Use of stable isotopes to constrain estimation of losses to evaporation.

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Serval ID
serval:BIB_DE71847343F6
Type
Inproceedings: an article in a conference proceedings.
Collection
Publications
Institution
Title
Use of stable isotopes to constrain estimation of losses to evaporation.
Title of the conference
Proceedings of “Isotope-based studies of water partitioning and plant-soil interactions in forested and agricultural environments”
Author(s)
Ceperley N., Michelon A., Beria H., Larsen J., Schaefli B.
Publisher
International workshop on “Isotope-based studies of water partitioning and plant-soil interactions in forested and agricultural environments”
Address
Villa Montepaldi, San Casciano in Val di Pesa, Tuscany, Italy
Publication state
Published
Issued date
09/2017
Language
english
Abstract
Evaporation remains the component of the water and energy balances that is the hardest to quantify and measure, particularly in mountainous environments and hard to access sites. We use data from two catchments that we have instrumented, one in Burkina Faso (Tambarga, Gourma region) and one in Switzerland (Vallon de Nant, Vaud Alps) to estimate the evaporation with and with out use of stable isotopes. In both catchments, isotope data is being collected at a catchment scale from various components of the hydrologic cycle (glacier, stream, ground water, precipitation), and in Burkina Faso, at the tree scale (soil, xylem). In both catchments, we use apparent enrichment in isotopic values to infer evaporation, along the flow paths, and in Burkina Faso along the travel time within the tree. These results will be combined with hydro-meteorological measures to improve uncertainty estimates of the water fluxes in the catchments and at the tree scales.
Keywords
Keywords: evaporation, swiss alps, West Africa, stable isotopes, transpiration
Create date
23/01/2020 20:18
Last modification date
24/01/2020 7:19
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