 |
| Titel |
Implementation of a process-based catchment model in a poorly gauged, highly glacierized Himalayan headwater |
| VerfasserIn |
M. Konz, S. Uhlenbrook, L. Braun, A. Shrestha, S. Demuth |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1027-5606
|
| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 11, no. 4 ; Nr. 11, no. 4 (2007-05-15), S.1323-1339 |
| Datensatznummer |
250009388
|
| Publikation (Nr.) |
 copernicus.org/hess-11-1323-2007.pdf |
|
|
|
|
|
| Zusammenfassung |
| The paper presents a catchment modeling approach for remote glacierized
Himalayan catchments. The distributed catchment model TACD, which is
widely based on the HBV model, was further developed for the application in
highly glacierized catchments on a daily timestep and applied to the
Nepalese Himalayan headwater Langtang Khola (360 km2). Low laying
reference stations are taken for temperature extrapolation applying a second
order polynomial function. Probability based statistical methods enable
bridging data gaps in daily precipitation time series and the redistribution
of cumulated precipitation sums over the previous days. Snow and ice melt
was calculated in a distributed way based on the temperature-index method
employing calculated daily potential sunshine durations. Different melting
conditions of snow and ice and melting of ice under debris layers were
considered. The spatial delineation of hydrological response units was
achieved by taking topographic and physiographic information from maps and
satellite images into account, and enabled to incorporate process knowledge
into the model. Simulation results demonstrated that the model is able to
simulate daily discharge for a period of 10 years and point glacier mass
balances observed in the research area with an adequate reliability. The
simple but robust data pre-processing and modeling approach enables the
determination of the components of the water balance of a remote, data
scarce catchment with a minimum of input data. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|