期刊
JOURNAL OF HYDROLOGY
卷 610, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhydrol.2022.127866
关键词
Continuous hydrologic modelling; Risk assessment; Small and ungauged basins; Rainfall models; Rainfall simulations
资金
- Italian Ministry of Education, University and Research (MIUR)
Continuous hydrologic modelling is an important approach in modern hydrology that improves the rainfall-runoff transformation and provides effective hydrological output information for risk assessment. However, the choice of the most appropriate rainfall simulation model for risk analysis has not been sufficiently investigated. This paper tests eight rainfall models and evaluates their performances when used as input for a simplified continuous rainfall-runoff model, providing insights for improving and tailoring the models for data-scarce hydrological risk applications.
Continuous hydrologic modelling is a natural evolution of the event-based design approach in modern hydrology. It improves the rainfall-runoff transformation and provides the practitioner with more effective hydrological output information for risk assessment. However, this approach is still not widely adopted, mainly because the choice of the most appropriate rainfall simulation model (which is the core of continuous frameworks) for the specific aim of risk analysis has not been sufficiently investigated. In this paper, we test eight rainfall models by evaluating the performances of the simulated rainfall time series when used as input for a simplified continuous rainfall-runoff model, the COSMO4SUB, which is particularly designed for small and ungauged basins. The comparison confirms the capability of all models to provide realistic flood events and allows identifying the models to be further improved and tailored for data-scarce hydrological risk applications. The suggested framework is transferable to any catchment while different hydrologic and rainfall models can be used.
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