EmiStatR: a simplified and scalable urban water quality model for simulation of combined sewer overflows

Jairo Arturo Torres-Matallana*, Ulrich Leopold, Kai Klepiszewski, Gerard B.M. Heuvelink

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

Many complex urban drainage quality models are computationally expensive. Complexity and computing times may become prohibitive when these models are used in a Monte Carlo (MC) uncertainty analysis of long time series, in particular for practitioners. Computationally scalable and fast "surrogate" models may reduce the overall computation time for practical applications in which often large data sets would be needed otherwise. We developed a simplified semi-distributed urban water quality model, EmiStatR, which brings uncertainty and sensitivity analyses of urban drainage water quality models within reach of practitioners. Its lower demand in input data and its scalability allow for simulating water volume and pollution loads in combined sewer overflows in several catchments fast and efficiently. The scalable code implemented in EmiStatR reduced the computation time significantly (by a factor of around 24 when using 32 cores). EmiStatR can be applied efficiently to test hypotheses by using MC uncertainty studies or long-term simulations.

Original languageEnglish
Article number782
JournalWater (Switzerland)
Volume10
Issue number6
DOIs
Publication statusPublished - 13 Jun 2018

Fingerprint

Combined sewers
Water Quality
hydrologic models
Water quality
Uncertainty
water quality
water
simulation
uncertainty
urban drainage
Drainage
uncertainty analysis
drainage water
pollution load
Water Pollution
time series analysis
drainage
Uncertainty analysis
Catchments
time series

Keywords

  • Fast surrogate model
  • Parallel computing
  • Urban water modelling

Cite this

Torres-Matallana, Jairo Arturo ; Leopold, Ulrich ; Klepiszewski, Kai ; Heuvelink, Gerard B.M. / EmiStatR: a simplified and scalable urban water quality model for simulation of combined sewer overflows. In: Water (Switzerland). 2018 ; Vol. 10, No. 6.
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EmiStatR: a simplified and scalable urban water quality model for simulation of combined sewer overflows. / Torres-Matallana, Jairo Arturo; Leopold, Ulrich; Klepiszewski, Kai; Heuvelink, Gerard B.M.

In: Water (Switzerland), Vol. 10, No. 6, 782, 13.06.2018.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Leopold, Ulrich

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AU - Heuvelink, Gerard B.M.

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AB - Many complex urban drainage quality models are computationally expensive. Complexity and computing times may become prohibitive when these models are used in a Monte Carlo (MC) uncertainty analysis of long time series, in particular for practitioners. Computationally scalable and fast "surrogate" models may reduce the overall computation time for practical applications in which often large data sets would be needed otherwise. We developed a simplified semi-distributed urban water quality model, EmiStatR, which brings uncertainty and sensitivity analyses of urban drainage water quality models within reach of practitioners. Its lower demand in input data and its scalability allow for simulating water volume and pollution loads in combined sewer overflows in several catchments fast and efficiently. The scalable code implemented in EmiStatR reduced the computation time significantly (by a factor of around 24 when using 32 cores). EmiStatR can be applied efficiently to test hypotheses by using MC uncertainty studies or long-term simulations.

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