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

Publikation: Bidrag til bog/rapport/konferenceproceedingsKonferenceartikel i proceedingspeer review

1 Citationer (Scopus)

Abstrakt

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.

OriginalsprogEngelsk
TitelRemote Sensing and Hydrology 2000
UndertitelA selection of papers presented at the Conference on Remote Sensing and Hydrology 2000, held at Santa Fe, New Mexico, USA, April 2000
RedaktørerManfred Owe, Kaye Brubaker, Jerry Ritchie, Albert Rango
ForlagInternational Association of Hydrological Sciences
Sider589-591
Antal sider3
ISBN (Trykt)1-901502-46-5
StatusUdgivet - 2000
Udgivet eksterntJa
BegivenhedConference on Remote Sensing and Hydrology 2000 - Santa Fe, USA
Varighed: 2 apr. 20007 apr. 2000

Publikationsserier

NavnIAHS Publication
Vol/bind267
ISSN (Trykt)0144-7815

Konference

KonferenceConference on Remote Sensing and Hydrology 2000
Land/OmrådeUSA
BySanta Fe
Periode2/04/007/04/00

Programområde

  • Programområde 2: Vandressourcer

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