Space-time representativity of precipitation for rainfall-runoff modelling: experience from some case studies

This contribution discusses possibilities to improve the space-time representativity of precipitation for flood simulations based on some case studies. The spatial representativity of precipitation is considered using an example of the interpolation of hourly rainfall using multivariate geostatistics with additional information from weather radar, daily data and topography. A second example discusses the conditional spatial simulation of rainfall for flood simulation focusing on the uncertainty from precipitation input. Regarding the representativeness of precipitation in time, an example of the disaggregation of daily rainfall into hourly rainfall using a multiplicative random cascade model is presented. Another example deals with stochastic synthesis of hourly precipitation using a modem alternating renewal model.