Author : Mamounata Kabore, Barnabas.A. Amisigo and Sven Wagner

Global climate change impacts rainfall and temperature extremes and there is an important need to study the behaviour of extreme values. According to IPCC (2007), confidence has increased that some extremes will become more frequent, more widespread and/or more intense during the 21st century. The aim of this paper is to analyse the trend in rainfall and temperature extreme values in the Faga River Basin (15700 Km2 in the North-Eastern Burkina-Faso from 1982 through 2010. A total of eleven rainfall indices and ten temperature extremes from the recommended core indices of the World Meteorological Organization Commission for Climatology research project on Climate Variability and Predictability (WMO-CCl /CLIVAR) Expert Team for Climate Change Detection Monitoring and Indices (ETCCDMI) were computed using the R-based software (RClimDex). From 1982 through 2010, we observed a decrease in the number of consecutive wet days and the maximum 5-days precipitation amount while the remaining indices rainfall indices including the simple intensity index and the number of consecutive dry days. The temperature extremes indicate a warming weather with increase in the monthly maximum and minimum value of daily temperature, the warm spell indicator whereas the cold spell duration indicator and the Monthly maximum value of daily minimum temperature decrease.

Keywords: Climate change, extremes, warming, Burkina-Faso, Faga River Basin, rainfall, temperature

Article published in International Journal of Current Engineering and Technology, Vol.7, No.2 (April-2017)