4 Discussion The trend result in this paper corroborates the findings of [ 5 ] from which the rainfall indices on a daily basis do not show a significant trend in the Sahelian city of Ouagadougou (Burkina Faso).
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Extreme rainfall characterisation under climate change and rapid population growth in the city of Niamey, Niger.
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The findings of the present paper show that extreme rainfall in the city of Niamey neither exhibit a positive trend in magnitude nor in frequency during the study period The population data used as threshold covariate in the non-stationary POT indicated that the threshold above which extreme rainfall is defined decreases over time leading to more threshold exceedances compared to the stationary POT.