Comparison of four precipitation based meteorological drought indices in the Yesilirmak Basin, Turkey

Zeybekoglu U., Hezarani A. B., Keskin A.

IDOJARAS, vol.124, no.1, pp.129-141, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 124 Issue: 1
  • Publication Date: 2020
  • Doi Number: 10.28974/idojaras.2020.1.7
  • Journal Name: IDOJARAS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.129-141
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

Drought, which is often defined as not enough precipitation, does not a mean simple lack of precipitation. This condition, which occurs when humidity is less than the average value for many years, is caused by a disrupted balance between precipitation and evaporation in a region. It is very difficult to predict the start and the end time of drought. In the present study, the drought conditions of the stations selected from Yesilirmak Basin between 1970 and 2014 were determined by using Z-Score Index (ZSI), China-Z Index (CZI), Modified China-Z Index (MCZI), and Standard Precipitation Index (SPI), and the compliance of these indices to the SPI was investigated. It was determined that these indices gave parallel results to each other, and SPI detected drought earlier than other indices.