Je. Paturel et al., CLIMATIC VARIABILITY AND LONG RAINFALL SE RIES ANALYSIS IN NON-SAHELIAN WESTERN AND CENTRAL-AFRICA, Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 325(10), 1997, pp. 779-782
Annual rainfall time series registered over a long duration for a set
of stations all over non-Sabelian Western and Central Africa have allo
wed the study of spatial and temporal rainfall evolution in this regio
n. The results underline the existence of alternating dry and wet peri
ods since the beginning of the 20th century. However, the current drou
ght has no equivalent neither regarding duration nor intensity, all ov
er the studied period.