A Semi-Distributed Hydrological Model Using Rainfall Estimates by Radar. Application to Mediterranean Basins
- 作者：Corral ; C. ; Sempere-Torres ; D. ; Revilla ; M. ; Berenguer ; M
- 刊名：Physics and Chemistry of the Earth ; Part B ; Hydrology ; Oceans and Atmosphere
- 出版年：2000
- 期刊代码：71_14641909
- 类别：ear
- 出版时间：2000
- 卷：25
- 期：1
- 页码：1133-1136
- 文件大小：338 K
摘要
A semi-distributed rainfall-runoff model is proposed. This model is able to use distributed rainfall fields, particularly from weather radar, and it is thought to be adapted to hydrological characteristics of Mediterranean basins. The catchment is split into hydrological cells of 1 × 1 km2, and TOPMODEL is applied at this cell scale, as runoff generation procedure. Afterwards, effective rainfall is routed to the basin outlet, using a cell unit hydrograph which depends on the properties of the travel path. Each cell pathway is divided into hillslope path (slow response)and river path (fast response). Finally, all the cell runoffs are added, getting the total runoff. A case study in the Ample basin is presented. A calibration-validation process has been carried out over a set of events, and some results are shown. A comparison against a lumped version of TOPMODEL (using spatially uniform rainfall) is also made. Results show that in general the proposed version can provide better flow reconstitutions, allowing the integration of radar data into distributed hydrological modelling.