ASSESSING DROUGHT BY STANDARDIZED PRECIPITATION INDEX WITH OBSERVATION AND CORDEX DATA IN TURKEY’S MEDITERRANEAN REGION

2018-06-02
Poyraz, Anıl
Yücel, İsmail
This study aims to assess the trends in drought by using the Standardized Precipitation Index(SPI) for 14 stations from Mediterranean climate region of Turkey. The SPI values for different timescales - from 1month to 1 year - are estimated for past and future by using the observed, uncorrected and bias corrected model data. The model data that correspond the grids which consist these 14 stations was obtained from 12 different climate models on CORDEX project. Bias correction method was applied using equivalent quantile method(EQM) for both historical (1971-2005) and future (2006-2050) model data. Then, observed and model precipitation data and SPI values were compared in order to select the most reliable models for the region. The root mean square error of SPI and precipitation values was the first statistic to measure the closeness of the models to the observed data. Finally, modified Mann-Kendall trend analysis test was applied on the SPI and precipitation values for the whole period (1971- 2050) for the most reliable models.

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Citation Formats
A. Poyraz and İ. Yücel, “ASSESSING DROUGHT BY STANDARDIZED PRECIPITATION INDEX WITH OBSERVATION AND CORDEX DATA IN TURKEY’S MEDITERRANEAN REGION,” 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/77005.