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Titolo:
COMPARISON OF SIMPLE VERSUS COMPLEX DISTRIBUTED RUNOFF MODELS ON A MIDSIZED SEMIARID WATERSHED
Autore:
MICHAUD J; SOROOSHIAN S;
Indirizzi:
UNIV ARIZONA,DEPT HYDROL & WATER RESOURCES TUCSON AZ 85721 UNIV ARIZONA,DEPT HYDROL TUCSON AZ 85721 UNIV ARIZONA,DEPT SYST ENGN TUCSON AZ 85721
Titolo Testata:
Water resources research
fascicolo: 3, volume: 30, anno: 1994,
pagine: 593 - 605
SICI:
0043-1397(1994)30:3<593:COSVCD>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
SYSTEME-HYDROLOGIQUE-EUROPEEN; WARNING SYSTEMS; RAINFALL; FUTURE; CATCHMENTS; INFORMATION; SIMULATIONS; DESIGN; IMPACT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
54
Recensione:
Indirizzi per estratti:
Citazione:
J. Michaud e S. Sorooshian, "COMPARISON OF SIMPLE VERSUS COMPLEX DISTRIBUTED RUNOFF MODELS ON A MIDSIZED SEMIARID WATERSHED", Water resources research, 30(3), 1994, pp. 593-605

Abstract

The increasing availability of distributed rainfall data and computational resources is providing the opportunity to use distributed modelsfor rainfall-runoff forecasting or other applications. This paper compares the accuracy of simulations from a complex distributed model (KINEROS), a simple distributed model (based on the Soil Conservation Service (SCS) method), and a simple lumped model (SCS method). The 150 km2, semiarid Walnut Gulch experimental watershed was the test site; models were validated using 24 severe thunderstorms and rain gauge densities similar to those found at flash flood warning sites (one gauge per20 km2). Under these circumstances, none of the models were able to accurately simulate peak flows or runoff volumes from individual events. Models showed somewhat more skill in predicting time to peak and theratio of peak flow to volume. When calibration was performed, the accuracy of the complex distributed model was similar to that of the simple distributed model. Without calibration, the complex distributed model was more accurate than the simple distributed model. The spatially lumped model performed very poorly. The complex distributed model was validated under real-time forecasting conditions; forecasts based on observed rainfall had lead times of 30-75 min.

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Documento generato il 03/12/20 alle ore 21:56:02