Investigation of homogeneity test of annual total precipitation of Konya Closed Basin with standard normal homogeneity test

Abstract

In this study, the homogeneity of the total precipitation data of 11 Meteorology observation stations located in the Konya Closed Basin was examined using Standard Normal Homogeneity Test (SNHT). The data used in the study are between 1972 and 2020. The analyzes were performed using the XLSTAT software at the 95 percent confidence interval and the results were mapped using the Inverse Distance Weighting (IDW) method. When the results were examined, it was determined that the data were homogeneous in only 1 of the 11 stations in the region (Niğde station). This result showed that the data in many stations in the study area did not come from the same cluster and the data may show an increasing or decreasing trend over time. The IDW map provides information about the spatial distribution of the results. When the IDW interpolation map of the results was examined, it was determined that the Niğde station located in the east of the study area was homogeneous, the stations in the other regions were not homogeneous and the SNHT p values were higher in the middle inner parts of the study area.