Title: Weather radar for urban hydrological applications, lessons learnt and research needs identified from 4 pilots in North-West Europe
Authors: ten Veldhuis, Marie-Claire ×
Ochoa-Rodriguez, Susana
Bruni, Guenda
Gires, Auguste
Van Assel, Johan
Wang, Lipen
Reinoso Rodinel, Ricardo
Kroll, Stefan
Schertzer, Daniel
Onof, Christian
Willems, Patrick #
Issue Date: Apr-2014
Publisher: ASCE-EWRI
Host Document: International Symposium on Weather Radar and Hydrology (WRaH) - Proceedings pages:1-10
Conference: International Symposium on Weather Radar and Hydrology (WRaH) location:Washington DC date:7-9 April 2014
Abstract: This study investigates the impact of rainfall estimates of different spatial resolutions on the hydraulic outputs of the models of four of the EU RainGain project’s pilot locations (the Cranbrook catchment (UK), the Herent catchment (Belgium), the Morée Sausset catchment (France) and the Kralingen District (The Netherlands)). Two storm events, one convective and one stratiform, measured by a polarimetric X-band radar located in Cabauw (The Netherlands) were selected for analysis. The original radar estimates, at 100 m and 1 min resolutions, were aggregated to a spatial resolution of 1000 m. These estimates were then applied to the high-resolution semi distributed hydraulic models of the four urban catchments, all of which have similar size (between 5 and 8 km2), but different morphological, hydrological and hydraulic characteristics. When doing so, methodologies for standardising rainfall inputs and making results comparable were implemented. The response of the different catchments to rainfall inputs of varying spatial resolution is analysed in the light of model configuration, catchment and storm characteristics. Rather surprisingly, the results show that for the two events under consideration the spatial resolution (i.e. 100 m vs 1000 m) of rainfall inputs does not have a significant influence on the outputs of urban drainage models. The present study will soon be extended to more storms as well as model structures and resolutions, with the final aim of identifying critical spatial-temporal resolutions for urban catchment modelling in relation to catchment and storm event characteristics.
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Hydraulics Section
× corresponding author
# (joint) last author

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