1. Abaje IB, Ati OF, Iguisi EO (2011) Drought in the north eastern part of Nigeria and the risks on human health. Proceedings of the International Conference of the Nigerian Meteorological Society. 527-538
2. Abiodun BJ, Lawal KA, Salami AT, Abatan AA (2012) Potential influences of global warming on future climate and extreme events in Nigeria. Reg Environ Chang 13:477–491. https://doi.org/10.1007/s10113-012-0381-7
3. Abramowitz M, Stegun A (1965) Handbook of mathematical formulas, graphs, and mathematical tables. Dover Publications. Inc., New York
4. Adefolalu DO (1986) Further aspects of Sahelian drought as evidence from rainfall regime of Nigeria, archives for meteorology geophysics bioclimatology. Ser. B 36: 277–295
5. Adeyeri OE, Lawin AE, Laux P, Ishola KA, Ige SO (2019) Analysis of climate extreme indices over the Komadugu-Yobe basin, Lake Chad region: past and future occurrences. Weather Clim Extremes 23:100194. https://doi.org/10.1016/j.wace.2019.100194