Adiku, S.G.K.Mawunya, F.D.Jones, J.W.Yangyouru, M.2019-04-082019-04-082007-01DOI: 10.1007/978-3-540-44650-7_20http://ugspace.ug.edu.gh/handle/123456789/29103Rainfall variability has become a major agricultural issue in sub-Saharan Africa, especially since crop production is mainly rainfed. Irrigation technologies are expensive and their implementation is slow. Many researchers now believe that some understanding of the causes of rainfall variability would lead to measures that could be used to investigate reduction in total rainfall and/or drought effects. © 2007 Springer-Verlag Berlin Heidelberg.enBook chapter