期刊名称：Research Journal of Environmental and Earth Sciences
印刷版ISSN：2041-0484
电子版ISSN：2041-0492
出版年度：2009
卷号：1
期号：2
页码：58-63
出版社：Maxwell Science Publications
摘要：Rainfall data spanning a period of 50 years (1953-2002) for 9 stations in northern N igeria were used to determine the trend in annual rainfall for the region. 5-year running mean was calculated for annual rainfall for the selected stations. The decadal means were compared with the long-term mean. Evidence from the nine stations considered shows that there is significant increase in annual rainfall amount in the last decade of the study. It means, therefore, that we are experiencing wetter conditions in the sudano-sahelian zone of Nigeria. Increasing annual rainfall totals portend both good and ill. Good, because there is improvement in water supply to an otherwise marginal area. Ill, because flooding, dam collapse as a result of excessive rainfall on an impervious terrain could lead to damage to life and property.
