| Titre : | Simulation of runoff for the black volta basin using satellite observation data (2012) |
| Auteurs : | Salamatu Shaibu, Auteur ; Nii Odai, Samuel, Auteur ; Kwaku Amaning Adjei, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | JRBM : International journal of river basin management (Vol. 10 N° 3, Juillet 2012) |
| Article en page(s) : | pp. 245-254 |
| Note générale : | Hydraulique |
| Langues : | Anglais |
| Tags : | Black Volta Basin TRMM-based rainfall Rainfall-runoff simulation Satellite observation science |
| Résumé : | Daily tropical rainfall measuring mission (TRMM)-based rainfall and Landsat-derived land-cover maps were used to retrospectively simulate runoff for the Black Volta Basin. This was to ascertain the usefulness of the increasingly available satellite observation data to augment ground-measured hydrometeorological data for unguaged basins or basins with inadequate data. Both visual and statistical comparison of TRMM-based rainfall with the gauged rainfall indicates that the monthly rainfall data are statistically comparable. Seasonal upward adjustment of the monthly TRMM-based rainfall improved the rainfall correlation giving a Nash–Sutcliffe model efficiency of the simulated runoff of 89.5%. Thus, monthly TRMM-based rainfall estimate can be used to augment existing ground-measured rainfall data and together with Landsat-derived land-cover maps be used to estimate runoff for unguaged basins in the West African sub-region. The study is useful for Sub-Saharan Africa, where sustainable water management is sometimes hampered due to the absence of reliable and consistent data. |
| ISSN : | 1571-5124 |
| En ligne : | http://www.tandfonline.com/doi/full/10.1080/15715124.2012.679735 |
