86
P. Sagna et al.
World Meteorological Organization (WMO) (2012) Standardized precipitation index. User Guide.
WMO-No. 1090, Geneva
World Meteorological Organization (WMO) (2016) Handbook of drought indictors and indices.
WMO-No. 1173, Geneva
Yira Y, Diekkrüger B, Steup G, Bossa AY (2017) Impact of climate change on hydrological conditions in a tropical West African catchment using an ensemble of climate simulations. Hydrol
Earth Syst Sci 21:2143–2161