Investigation of Precipitation and Extreme Indices Spatiotemporal Variability in Seyhan Basin, Turkey [2]

Abstract

Spatial and temporal variability of precipitation increases with the effect of climate change. In this study, the Seyhan Basin has been deter-mined as the study area. It is aimed to examine the spatiotemporal variability of precipitation and extreme precipitation indices in the SeyhanBasin. For this purpose, the period 1970-2019 was divided into three periods with the change point detection methods (Pettitt, BuishandRank and Standard Normal Homogeneity Test). Trends were examined by applying Modified Mann Kendall and Spearman's Rho tests to pre-cipitation and extreme indices for all periods and sub-periods. Then, temporal and spatial analyses of extreme indices were performed.According to the results obtained, there is no precipitation homogeneity throughout the basin. While the threat of drought comes to thefore with the decrease in rainy days and precipitation in the north, the risk offlooding is effective with the increase in precipitation intensityin the south