TY - JOUR
T1 - Distributed hydrological modelling of the Senegal River Basin - Model construction and validation
AU - Andersen, Jens
AU - Refsgaard, Jens C.
AU - Jensen, Karsten H.
N1 - Funding Information:
This study was carried out within the framework of the ‘Earth Observation Programme’ funded by the Danish research councils, grant no. 9600668. Meteorological data were kindly made available by the national meteorological institutions in Senegal, Mauritania, Mali and Guinea, and hydrological data by OMVS and ORSTOM, Senegal. The members of the INTEO project group are acknowledged for contributions to the study. We acknowledge the reviewers for valuable and constructive comments and suggestions.
PY - 2001/7/2
Y1 - 2001/7/2
N2 - A modified version of the physically-based distributed MIKE SHE model code was applied to the 375,000 km2 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 × 4 km2 to a large extent reflects field conditions at a scale smaller than subcatchment scale, this could not be validated due to lack of spatial data.
AB - A modified version of the physically-based distributed MIKE SHE model code was applied to the 375,000 km2 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 × 4 km2 to a large extent reflects field conditions at a scale smaller than subcatchment scale, this could not be validated due to lack of spatial data.
KW - Distributed hydrological modelling
KW - Large scale
KW - Validation
UR - http://www.scopus.com/inward/record.url?scp=0035796537&partnerID=8YFLogxK
U2 - 10.1016/S0022-1694(01)00384-5
DO - 10.1016/S0022-1694(01)00384-5
M3 - Article
AN - SCOPUS:0035796537
SN - 0022-1694
VL - 247
SP - 200
EP - 214
JO - Journal of Hydrology
JF - Journal of Hydrology
IS - 3-4
ER -