| Title: | Formulation of a hybrid calibration approach for a physically based distributed model with NEXRAD data input |
| Authors: | Di Luzio, M. and J.G. Arnold |
| Year: | 2004 |
| Journal: | Journal of Hydrology |
| Volume (Issue): | 298(1-4) |
| Pages: | 136-154 |
| Article ID: | |
| DOI: | 10.1016/j.jhydrol.2004.03.034 |
| URL (non-DOI journals): | |
| Model: | SWAT |
| Broad Application Category: | hydrologic only |
| Primary Application Category: | Green-Ampt and sub-daily processes |
| Secondary Application Category: | calibration, sensitivity, and/or uncertainty analysis |
| Watershed Description: | 1233 km^2 Blue River, located in southern Oklahoma, U.S. |
| Calibration Summary: | 24 events during 1994 to 2000: manual calibration: E = -102.5 to .9 & r2 = .01 to .98 ( 18 > .60) auto. Calibration: E = .15 to .99 (22>.66) & r2 = .24 to .99 (22>.73) |
| Validation Summary: | |
| General Comments: | Two calibration approaches, manual & automatic (Shuffled Complex Evaluation Method) were compared using NEXRAD precipitation data (4 x 4 km^2 grid) and the Green-Ampt infiltration routine (sub-daily time step) for 24 storm events. The simulations were anchored in previous annual flow comparisons for 4 watersheds. The model was calibrated for each event comparison. The results were found to greatly improve using automatic calibration. |
| Language: | English |
| Keywords: | Simulation; Pollution; GIS; Non-point source |