In this study the simulations generated by two of the most widely used hydrological watershed-scale models, the Annualized Agricultural Non-Point Source (AnnAGNPS) and the Soil and Water Assessment Tool (SWAT), were compared in a Mediterranean watershed, the Carapelle, located in Apulia, Southern Italy. The input data required, time and effort devoted for input preparation, strength and weakness points of each model, ease of use and limitations, from a user point of view, were evaluated. Models were calibrated and validated for runoff and sediment load, using a daily measured dataset (from January 2007 to December 2011). Different statistical indices were used to evaluate the models performance. Both models generally showed fair to very good correlation between observed and simulated runoff and sediment load during calibration and validation processes. To improve the model performances in calibration and validation, the entire dataset was split in two periods, the dry (May to September) and the wet (October to April). For both models, better simulations were obtained during the wet period, with respect to the dry one. This could be due to the greater difficulties in simulating the low flow conditions that characterize Mediterranean temporary rivers during dry periods. In this study the simulations generated by two of the most widely used hydrological watershed-scale models, the Annualized Agricultural Non-Point Source (AnnAGNPS) and the Soil and Water Assessment Tool (SWAT), were compared in a Mediterranean watershed, the Carapelle, located in Apulia, Southern Italy. The input data required, time and effort devoted for input preparation, strength and weakness points of each model, ease of use and limitations, from a user point of view, were evaluated. Models were calibrated and validated for runoff and sediment load, using a daily measured dataset (from January 2007 to December 2011). Different statistical indices were used to evaluate the models performance. Both models generally showed fair to very good correlation between observed and simulated runoff and sediment load during calibration and validation processes. To improve the model performances in calibration and validation, the entire dataset was split in two periods, the dry (May to September) and the wet (October to April). For both models, better simulations were obtained during the wet period, with respect to the dry one. This could be due to the greater difficulties in simulating the low flow conditions that characterize Mediterranean temporary rivers during dry periods.
Comparison between SWAT and AnnAGNPS model simulations in a Mediterranean watershed
Abdelwahab O. M. M;Ricci G. F.;Gentile F.
2017-01-01
Abstract
In this study the simulations generated by two of the most widely used hydrological watershed-scale models, the Annualized Agricultural Non-Point Source (AnnAGNPS) and the Soil and Water Assessment Tool (SWAT), were compared in a Mediterranean watershed, the Carapelle, located in Apulia, Southern Italy. The input data required, time and effort devoted for input preparation, strength and weakness points of each model, ease of use and limitations, from a user point of view, were evaluated. Models were calibrated and validated for runoff and sediment load, using a daily measured dataset (from January 2007 to December 2011). Different statistical indices were used to evaluate the models performance. Both models generally showed fair to very good correlation between observed and simulated runoff and sediment load during calibration and validation processes. To improve the model performances in calibration and validation, the entire dataset was split in two periods, the dry (May to September) and the wet (October to April). For both models, better simulations were obtained during the wet period, with respect to the dry one. This could be due to the greater difficulties in simulating the low flow conditions that characterize Mediterranean temporary rivers during dry periods. In this study the simulations generated by two of the most widely used hydrological watershed-scale models, the Annualized Agricultural Non-Point Source (AnnAGNPS) and the Soil and Water Assessment Tool (SWAT), were compared in a Mediterranean watershed, the Carapelle, located in Apulia, Southern Italy. The input data required, time and effort devoted for input preparation, strength and weakness points of each model, ease of use and limitations, from a user point of view, were evaluated. Models were calibrated and validated for runoff and sediment load, using a daily measured dataset (from January 2007 to December 2011). Different statistical indices were used to evaluate the models performance. Both models generally showed fair to very good correlation between observed and simulated runoff and sediment load during calibration and validation processes. To improve the model performances in calibration and validation, the entire dataset was split in two periods, the dry (May to September) and the wet (October to April). For both models, better simulations were obtained during the wet period, with respect to the dry one. This could be due to the greater difficulties in simulating the low flow conditions that characterize Mediterranean temporary rivers during dry periods.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
