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Titolo:
Toward improved streamflow forecasts: Value of semidistributed modeling
Autore:
Boyle, DP; Gupta, HV; Sorooshian, S; Koren, V; Zhang, ZY; Smith, M;
Indirizzi:
Univ Arizona, Dept Hydrol & Water Resources, Tucson, AZ 85721 USA Univ Arizona Tucson AZ USA 85721 & Water Resources, Tucson, AZ 85721 USA NOAA, Natl Weather Serv, Hydrol Lab, Off Hydrol Dev, Silver Spring, MD 20910 USA NOAA Silver Spring MD USA 20910 f Hydrol Dev, Silver Spring, MD 20910 USA
Titolo Testata:
WATER RESOURCES RESEARCH
fascicolo: 11, volume: 37, anno: 2001,
pagine: 2749 - 2759
SICI:
0043-1397(200111)37:11<2749:TISFVO>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
HYDROLOGIC-MODELS; IMPROVED CALIBRATION; RUNOFF MODEL; RAINFALL; SENSITIVITY; SYSTEM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Engineering, Computing & Technology
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Boyle, DP Univ & Community Coll Syst Nevada, Desert Res Inst, Reno, NV USAUniv & Community Coll Syst Nevada Reno NV USA st, Reno, NV USA
Citazione:
D.P. Boyle et al., "Toward improved streamflow forecasts: Value of semidistributed modeling", WATER RES R, 37(11), 2001, pp. 2749-2759

Abstract

The focus of this study is to assess the performance improvements of semidistributed applications of the U.S. National Weather Service Sacramento Soil Moisture Accounting model on a watershed using radar-based remotely sensed. precipitation data. Specifically, performance comparisons are made within an automated multicriteria calibration framework to evaluate the benefit of "spatial distribution" of the model input (precipitation), structural components (soil moisture and streamflow routing computations), and surface characteristics (parameters). A comparison of these results is made with those obtained through manual calibration. Results indicate that for the studywatershed, there are performance improvements associated with semidistributed model applications when the watershed is partitioned into three subwatersheds; however, no additional benefit is gained from increasing the numberof subwatersheds from three to eight. Improvements in model performance are demonstrably related to the spatial distribution of the model input arid streamflow routing. Surprisingly, there is no improvement associated with the distribution of the surface characteristics (model parameters).

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Documento generato il 29/11/20 alle ore 23:32:15