Testing of Drought Exceedance Probability Index (DEPI) for Turkey using PERSIANN data for 2000-2021 period

Drought is a climatic event that threatens the environment and human life with an ambiguity of location time. Recently, droughts can be analyzed for different periods help mathematical methods developing technology. This study aims to perform drought analysis in 126 designated points Turkey. The data includes monthly total precipitation values between March 2000 February 2021, obtained from PERSIANN system (Precipitation Estimation Remotely Sensed Information using Artificial Neural Networks). Monthly totals these were used as input parameters Exceedance Probability Index (DEPI) which new method. was conducted separately whole Turkey January December. Moreover, findings compared Standardized Precipitation (SPI), globally accepted commonly index, measure detection performance DEPI. SPI calculated 6, 12 24 months. Pearson correlation coefficients SPI-6, SPI-12 SPI-24 DEPI results calculated. second part possible trend determined by Mann-Kendall Both mapped visualized ArcGIS package program. highest 0.75, while lowest value 0.62. maps indicated wettest months February, driest July. Besides maps, October November, May June. showed significant increase summer.