852 © IWA Publishing 2019 Journal of Water and Climate Change | 10.4 | 2019 Trends and changes detection in rainfall, temperature and wind speed in Burundi Agnidé Emmanuel Lawin, Célestin Manirakiza and Batablinlè Lamboni ABSTRACT This paper assessed the potential impacts of trends detected in rainfall, temperature and wind speed Agnidé Emmanuel Lawin (corresponding author) Laboratory of Applied Hydrology, National Water on hydro and wind power resources in Burundi. Two climatic stations located at two contrasting Institute, University of Abomey-Calavi, regions, namely Rwegura catchment and northern Imbo plain, were considered. Rainfall, P.O. Box 2041, Calavi, temperature and wind speed observed data were considered for the period 1950–2014 and future Benin E-mail:
[email protected] projection data from seven Regional Climate Models (RCMs) for the period 2021–2050 were used. Célestin Manirakiza The interannual variability analysis was made using standardized variables. Trends and rupture were Batablinlè Lamboni – – Institute of Mathematics and Physical Sciences, respectively detected through Mann Kendall and Pettitt non-parametric tests. Mann Whitney and University of Abomey-Calavi, Kolmogorov–Smirnov tests were considered as subseries comparison tests. The results showed a 01 BP 613, Porto-Novo, Benin downward trend of rainfall while temperature and wind speed revealed upward trends for the period 1950–2014. All models projected increases in temperature and wind speed compared to the baseline period 1981–2010. Five models forecasted an increase in rainfall at northern Imbo plain station while four models projected a decrease in rainfall at Rwegura station. November was forecasted by the ensemble mean model to slightly increase in rainfall for both stations.