Sensitivity of urban drainage models to the spatial-temporal resolution of rainfall inputs

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Sensitivity of urban drainage models to the spatial-temporal resolution of rainfall inputs

A multi-storm, multi-catchment investigation

Abstract (2015)

Author(s)

S. Ochoa-Rodriguez (Imperial College London)

L. P. Wang (Katholieke Universiteit Leuven)

A. Gires (UPE)

R. Reinoso Rondinel (TU Delft - Civil Engineering & Geosciences)

R. D. Pina (Imperial College London)

J. Van Assel (Aquafin NV)

S. Kroll (Aquafin NV)

D. Murlà-Tuyls (Katholieke Universiteit Leuven)

G. Bruni (TU Delft - Civil Engineering & Geosciences)

A. Ichiba (UPE)

S. Gaitan (TU Delft - Civil Engineering & Geosciences)

E. Cristiano (TU Delft - Civil Engineering & Geosciences)

D. Schertzer (UPE)

I. Tchiguirin-Skaia (UPE)

C. Onof (Imperial College London)

P. Willems (Katholieke Universiteit Leuven)

J. A.E. Ten Veldhuis (TU Delft - Civil Engineering & Geosciences)

Research Group

Atmospheric Remote Sensing

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Publication Year

2015

Language

English

Research Group

Atmospheric Remote Sensing

Event

10th International Workshop on Precipitation in Urban Areas: Rainfall in Urban and Natural Systems, UrbanRain 2015 (2015-12-01 - 2015-12-05), Pontresina, Switzerland

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Abstract

Urban hydrological applications require high resolution precipitation and catchment information in order to well represent the spatial variability, fast runoff processes and short response times of urban catchments (Berne et al., 2004). Although fast progress has been made over the last few decades in high resolution measurement of rainfall at urban scales, including increasing use of weather radars, recent studies suggest that the resolution of the currently available rainfall estimates (typically 1 × 1 km² in space and 5 min in time) may still be too coarse to meet the stringent requirements of urban hydrology (Gires et al., 2012). What is more, current evidence is still insufficient to provide a concrete answer regarding the added value of higher resolution rainfall estimates and actual rainfall input resolution requirements for urban hydrological applications. With the aim of providing further evidence in this regard, a collaborative study was conducted which investigated the impact of rainfall input resolutions on the outputs of the operational urban drainage models of four urban catchments in the UK and Belgium (Figure 1).

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