Comparison of short-term rainfall forecasts for modelbased flow prediction in urban drainage systems

Søren Liedtke Thorndahl, Troels Sander Poulsen, Thomas Bøvith, Morten Borup, Malte Ahm, Jesper Ellerbæk Nielsen, Morten Grum, Michael R. Rasmussen, Rasphall Gill, Peter Steen Mikkelsen

Research output: Contribution to journalJournal articleResearchpeer-review

14 Citations (Scopus)

Abstract

Forecast based flow prediction in drainage systems can be used to implement real time control of drainage systems. This study compares two different types of rainfall forecasts – a radar rainfall extrapolation based nowcast model and a numerical weather prediction model. The models are applied as input to an urban runoff model predicting the inlet flow to a waste water treatment plant. The modelled flows are auto-calibrated against real time flow observations in order to certify the best possible forecast. Results show that it is possible to forecast flows with a lead time of 24 h. The best performance of the system is found using the radar nowcast for the short leadtimes and weather model for larger lead times
Original languageEnglish
JournalWater Science and Technology
Volume68
Issue number2
Pages (from-to)472-478
Number of pages7
ISSN0273-1223
DOIs
Publication statusPublished - 2013

Keywords

  • DMI-HIRLAM
  • Forecast
  • Numerical Weather Model
  • Radar
  • Runoff Model

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