Akpootu, D. O., Tijjani, B. I. and Gana, U. M. (2019) “Time Series and Empirical Orthogonal Transformation Using Meteorological Parameters across the Climatic Zones in Nigeria”, International Journal of Environment and Climate Change, 9(5), pp. 257-272. doi: 10.9734/ijecc/2019/v9i530113.