Article ID Journal Published Year Pages File Type
4435101 Journal of Hydrology: Regional Studies 2015 19 Pages PDF
Abstract

Study regionSelected countries in southern Africa.Study focusThe study uses a combination of a monthly rainfall-runoff model and a daily rainfall based disaggregation method to simulate daily flows. The two models were forced with different rainfall data (local and global) and the results examined to determine the major reasons for modelling success or failure.New hydrological insights for the regionThere are substantial regional differences in the success of the monthly hydrological model, which inevitably affects the success of the daily disaggregation results. There are also regional differences in the success of using global rainfall data sets (Climatic Research Unit (CRU) datasets for monthly, National Oceanic and Atmospheric Administration African Rainfall Climatology, version 2 (ARC2) satellite data for daily). The overall conclusion is that the disaggregation method presents a parsimonious approach to generating daily flow simulations from existing monthly simulations and that these daily flows are likely to be useful for some purposes (e.g. water quality modelling), but less so for others (e.g. peak flow analysis).

Related Topics
Physical Sciences and Engineering Earth and Planetary Sciences Earth-Surface Processes
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