ABSTRACT

ABSTRACT: Climate variability, climate change and the impact on hydrological extremes have been studied for Belgium.The analysis of the climate variability was based on amore than 100-year time series of 10-minute rainfall intensities at Uccle, Brussels. Also comparison was made with other hydro-climatic series of neighbouring regions inWestern Europe. Future climate change was studied based on a set of climate scenarios that were tailor-made for impact analysis on hydrological extremes in Belgium. They were based on an ensemble set of more than 50 global and regional climate model simulations and after statistical analysis, downscaling and intrinsic bias correction using an advanced quantile perturbation approach. The scenarios were applied for the analysis of various types of hydrological and related impacts in Belgium. These include impacts on river peak and low flows, river floods, surface water availability, groundwater, urban drainage, urban floods, coastal floods, vegetation and ecology, crop growth and agriculture, etc. This paper gives an overview.