Center of Excellence, University of L’Aquila (UNIAQ), Italy
UNIAQ - CETEMPS Center of Excellence – University of L’Aquila
The University of L’Aquila has developed a land surface hydrological model, called CHyM (CETEMPS Hydrological Model) (Coppola et al., 2007, Tomassetti et al., 2005). This is a grid based, physical hydrological model that can be used to characterized hydrologic basin for any domain with a space resolution depending on the digital elevation model (DEM) available for the region. CHyM explicitly solves the continuity and momentum equations to predict the surface runoff, while the Thornthwaite formula (Thornthwaite and Mather, 1957) is used to calculate the evapotranspiration term. A simplified two-reservoir scheme is used to simulate the infiltration process. The contribution of WP2.2.1 to the ACQWA project will be to undertake hydrological model simulations and to implement processes in the CHyM model that are important for alpine river runoff, e.g., snow-pack formation and melting. In its current implementation, CHyM is able to acquire rainfall observations and predictions from different models and data bases. CHyM rebuilds on the assigned grid the rainfall field at an hourly time-scale using the different available data set at different time steps. The use of CHyM, coupled with all available sources of rainfall data (e.g., RCM output, cryosphere model output, etc.) will enable an assessment of the change in runoff and water availability in several selected geographical domains. The CHyM model has also been used for landslide prediction and has been tested for the past events in Central Italy where the records of landslides are available. All these characteristics make CHyM suitable for studies assessing the climatic change effects on the frequency and severity of floods and on increasing of landslides events (see WP3.1 and WP3.2).
In collaboration with ICTP, output from the RegCM simulations completed as part of WP2.1.2 will be used to assess changes in the hydrology of different mountain regions, with particular emphasis on river runoff and water availability. In the first phase Alpine basins (e.g. the Po and Rhone rivers) will be investigated while in the following phase the simulations will be extended to other selected non-European Regions.
Marco Verdecchia received the Laurea degree in Physics from the University of L’Aquila. He has been several times at CERN, Geneva (CH) as a visiting scientist between 1992 and 1996. Since 2000 he is a researcher of the Physics Dept. of the University of L’Aquila, Italy. In 2002 he also joined the CETEMPS centre of excellence of the University of L’Aquila. His current research involves remote sensing of precipitation from satellites, development of inversion methods neural network based and hydrological modelling and implementation. His main area of interest is the applications of biological algorithms in numerical modelling of complex physics system. In the last years he was involved in the development of a distributed hydrological model and mainly on the parameterization of different physical processes contributing to hydrological scale.
Barbara Tomassetti received the Laurea degree in Physics from the University of L’Aquila, and the Ph.D degree in Physics from the University of L’Aquila, Italy. Since 2002 she joined the CETEMPS centre of excellence of the University of L’Aquila. She is involved in the hydrological model research activity and development going on in the CETEMPS hydrological model group. Her current research involves the development of inversion methods neural network based, hydrological modelling and hydro meteorological effects of land use change at regional scale. In the last years she was involved in the development of a distributed hydrological model and mainly in the coupling of CHyM model with meteorological and climatic models (MM5 and RegCM). The coupling of different models leads to the possibility of investigating the hydrological effects induced by the melting of glaciers area in the Alpine Region.