Skip to Main content Skip to Navigation
Journal articles

Contrasted land-surface processes along the West African rainfall gradient - Monsoon Multidisciplinary Analysis (AMMA) : an integrated project for understanding of the West African climate system and its human dimension

L. Seguis 1 N. Boulain 1 B. Cappelaere 1 J.M. Cohard 2 Guillaume Favreau 1 Sylvie Galle 2 A. Guyot 3 Pierre Hiernaux 4 Éric Mougin 5 C. Peugeot 1 D. Ramier 6 Josiane Seghieri 1 Franck Timouk 5 Valérie Demarez 5 J. Demarty 1 Luc Descroix 2 Marc Descloitres 2 Manuela Grippa 7 F. Guichard 8 B. Kamagate 9 L. Kergoat 10 Thierry Lebel 2 Valérie Le Dantec 11 M. Le Lay 12 Sylvain Massuel 13 V. Trichon 14
1 HSM - Hydrosciences Montpellier
2 LTHE - Laboratoire d'étude des transferts en hydrologie et environnement
3 TIMA - Techniques de l'Informatique et de la Microélectronique pour l'Architecture des systèmes intégrés
4 LMTG - Laboratoire des Mécanismes et Transfert en Géologie
5 CESBIO - Centre d'études spatiales de la biosphère
6 Cerema Direction Ile-de-France - Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Direction Ile-de-France
7 GET - Géosciences Environnement Toulouse
8 CNRM-GAME - Groupe d'étude de l'atmosphère météorologique
9 Sciences et Gestion de l'Environnement
10 INS - Institut de Neurosciences des Systèmes
11 Centre d'Etude Spatial de la Biosphère
12 EDF R&D STEP - Simulation et Traitement de l'information pour l'Exploitation des systèmes de Production
13 UMR G-EAU - Gestion de l'Eau, Acteurs, Usages
14 ECOLAB - Laboratoire Ecologie Fonctionnelle et Environnement
Abstract : We review the main results of land-surface studies obtained in the three sites of the long-term observing system AMMA-CATCH. Runoff in the Sahel enhances the variability of energy partitioning between non-infiltrative areas where sensible heat is dominant and infiltrative areas where soil water availability increases the latent flux. In terms of water resources, an increase in runoff over the past 50 years, already reported for the exoreic Sahel, was revealed in the endoreic Sahel. In the Sudanian domain, the subsurface origin of streamflow could explain its decrease over the same period.
Keywords : energy fluxes runoff groundwater Sahel Sudanian climate water resources
Document type :
Journal articles
Complete list of metadata
https://hal.ird.fr/ird-02153235
Contributor : Francine Delmas <>
Submitted on : Saturday, July 24, 2021 - 11:35:20 AM
Last modification on : Wednesday, September 15, 2021 - 10:48:03 AM

File

Vignette du document
oa-010053184_remplace.pdf
Files produced by the author(s)

Licence

Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

IRD | UNIV-TLSE3 | IRSTEA | HSM | OMP-CESBIO | OMP-GET | OMP-ECOLAB | AGROPOLIS | UNIV-SAVOIE | CIRAD | AGROPARISTECH | UNIV-MONTPELLIER | OMP | EDF | UNIV-AMU | G-EAU | UGA | CNRS | INRAE | CEREMA | MONTPELLIER-SUPAGRO | B3ESTE | INSU | TIMA | INRAEOCCITANIEMONTPELLIER | METEO

Citation

L. Seguis, N. Boulain, B. Cappelaere, J.M. Cohard, Guillaume Favreau, et al.. Contrasted land-surface processes along the West African rainfall gradient - Monsoon Multidisciplinary Analysis (AMMA) : an integrated project for understanding of the West African climate system and its human dimension. Atmospheric Science Letters, Wiley, 2011, 12 (1), pp.31-37. ⟨10.1002/asl.327⟩. ⟨ird-02153235v2⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

282

Files downloads

203