The DRIHM Project: A Flexible Approach to Integrate HPC, Grid and Cloud Resources for Hydro-Meteorological Research. - Daniele D'Agostino; Andrea Clematis; Antonella Galizia; Alfonso Quarati; Emanuele Danovaro; Luca Roverelli; Gabriele Zereik; Dieter Kranzlmüller; Michael Schiffers; Nils gentschen Felde; Christian Straube; Olivier Caumont; et al. (SC, 2014)