Sensitivity of urban drainage models to the spatial-temporal resolution of rainfall inputs: A multi-storm, multi-catchment investigation
Journal
10th International Workshop on Precipitation in Urban Areas, UrbanRain 2015
Date Issued
2015
Author(s)
Ochoa-Rodriguez S.
Wang L.-P.
Gires A.
Reinoso Rondinel R.
Pina R.D.
Van Assel J.
Kroll S.
Murl?-Tuyls D.
Bruni G.
Ichiba A.
Gaitan S.
Cristiano E.
Schertzer D.
Tchiguirin-Skaia I.
Onof C.
Willems P.
Ten Veldhuis J.A.E.
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). © 2015 Rainfall in Urban and Natural Systems - Proceedings of the 10th International Workshop on Precipitation in Urban Areas, UrbanRain 2015. All rights reserved.
Other Subjects
Catchments; Meteorological radar; Runoff; Catchment information; High-resolution measurements; Higher resolution; Rainfall estimates; Resolution requirements; Spatial variability; Stringent requirement; Urban drainage model; Rain
Publisher
ETH Zurich Research Collection
Type
conference paper