Author(s): Ioannis M. Kourtis; Vasilis Bellos; Ioanna Zotou; Harris Vangelis; Vassilios A. Tsihrintzis
Linked Author(s): Vassilios A. Tsihrintzis, Vasilis Bellos
Keywords: No Keywords
Abstract: In the present work, Intensity-Duration-Frequency (IDF) curves are developed based on a global precipitation dataset, namely the satellite dataset of the National Oceanic and Atmospheric Administration (NOAA) called Climate Prediction Center Morphing (CMORPH) product. IDF curves were developed using the Generalized Extreme Value Distribution (GEV). Parameters of the distribution were estimated employing the L-Moments method, for time scales ranging from 30 min to 48 h and for return periods of 2,5, 10,25,50,100,500,1, 000 and 10,000 years. Furthermore, the satellite-based IDF curves were compared, a "point-to-pixel" analysis, with the rain gauge-based IDF curves recently developed by the Greek Flood Risk Management Plan for Thessaly River Basin District. The results revealed a variability ranging from about -15 % to about 60 %, depending on the duration and the return period examined. Overall, as the return period increases the percent difference decreases.
Year: 2022