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| dc.contributor.author | Aniley, Endege | |
| dc.date.accessioned | 2026-09-24T08:30:14Z | |
| dc.date.available | 2026-09-24T08:30:14Z | |
| dc.date.issued | 2023-12 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/17372 | |
| dc.description.abstract | Rainfall is one of the most important hydrological and climatic elements for manyapplications. Satellite/reanalysis rainfall products have recently become an alternative sourceto rain gauges and have shown broader application. This study evaluated the performance ofClimate Hazard Group Infrared Precipitation with stations version 2.0 (CHIRPS v2.0) andMulti-Source Weighted-Ensemble Precipitation version 2.8 (MSWEP v2.8) products against observed data were evaluated. Rainfall climatology was simulated for differentagroecological zones (AEZs) of Ethiopia for the period 1991-2020 at different temporalscales ranging from daily to annual. Rainfall occurrence detection capabilities were assessedusing suites of performance evaluation measures, such as the probability of detection (POD),false alarm ratio (FAR), frequency bias index (FBI), and critical success index (CSI). In addition, statistical evaluation metrics were used, including mean absolute error (MAE), rootmean square error (RMSE), percent bias (PBIAS), correlation coefficient (r), and Kling Gupta efficiency (KGE). The result showed that CHIRPS v2.0 is preferable for estimatingmonthly, seasonal, and annual rainfall totals, and MSWEP v2.8 for daily rainfall have shownbetter performance over all AEZs. The two products display comparable performance fordetecting daily rainfall occurrences over alpine AEZ, but MSWEP v2.8 is superior in the restfour AEZs. CHIRPS v2.0 outperforms MSWEP v2.8 for detecting most of the daily rainfallintensity classes over all AEZs. Overall, the two rainfall products can be used for climatesimulation over tropical, subtropical, temperate, and alpine AEZs, but not over the desertAEZ of Ethiopia. The findings of this study will play a noteworthy role to improve the quality of hydro-climate studies in Ethiopia. Generally, for both grid-based and station wise nationallevel studies, I recommend CHIRPS v2.0 for monthly, Bega season, Belg season, Kiremt season and annual temporal scales and MSWEP v2.8 for daily time step studies. | en_US |
| dc.language.iso | en | en_US |
| dc.subject | Environment and climate change | en_US |
| dc.title | Evaluating the Performances of Gridded Satellite/Reanalysis Products in Representing the Rainfall Climatology of Ethiopia | en_US |
| dc.type | Thesis | en_US |
