 |
| Titel |
Estimation of parameters in a distributed precipitation-runoff model for Norway |
| VerfasserIn |
S. Beldring, K. Engeland, L. A. Roald, N. R. Sælthun, A. Voksø |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 7, no. 3 ; Nr. 7, no. 3, S.304-316 |
| Datensatznummer |
250004633
|
| Publikation (Nr.) |
 copernicus.org/hess-7-304-2003.pdf |
|
|
|
|
|
| Zusammenfassung |
| A distributed version of the HBV-model using 1 km2 grid cells and
daily time step was used to simulate runoff from the entire land surface of Norway for the
period 1961-1990. The model was sensitive to changes in small scale properties of the land
surface and the climatic input data, through explicit representation of differences between
model elements, and by implicit consideration of sub-grid variations in moisture status. A
geographically transferable set of model parameters was determined by a multi-criteria
calibration strategy, which simultaneously minimised the residuals between model simulated
and observed runoff from 141 Norwegian catchments located in areas with different runoff
regimes and landscape characteristics. Model discretisation units with identical landscape
classification were assigned similar parameter values. Model performance was evaluated by
simulating discharge from 43 independent catchments. Finally, a river routing procedure
using a kinematic wave approximation to open channel flow was introduced in the model, and
discharges from three additional catchments were calculated and compared with observations.
The model was used to produce a map of average annual runoff for Norway for the period
1961-1990.
Keywords: distributed model, multi-criteria calibration, global parameters, ungauged
catchments. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|