Toward improved streamflow forecasts: Value of semidistributed modeling

Douglas P. Boyle, Hoshin Vijai Gupta, Soroosh Sorooshian, Victor Koren, Ziya Zhang, Michael Smith

Research output: Contribution to journalArticle

167 Citations (Scopus)

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 study watershed, 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 number of subwatersheds from three to eight. Improvements in model performance are demonstrably related to the spatial distribution of the model input and streamflow routing. Surprisingly, there is no improvement associated with the distribution of the surface characteristics (model parameters).

Original languageEnglish (US)
Pages (from-to)2749-2759
Number of pages11
JournalWater Resources Research
Volume37
Issue number11
DOIs
StatePublished - 2001

Fingerprint

stream flow
streamflow
subwatersheds
Watersheds
modeling
Soil moisture
watershed
Sacramento Soil Moisture Accounting Model
routing
calibration
Spatial distribution
spatial distribution
soil moisture
Calibration
radar
structural component
weather
forecast
soil water
Radar

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Aquatic Science
  • Water Science and Technology

Cite this

Toward improved streamflow forecasts : Value of semidistributed modeling. / Boyle, Douglas P.; Gupta, Hoshin Vijai; Sorooshian, Soroosh; Koren, Victor; Zhang, Ziya; Smith, Michael.

In: Water Resources Research, Vol. 37, No. 11, 2001, p. 2749-2759.

Research output: Contribution to journalArticle

Boyle, DP, Gupta, HV, Sorooshian, S, Koren, V, Zhang, Z & Smith, M 2001, 'Toward improved streamflow forecasts: Value of semidistributed modeling', Water Resources Research, vol. 37, no. 11, pp. 2749-2759. https://doi.org/10.1029/2000WR000207
Boyle, Douglas P. ; Gupta, Hoshin Vijai ; Sorooshian, Soroosh ; Koren, Victor ; Zhang, Ziya ; Smith, Michael. / Toward improved streamflow forecasts : Value of semidistributed modeling. In: Water Resources Research. 2001 ; Vol. 37, No. 11. pp. 2749-2759.
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