The EGI-DRIHM collaboration: how the european grid and cloud infrastructures can support hydro-meteorology research

Hydro-meteorological forecasts rely on the execution of complex, computationally intensive, simulation models. A full simulation - from rainfall to impact on urban areas - requires the execution of several models organized through workflows, whose accuracy is strongly dependent on an extensive set of configuration parameters. The DRIHM project aims at setting the stage for a new way of doing Hydro- Meteorological Research (HMR). In particular, the goal is the development of a science gateway that allows users, from scientists to environmental agencies and citizen scientists, to access and combine data and forecasting models using integrated services, user-friendly interfaces and resources from European - ad in perspective worldwide - infrastructures. Within this framework the EGI-DRIHM collaboration focuses on the integration of the HMR model selected in the project on the Grid and Clouds resources made available within the drihm.eu virtual organization. In this contribution we present such experience. The main focus is on the process of adapting HMR models for the deployment on an enabling Grid infrastructure that supports dynamic model chains.