Propagation of uncertainty from observing systems and NWP into hydrological models : COST-731 Working Group 2

The COST-731 action is focused on uncertainty propagation in hydro-meteorological forecasting chains. Goals and activities of the action Working Group 2 are presented. Five foci for discussion and research have been identified: a) Understand uncertainties, b) Exploring, designing and comparing methodologies for the use of uncertainty in hydrological models, c) Providing feedback on sensitivity to data and forecast providers, d) Transferring methodologies among the different communities involved. e) Setting up test-beds and perform proof-of-concepts. Current examples of different perspectives on uncertainty propagation are presented.