Assessing the impact of climate variability and climate change on runoff in West Africa: The case of Senegal and Nakambe River basins

Karambiri Harouna, Garcia Galiano S.G., Giraldo J.D., Yacouba Hamma, Ibrahim Boubacar, Barbier Bruno, Polcher Jan. 2011. Assessing the impact of climate variability and climate change on runoff in West Africa: The case of Senegal and Nakambe River basins. Atmospheric Science Letters, 12 (1) : 109-115.

Quartile : Q2, Sujet : METEOROLOGY & ATMOSPHERIC SCIENCES

Résumé : West Africa and its people are very vulnerable to climate variability and changes. Increasing the knowledge of plausible trends of rainfall dry spell lengths (DSL) in the rainy season, and of runoff, enables the assessment of vulnerability and adaptive capacity of the system. These predictions are crucial from a water management and policy perspective. The analyses based on regional climate models (RCMs) and observed datasets exhibit non-stationary behavior and an increase of DSL. Our results highlight the difficulty of selected RCMs to reproduce present climate and their divergence in predicting future climate. Impacts on water resources depend not only on climate forcing but also on land surface conditions.

Mots-clés Agrovoc : changement climatique, gestion des eaux

Mots-clés géographiques Agrovoc : Sénégal

Classification Agris : P10 - Ressources en eau et leur gestion
P40 - Météorologie et climatologie
U10 - Informatique, mathématiques et statistiques

Champ stratégique Cirad : Axe 6 (2005-2013) - Agriculture, environnement, nature et sociétés

Auteurs et affiliations

• Karambiri Harouna, 2IE (BFA)
• Garcia Galiano S.G., Technical University Cartagena (ESP)
• Giraldo J.D., Technical University Cartagena (ESP)
• Yacouba Hamma, 2IE (BFA)
• Ibrahim Boubacar, 2IE (BFA)
• Barbier Bruno, CIRAD-ES-UMR G-EAU (BFA) ORCID: 0000-0002-9196-7051
• Polcher Jan, Université Pierre et Marie Curie (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/558783/)

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