Trends Analysis of Temperature and Rainfall over Nguru, a Floodplain of Hadejia-Nguru Wetlands, Nigeria

Abstract

Abstract:

This paper present the trends of meteorological parameters over Nguru, floodplain of Hadejia- Nguru Wetlands, Nigeria, with the aim of revealing increasing or decreasing trend within a 40 years monthly time series data of minimum temperature, maximum temperature, average temperature and rainfall. A non-parametric Mann-Kendall trend test and Sen’s slope estimate was used to analyse trends exhibited by the variables. The results reveal annual increasing (upward) trends of temperatures (minimum, maximum, and average) and annual decreasing (downward) trend within rainfall time series. It is concluded that there is variability of monthly trends of temperatures with minimum temperature showing an annual increasing trend at 90% level of confidence, maximum temperature at 99.9% level of confidence, average temperature at 99% level of confidence and rainfall showing an annual decreasing trend at confidence level above 90%.

Keywords: Climate change, Mann-Kendall test, rainfall, Sen’s slope estimate, temperature

Cite this Article
Abdullahi NI, Adie DB, Ajibike MA et al.
Trends Analysis of Temperature and
Rainfall over Nguru, a Floodplain of
Hadejia-Nguru Wetlands, Nigeria. Journal
of Water Resource Engineering and
Management. 2017; 4(3): 1–9p.