implemented using the R scripts by Santos (2026) archived at Zenodo (https://doi.org/10.5281/zenodo.18694984); the development repository is available at https://github.com/RicardoANSantos/Rotsee_d2Hprc. The underlying measured plant-wax data are archived in PANGAEA under doi:10.1594/PANGAEA.987812, and the complete methodology is described by Santos et al. (2026).9.313333348.0694444 Rotsee, SwitzerlandUniversity of Baselhttps://ror.org/02s6k3f65PCEFP2 194211ADAPT: Algal Dynamics And Productivity through