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• W1980430798 abstract "Streamflow forecasts are updated periodically in real time, thereby facilitating forecast evolution. This study proposes a forecast-skill-based model of forecast evolution that is able to simulate dynamically updated streamflow forecasts. The proposed model applies stochastic models that deal with streamflow variability to generate streamflow scenarios, which represent cases without forecast skill of future streamflow. The model then employs a coefficient of prediction to determine forecast skill and to quantify the streamflow variability ratio explained by the forecast. By updating the coefficients of prediction periodically, the model efficiently captures the evolution of streamflow forecast. Simulated forecast uncertainty increases with increasing lead time; and simulated uncertainty during a specific future period decreases over time. We combine the statistical model with an optimization model and design a hypothetical case study of reservoir operation. The results indicate the significance of forecast skill in forecast-based reservoir operation. Shortage index reduces as forecast skill increases and ensemble forecast outperforms deterministic forecast at a similar forecast skill level. Moreover, an effective forecast horizon exists beyond which more forecast information does not contribute to reservoir operation and higher forecast skill results in longer effective forecast horizon. The results illustrate that the statistical model is efficient in simulating forecast evolution and facilitates analysis of forecast-based decision making." @default.
• W1980430798 created "2016-06-24" @default.
• W1980430798 creator A5031092849 @default.
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• W1980430798 date "2014-09-01" @default.
• W1980430798 modified "2023-09-27" @default.
• W1980430798 title "Forecast-skill-based simulation of streamflow forecasts" @default.
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• W1980430798 doi "https://doi.org/10.1016/j.advwatres.2014.05.011" @default.
• W1980430798 hasPublicationYear "2014" @default.
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