6533b855fe1ef96bd12afdc6
RESEARCH PRODUCT
Flux heterogeneity and evapotranspiration partitioning in a sparse canopy: the fallow savanna
Andrée TuzetO. ZurfluhA. PerrierJean-françois Castellsubject
HydrologyCanopygeographyFlow monitoringgeography.geographical_feature_category010504 meteorology & atmospheric sciences[SDV]Life Sciences [q-bio]0207 environmental engineering02 engineering and technology15. Life on landSolar irradiance01 natural sciencesGrassland[SDV] Life Sciences [q-bio]Flux (metallurgy)Latent heatEvapotranspirationEnvironmental scienceSpatial variability020701 environmental engineering0105 earth and related environmental sciencesWater Science and Technologydescription
Abstract This paper focuses on in situ measurements obtained during the intensive observation period of the HAPEX-Sahel experiment. Micrometeorological measurements and trunk sap flow monitoring were combined to analyse transfer characteristics of a fallow savanna site within the East Central Supersite. Results show that the shrub canopy heterogeneity induces a large spatial variability of solar irradiance, soil heat flux and sensible and latent heat fluxes at the grassland level. This variability is induced by both a “shade effect” and a “wake effect”. Both shrubs and grassland provide sources of vapour, but the partitioning of evapotranspiration between these two components varies considerably with soil surface water availability.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-02-01 | Journal of Hydrology |