Improving the basis for validation of large scale distributed hydrological models using a remotely sensed dryness index

J. Andersen, K.H. Jensen, I. Sandholt, J.C. Refsgaard

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingspeer-review

1 Citation (Scopus)

Abstract

A spatially distributed hydrological model, based on the MIKE-SHE code, has been constructed for the 375 000 km2 Senegal River basin in West Africa (Andersen et al., 2001). Calibration and validation results suggest that the spatial resolution of the input data in parts of the area has not been sufficient for satisfactory modelling performance. In order to improve the model results, especially the spatial output, a remotely sensed dryness index (Sandholt et al., 2001) has been visually examined for its relation to model soil moisture for two consecutive days in the wet season of 1990. The visual comparison showed the expected consistency in both root zone soil moisture and dryness index between the two days. An examination of the spatial patterns in model input and output variables revealed the input of precipitation zones to be highly dominating on the pattern of the output variables.

Original languageEnglish
Title of host publicationRemote Sensing and Hydrology 2000
Subtitle of host publicationA selection of papers presented at the Conference on Remote Sensing and Hydrology 2000, held at Santa Fe, New Mexico, USA, April 2000
EditorsManfred Owe, Kaye Brubaker, Jerry Ritchie, Albert Rango
PublisherInternational Association of Hydrological Sciences
Pages589-591
Number of pages3
ISBN (Print)1-901502-46-5
Publication statusPublished - 2000
Externally publishedYes
EventConference on Remote Sensing and Hydrology 2000 - Santa Fe, United States
Duration: 2 Apr 20007 Apr 2000

Publication series

SeriesIAHS Publication
Volume267
ISSN0144-7815

Conference

ConferenceConference on Remote Sensing and Hydrology 2000
Country/TerritoryUnited States
CitySanta Fe
Period2/04/007/04/00

Keywords

  • Distributed hydrological modelling
  • Soil moisture

Programme Area

  • Programme Area 2: Water Resources

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