Evaluation of the hydro-meteorological chain in Piemonte Region, north western Italy - analysis of two HYDROPTIMET test cases

摘要

The HYDROPTIMET Project, Interreg IIIB EU program, is developed in theframework of the prediction and prevention of natural hazards related tosevere hydro-meteorological events and aims to the optimisation ofHydro-Meteorological warning systems by the experimentation of new tools(such as numerical models) to be used operationally for risk assessment. Theobject of the research are the Mesoscale weather phenomena and the responseof watersheds with size ranging from 102 to 103 km2.Non-hydrostatic meteorological models are used to catch such phenomena at aregional level focusing on the Quantitative Precipitation Forecast (QPF).Furthermore hydrological Quantitative Discharge Forecast (QDF) are performedby the simulation of run-off generation and flood propagation in the mainrivers of the interested territory. In this way observed data and QPF areused, in a real-time configuration, for one-way forcing of the hydrologicalmodel that works operationally connected to the Piemonte Region AlertSystem. The main hydro-meteorological events that interested Piemonte Regionin the last years are studied, these are the HYDROPTIMET selected test casesof 14-18 November 2002 and 23-26 November 2002. The results obtained interms of QPF and QDF offer a sound basis to evaluate the sensitivity of thewhole hydro-meteorological chain to the uncertainties in the numericalsimulations. Different configurations of non-hydrostatic meteorologicalmodels are also analysed.