Distributed hydrological modelling of the Senegal river basin - model construction and validation

J. Andersen, J.C. Refsgaard, Karsten Høgh Jensen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A modified version of the physically-based distributed MIKE SHE model code was applied to the 375,000 km(2) Senegal River Basin. On the basis of conventional data from meteorological stations and readily accessible databases on topography, soil types, vegetation type, etc. three models with different levels of calibration were constructed and rigorous validation tests conducted. Calibration against one station and internal validation against eight additional stations revealed significant shortcomings for some of the upstream tributaries, particularly in the semi-arid zone of the river basin. Further calibration against additional discharge stations improved the performance levels of the validation for the different subcatchments. Although there may be good reasons to believe that the model operating on a model grid of 4 x 4 km(2) to a large extent reflects held conditions at a scale smaller than subcatchment scale, this could not be validated due to lack of spatial data. (C) 2001 Elsevier Science B.V. All rights reserved.
    Original languageEnglish
    JournalJournal of Hydrology
    Volume247
    Issue number3-4
    Pages (from-to)200-214
    ISSN0022-1694
    DOIs
    Publication statusPublished - 2001

    Keywords

    • validation
    • distributed hydrological modelling
    • large scale

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