Impact of Spatiotemporal Characteristics of Rainfall Inputs on Integrated Catchment Dissolved Oxygen Simulations

Antonio M. Moreno-Rodenas*, Francesca Cecinati, Jeroen Langeveld, Francois H.L.R. Clemens

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

5 Citations (Scopus)
163 Downloads (Pure)

Abstract

Integrated Catchment Modelling aims to simulate jointly urban drainage systems, wastewater treatment plant and rivers. The effect of rainfall input uncertainties in the modelling of individual urban drainage systems has been discussed in several studies already. However, this influence changes when simultaneously simulating several urban drainage subsystems and their impact on receiving water quality. This study investigates the effect of the characteristics of rainfall inputs on a large-scale integrated catchment simulator for dissolved oxygen predictions in the River Dommel (The Netherlands). Rainfall products were generated with varying time-aggregation (10, 30 and 60 min) deriving from different sources of data with increasing spatial information: (1) Homogeneous rainfall from a single rain gauge; (2) block kriging from 13 rain gauges; (3) averaged C-Band radar estimation and (4) kriging with external drift combining radar and rain gauge data with change of spatial support. The influence of the different rainfall inputs was observed at combined sewer overflows (CSO) and dissolved oxygen (DO) dynamics in the river. Comparison of the simulations with river monitoring data showed a low sensitivity to temporal aggregation of rainfall inputs and a relevant impact of the spatial scale with a link to the storm characteristics to CSO and DO concentration in the receiving water.

Original languageEnglish
Article number926
Number of pages21
JournalWater
Volume9
Issue number12
Early online date28 Nov 2017
DOIs
Publication statusPublished - Dec 2017

Keywords

  • Water quality modelling
  • Geostatistics
  • Integrated Catchment Modelling
  • Rainfall
  • Spatiotemporal variability

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    Moreno-Rodenas, A. M., Cecinati, F., Langeveld, J., & Clemens, F. H. L. R. (2017). Impact of Spatiotemporal Characteristics of Rainfall Inputs on Integrated Catchment Dissolved Oxygen Simulations. Water, 9(12), [926]. https://doi.org/10.3390/w9120926