Peugeot, Christophe; Alexandre, Anne (2025): Soil water isotopes - extraction comparison [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.984875 (DOI registration in progress), In: Alexandre, Anne (2025): Climate and triple oxygen isotope of precipitation, groundwater, soil water, plant water, and phytolith data from West Africa (Benin and Senegal) [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.984133
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Published: 2025-11-24
Abstract:
Triple oxygen and hydrogen isotope compositions of soil water from two cores sampled in Nalohou, Benin (loamy soil core NA-19-05-19) and Dahra, Senegal (sandy soil core DA-24-08-19). The soil waters were extracted by centrifugation and by cryogenic distillation, and analyzed by Cavity Ring Dow Spectroscopy (CRDS). The data have been used to compare the extraction technics.
Related to:
Alexandre, Anne; Outrequin, Clément; Vallet-Coulomb, Christine; Peugeot, Christophe; Grippa, Manuela; Aleman, Julie C; Voigt, Claudia; Landais, Amaëlle; Mougin, Eric; Ndiaye, Ousmane; Sonzogni, Corinne; Yang, David Au; Mazur, Jean-Charles; Couapel, Martine; Ogée, Jérôme; Ouani, Theodore; Afouda, Simon; Wubda, Maxime; Soumaguel, Nogmana; Houngnon, Alfred; Tagesson, Torbern; Fensholt, Rasmus (2025): What Does the Triple Isotopic Composition of Oxygen in Precipitation, Groundwater, Soil Water, Plant Water, and Phytoliths Reveal About Current and Past Hydrological Cycles? Journal of Geophysical Research: Biogeosciences, 130(10), e2024JG008615, https://doi.org/10.1029/2024JG008615
Source:
AMMA-CATCH (1999): Precipitation dataset (5 minutes rainfall), 30 long-term stations over the upper Oueme watershed (14 000 km2), Benin [dataset]. IRD, CNRS-INSU, OSUG, OMP, OREME, https://doi.org/10.17178/AMMA-CATCH.CL.RAIN_O
AMMA-CATCH (2005): Surface flux dataset (including meteorological data, radiative budget, surface energy, water vapor and carbon fluxes), within the Donga watershed (600 km2), Benin [dataset]. IRD, CNRS-INSU, OSUG, OMP, OREME, https://doi.org/10.17178/AMMA-CATCH.AE.H2OFLUX_ODC
Funding:
Agence Nationale de la Recherche (ANR), grant/award no. ANR-17-CE01-0002: Past dynamic of continental atmospheric humidity and vegetation: new insights from the triple isotopic composition of oxygen (HUMI-17)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Campaign | Campaign | Peugeot, Christophe | |||
| 2 | Comment | Comment | Alexandre, Anne | |||
| 3 | Area/locality | Area | Alexandre, Anne | |||
| 4 | Sample code/label | Sample label | Alexandre, Anne | |||
| 5 | Depth, soil, minimum | Depth soil min | m | Alexandre, Anne | Soil corer | |
| 6 | Depth, soil, maximum | Depth soil max | m | Alexandre, Anne | Soil corer | |
| 7 | DEPTH, soil | Depth soil | m | Alexandre, Anne | Soil corer | Geocode – Average |
| 8 | Water content, dry mass | Water dm | % | Alexandre, Anne | Oven | Initial |
| 9 | Extract | Extract | % | Alexandre, Anne | Centrifugation and cryogenic distillation | Extracted water (% initial water); cf Alexandre et al., (2025). JGR |
| 10 | Extraction method | Extraction | Alexandre, Anne | Centrifugation and cryogenic distillation | cf Alexandre et al., (2025). JGR | |
| 11 | Laboratory | Lab | Alexandre, Anne | |||
| 12 | δ'18O, soil water | δ'18O soil w | ‰ SMOW | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | average, vs VSMOW |
| 13 | δ'18O, soil water, standard deviation | δ'18O soil w std dev | ± | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | |
| 14 | δ'17O, soil water | δ'17O soil w | ‰ SMOW | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | average, vs VSMOW |
| 15 | δ'17O, soil water, standard deviation | δ'17O soil w std dev | ± | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | |
| 16 | Oxygen-17 excess, soil water | 17O xs soil w | per meg | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | average |
| 17 | Oxygen-17 excess, soil water, standard deviation | 17O xs soil w std dev | ± | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | |
| 18 | Deuterium excess, soil water | d xs soil w | ‰ | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | average |
| 19 | Deuterium excess, soil water, standard deviation | d xs soil w std dev | ± | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | |
| 20 | Δδ'18O | Δδ'18O | ‰ | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | d'18O average: difference centrifugation-distillation |
| 21 | Δδ'17O | Δδ'17O | ‰ | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | d'17O average: difference centrifugation-distillation |
| 22 | Δ Oxygen-17 excess | Δ17O xs | per meg | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | 17O-excess average : difference centrifugation-distillation |
| 23 | Δ Deuterium excess | Δd xs | ‰ | Alexandre, Anne | Cavity ring-down spectroscopy (CRDS) | d-excess average : difference centrifugation-distillation |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
387 data points