Moussa Malam Abdou on Muck Rack

Moussa Malam Abdou

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Articles

Evidence of hydrological regime shifts associated with a major decades-long drought in West Africa

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By Erwan Le Roux, Gérémy Panthou, Basile Hector, Guillaume Favreau, Jean-Martial Cohard, Luc Descroix, Manuela Grippa, Pierre Hiernaux, Laurent Kergoat, Jean-Louis Rajot, Théo Vischel, Thierry Lebel, Christophe Peugeot, Valentin Wendling, Nathalie Rouché, Arthur Crespin-Boucaud, Farida Boubé Dobi, Jerôme Demarty, Jordi Etchanchu, Aghali Ingatan Warzagan, Moussa Malam Abdou, Eric Mougin, Caroline Pierre, Jean-Pierre Vandervaere
| Nature Verified
Abstract Using ground-based meteorological, hydrological and land cover datasets from 1950 to 2015, we provide evidence that the increase in runoff observed in the semi-arid central Sahel (West Africa) since the 1970-1995 drought is a shift between alternative stable states of low and high runoff. We propose a conceptual model, governed by feedback loops between vegetation and surface runoff, which describes the stabilising mechanisms of each state and the basin-scale impact of local shifts.
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