Setting up a hydrological model of Alberta: Data discrimination analyses prior to calibration
| Autor: | Karim C. Abbaspour, Monireh Faramarzi, Alexander J.B. Zehnder, Greg G. Goss, Majid Iravani, Kevin D. Bladon, Raghavan Srinivasan |
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| Rok vydání: | 2015 |
| Předmět: |
Structure (mathematical logic)
Environmental Engineering Soil and Water Assessment Tool Computer science Calibration (statistics) Ecological Modeling media_common.quotation_subject Data discrimination computer.software_genre Data type Double mass analysis Conceptual model Data mining Representation (mathematics) computer Software media_common |
| Zdroj: | Environmental Modelling & Software. 74:48-65 |
| ISSN: | 1364-8152 |
| Popis: | Failure to setup a large-scale hydrological model correctly may not allow proper calibration and uncertainty analyses, leading to inaccurate model prediction. To build a model with accurate accounting of hydrological processes, a data discrimination procedure was applied in this study. The framework uses a hydrological model of Alberta built with the Soil and Water Assessment Tool (SWAT) program. The model was used to quantify the causes and extents of biases in predictions due to different types of input data. Data types represented different sources of errors, including input data (e.g., climate), conceptual model (e.g., potholes, glaciers), and control structure (e.g., reservoirs, dams). The results showed that accounting for these measures leads to a better physical accounting of hydrological processes, significantly improving the overall model performance. The procedure used in this study helps to avoid unnecessary and arbitrary adjustment of parameters to compensate for the errors in the model structure. The Soil and Water Assessment Tool was used to setup a hydrological model of Alberta.A data discrimination procedure was developed to test the accuracy of the model.Various data representing diverse hydro-climatic, geo-spatial conditions were tested.An accurate representation of the processes will avoid improper model calibration. |
| Databáze: | OpenAIRE |
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