Alexandre, Anne (2025): Soil water isotopes from West Africa (Benin and Senegal) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.986612 (DOI registration in progress), In: Alexandre, A (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:
Isotopic composition of soil water extracted by centrifugation and analyzed by Cavity Ring Dow Spectroscopy (CRDS) from 10 soil cores collected at Belefoungou (BE, Benin), Nalohou (NA, Benin) and Dahra (DA, Senegal). For comparison, the isotopic composition of precipitation preceding the samplings are shown.
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
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)
Coverage:
Median Latitude: 11.624000 * Median Longitude: -4.060667 * South-bound Latitude: 9.733000 * West-bound Longitude: -15.482000 * North-bound Latitude: 15.356000 * East-bound Longitude: 1.700000
Date/Time Start: 2018-09-18T00:00:00 * Date/Time End: 2019-08-24T00:00:00
Minimum DEPTH, soil: 0.040 m * Maximum DEPTH, soil: 2.135 m
Event(s):
Bellefoungou_met * Latitude: 9.733000 * Longitude: 1.600000 * Location: Bellefoungou, Benin * Method/Device: Meteorological station * Comment: AMMA-CATCH Meteorological station
Comment:
Soils and plants were collected in 4m2 fenced sampling plots a few meters from the meteorological stations
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Alexandre, Anne | |||
| 2 | Location | Location | Alexandre, Anne | |||
| 3 | DATE/TIME | Date/Time | Alexandre, Anne | Geocode – Date | ||
| 4 | Sample code/label | Sample label | Alexandre, Anne | The label include the site (e.g. BE), the core (e.g. P1), the horizon (e.g. A2-1) and the date of coring with ddmmyy (e.g. 180918) | ||
| 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 |
| 8 | Soil horizon | Soil hori | Alexandre, Anne | |||
| 9 | Water content, dry mass | Water dm | % | Alexandre, Anne | Oven | Initial |
| 10 | Extract | Extract | % | Alexandre, Anne | Centrifuge (CENT) | Extracted water (% initial water) |
| 11 | Extraction method | Extraction | Alexandre, Anne | Centrifuge (CENT) | ||
| 12 | Laboratory | Lab | Alexandre, Anne | |||
| 13 | δ'18O, soil water | δ'18O soil w | ‰ SMOW | Alexandre, Anne | average, vs VSMOW | |
| 14 | δ'18O, soil water, standard deviation | δ'18O soil w std dev | ± | Alexandre, Anne | Cavity Ring-Down Spectrometer (CRDS) | |
| 15 | δ'17O, soil water | δ'17O soil w | ‰ SMOW | Alexandre, Anne | Cavity Ring-Down Spectrometer (CRDS) | average, vs VSMOW |
| 16 | δ'17O, soil water, standard deviation | δ'17O soil w std dev | ± | Alexandre, Anne | Cavity Ring-Down Spectrometer (CRDS) | |
| 17 | Oxygen-17 excess, soil water | 17O xs soil w | per meg | Alexandre, Anne | Cavity Ring-Down Spectrometer (CRDS) | average |
| 18 | Oxygen-17 excess, soil water, standard deviation | 17O xs soil w std dev | ± | Alexandre, Anne | Cavity Ring-Down Spectrometer (CRDS) | |
| 19 | Deuterium excess, soil water | d xs soil w | ‰ | Alexandre, Anne | Cavity Ring-Down Spectrometer (CRDS) | average |
| 20 | Deuterium excess, soil water, standard deviation | d xs soil w std dev | ± | Alexandre, Anne | Cavity Ring-Down Spectrometer (CRDS) | |
| 21 | Δδ'18O | Δδ'18O | ‰ | Alexandre, Anne | soil water - precipitation preceding sampling | |
| 22 | Δδ'17O | Δδ'17O | ‰ | Alexandre, Anne | soil water - precipitation preceding sampling | |
| 23 | Δ Oxygen-17 excess | Δ17O xs | per meg | Alexandre, Anne | soil water - precipitation preceding sampling | |
| 24 | Δ Deuterium excess | Δd xs | ‰ | Alexandre, Anne | soil water - precipitation preceding sampling |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1620 data points