| Volumes and Issues Contents of Issue 1 |
www.hydrol-earth-syst-sci.net/13/27/2009/
doi:10.5194/hess-13-27-2009
© Author(s) 2009. This work is distributed
under the Creative Commons Attribution 3.0 License.
Simulating typhoon-induced storm hydrographs in subtropical mountainous watershed: an integrated 3-layer TOPMODEL
1Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan
2Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan
3State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China
Abstract. A three-layer TOPMODEL is constructed by integrating diffusion wave approach into surface flow, soil moisture deficit into inter flow and exponential recession curve function into base flow. A subtropical mountainous watershed, Heng-Chi, and 22 rain storms with various rainfall types and wide ranges of total rainfall (from 81 to 1026 mm) were applied. The global best-fitted parameter set gives an average efficient coefficient of 82% for calibration and 80% for validation. Sensitivity analysis reveals that soil transmissivity dominates the discharge volume and recession coefficient dominates the hydrograph shape in TOPMODEL framework. Over 90% observed discharges of validation events falls within the 90% confidence interval derived form calibration events. The resembling performances between calibration and validation as well as good results of the confidence interval demonstrate the capability of 3-layer TOPMODEL on simulating cyclones with various rainfall intensity and pattern in subtropical watershed. Meanwhile, the upper confidence limit is suggested preferably when considering flood assessment.
Final Revised Paper (PDF, 1825 KB) Discussion Paper (HESSD)
Citation: Huang, J.-C., Lee, T.-Y., and Kao, S.-J.: Simulating typhoon-induced storm hydrographs in subtropical mountainous watershed: an integrated 3-layer TOPMODEL, Hydrol. Earth Syst. Sci., 13, 27-40, doi:10.5194/hess-13-27-2009, 2009. Bibtex EndNote Reference Manager XML
