000029387 001__ 29387
000029387 041__ $$aEnglish
000029387 100__ $$aKonz, M.
000029387 245__ $$aImplementation of a Process-Based Catchment Model in a Poorly Gauged, Highly Glacierized Himalayan Headwater
000029387 269__ $$cMarch 2014
000029387 260__ $$c2007
000029387 300__ $$a1323-1339
000029387 511__ $$aCrysparticle
000029387 511__ $$aCrysparticle
000029387 520__ $$aThe paper presents a catchment modeling approach for remote glacierized Himalayan catchments. The distributed catchment model TACD, which is widely based on the HBV model, was further developed for the application in highly glacierized catchments on a daily timestep and applied to the Nepalese Himalayan headwater Langtang Khola (360 km2). Low laying reference stations are taken for temperature extrapolation applying a second order polynomial function. Probability based statistical methods enable bridging data gaps in daily precipitation time series and the redistribution of cumulated precipitation sums over the previous days. Snow and ice melt was calculated in a distributed way based on the temperature-index method employing calculated daily potential sunshine durations. Different melting conditions of snow and ice and melting of ice under debris layers were considered. The spatial delineation of hydrological response units was achieved by taking topographic and physiographic information from maps and satellite images into account, and enabled to incorporate process knowledge into the model. Simulation results demonstrated that the model is able to simulate daily discharge for a period of 10 years and point glacier mass balances observed in the research area with an adequate reliability. The simple but robust data pre-processing and modeling approach enables the determination of the components of the water balance of a remote, data scarce catchment with a minimum of input data.
000029387 650__ $$aGlaciers
000029387 700__ $$aUhlenbrook, S.
000029387 700__ $$aBraun, L.
000029387 700__ $$aShrestha, A.
000029387 700__ $$aDemuth, S.
000029387 773__ $$pHydrology and Earth System Sciences
000029387 773__ $$v11 (4)
000029387 773__ $$a10.5194/hess-11-1323-2007
000029387 8564_ $$uhttp://www.hydrol-earth-syst-sci.net/11/1323/2007/hess-11-1323-2007.html$$ySource link (opan access)
000029387 980__ $$aARTICLE