Effect of spatiotemporal variation of rainfall on dissolved oxygen depletion in integrated catchment studies

Conference paper (2016)

Authors

A. Moreno Rodenas Sanitary Engineering - CEG
F. Cecinati University of Bristol
J.A.E. ten Veldhuis Water Resources - CEG
J.G. Langeveld Partners4UrbanWater, Sanitary Engineering - CEG
F.H.L.R. Clemens Sanitary Engineering - CEG , Deltares
Research Group
Sanitary Engineering (CEG) (TU Delft)
Copyright: © 2016 A. Moreno Rodenas, F. Cecinati, Marie-claire ten Veldhuis, J.G. Langeveld, F.H.L.R. Clemens
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Published Date

2016

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Water Management

Research Group

Sanitary Engineering

Abstract

This study addresses the effect of spatial and temporal resolution of rainfall fields on the performance of a simplified integrated catchment model for predicting dissolved oxygen concentrations in a river. For that purpose we propose a procedure to generate rainfall products with increasing spatial information at different time step accumulations (10’, 30’ and 60’) at the spatial support of lumped urban catchment systems. Using a rain gauge network and single-polarization C-Band Radar data we generate 4 rainfall products; 1) Homogeneous rainfall from a single rain gauge, 2) Block kriging interpolation from a network of 13 rain gauges, 3) Averaged Radar estimation and 4) Universal block kriging from a rain gauge network and using Radar as an external covariate. Comparison of the model predictions with
monitoring data in the river showed a low sensitivity to the temporal scales proposed and a relative improvement with increasing spatial information linked to the climatological characteristics of the storm period.