Simulation of runoff for the Black Volta Basin using satellite observation data

Autor: Edward Matthew Osei Jnr, Kwaku Amaning Adjei, F. O. Annor, Samuel Nii Odai, Salamatu Shaibu
Rok vydání: 2012
Předmět:
Zdroj: International Journal of River Basin Management. 10:245-254
ISSN: 1814-2060
1571-5124
DOI: 10.1080/15715124.2012.679735
Popis: 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 somet...
Databáze: OpenAIRE
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