Estimating Drought Index Using Standardized Precipitation Index from 1901 to 2015, Turkey #

Complete administration and decision making inthe subject of water resources needs dependable forecast for drought region,duration and severity. The major objective of this study is to determinedrought features which are significant for drought awareness and managementusing rainfall data for 115 years (1901-2015) by compute StandardizedPrecipitation Index (SPI) values in different time scales (1, 3, 6 and 12months), where the SPI is used for Drought Early Warning. The drought index is foundedon monthly precipitation, SPI calculated over the Turkey region 38.9637 °N and35.2433° E, at time scales of 1, 3, 6 and 12 months for the period 1901–2015. Trendsin SPI values denote that the ratio of Turkey experiencing extreme and/or severedrought provisions has different considerably through these years.