Akademik Veri Yönetim Sistemi
9TH INTERNATIONAL CONFERENCE ON GLOBAL PRACTICE OF MULTIDISCIPLINARY SCIENTIFIC STUDIES, La Habana, Küba, 21 - 28 Ocak 2025, ss.196, (Özet Bildiri)
It is known that a wide variety of data sources are used in research and applications for drought evaluation. It is seen that reanalysis, remote sensing, satellite, and ground measurement data are used the most in the literature. The data sources to be selected may vary depending on the purpose, scale, drought type, data quality, and study continuity. Each data source has advantages and disadvantages compared to the others. In recent years, in many studies on hydrology, ERA 5 and ERA 5-Land data sources stand out with their superior aspects, such as easy access, suitability for global and large-scale field studies, high spatial and temporal resolutions, and long-term and continuous data provision. ERA 5-Land (9 km, ̴0.1̊) provides higher resolution compared to ERA 5 (31 km, 0.25 ̊) data. It is stated that ERA 5- Land provides an advantage due to its more detailed processing feature on land surfaces. In this research study, drought analyses were performed using both data sources, and the results obtained were compared. In order to verify the obtained drought results, drought analysis results obtained from ground measurement data were used. Standardized Precipitation Index (SPI) methodology was preferred as the drought index. Analyses were carried out for the reanalysis data at specific grid points and ground observation data in Kocaeli province. Different performance metrics and the Innovative drought Classification Matrix (IDCM) were used to compare and find their differences and similarities. The results will significantly enhance the evaluation of reanalysis data, providing a foundation for more accurate and reliable drought assessments.