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| dc.contributor.author | ANLEY, LIYEW | |
| dc.date.accessioned | 2023-06-06T12:41:10Z | |
| dc.date.available | 2023-06-06T12:41:10Z | |
| dc.date.issued | 2023-03 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/15339 | |
| dc.description.abstract | As the world metrological organization reported African countries have uneven topography and insufficient metrological information. For this reason, retrieving satellite-based rainfall products has been crucial and it is used as a substitute for ground sources of rainfall estimation. The main aim of this research is to evaluating and compare major water balance components by retrieving satellite products and show as an alternative for ground-based observation data. Both continuous and categorical statistical performance were employed in the comparison to compare with the satellite products and ground-based observation at each aerial weighted station. Throughout the period of (2002–2018), all satellite rainfall products with varying spatial resolutions were convert into equivalent spatial resolution and then both point-to-pixel weighted aerial method were used. Every station created a Thiessen polygon. Comparison evapotranspiration perform based on it obtained from both water balance equation and MODIS product. Since both precipitation product and run off validate by ground before the remain component evaporation used for validate against satellite-based evapotranspiration. With correlation coefficients (r) for Climate Hazards Group Infra-Red Precipitation with Station (CHIRPS, Precipitation Estimation from remotely sensed information using Artificial Neural Network Climate Data Record (PERSIANN -CDR), European Reanalysis Agriculture fifth generation (ERA AG _5) and European Reanalysis fifth generation (ERA _5) of (0.91, 0.87, 0.80, and 0.78), respectively, Northeast of upper Abbay Basin (NEUAB) were a good agreement. Furthermore, chirps have Probability of Detection (POD), False Alarm Rate (FAR) and Critical success Indices (CSI) scores of 0.9, 0.46, and 0.86, respectively. Thus, research summarized as seventeen years long term mean of Water Balance Components (WBC) in the Abbay basin precipitation, evapotranspiration, Run off and Terrestrial water storage (TWS) from Gravity Recovery and climate experiment (GRACE) 1936,696, 529, and 36 mm respectively. MOD16A2 evapotranspiration products can show good performance in each sub basins. This research recommends that propagating errors across each component in the water budget equation, it was possible to estimate the relative uncertainty of evapotranspiration. Keywords: Satellite Product, Water Balance Component, GRACE | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | Civil and Water Resources Engineering | en_US |
| dc.title | EVALUETING THE WATER BALANCE COMPONENTS BY INTEGRATING SATELLITE AND GROUND BASED OBSERVATION DATA IN THE ABBAY BASIN, ETHIOPIA | en_US |
| dc.type | Thesis | en_US |
