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; N. Boulain; B. Cappelaere; J.M. Cohard; Guillaume Favreau; Sylvie Galle; A. Guyot; Pierre Hiernaux; Éric Mougin; C. Peugeot; D. Ramier; Josiane Seghieri; Franck Timouk; Valérie Demarez; J. Demarty; Luc Descroix; Marc Descloitres; Manuela Grippa; F. Guichard; B. Kamagate; L. Kergoat; Thierry Lebel; Valérie Le Dantec; M. Le Lay; Sylvain Massuel; V. Trichon

doi:10.1002/asl.327

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

Domain :

Sciences of the Universe [physics]

Sciences of the Universe [physics] / Continental interfaces, environment

Sciences of the Universe [physics] / Earth Sciences

Sciences of the Universe [physics] / Earth Sciences / Hydrology

Sciences of the Universe [physics] / Earth Sciences / Geomorphology

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https://hal.ird.fr/ird-02153235
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Submitted on : Saturday, July 24, 2021 - 11:35:20 AM
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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

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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

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