A simple rainfall-runoff model for the single and long term hydrological performance of green roofs

Luca Locatelli, Ole Mark, Peter Steen Mikkelsen, Karsten Arnbjerg-Nielsen, Barbara Kleinlercher, Maria Kerstin Roldin, Philip John Binning

Research output: Contribution to conferencePaperResearchpeer-review

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Abstract

Green roofs are being widely implemented for storm water control and runoff reduction. There is need for incorporating green roofs into urban drainage models in order to evaluate their impact. These models must have low computational costs and fine time resolution. This paper aims to develop a model of green roof hydrological performance. A simple conceptual model for the long term and single event hydrological performance of green roofs, shows to be capable of reproducing observed runoff measurements. The model has surface and subsurface storage components representing the overall retention capacity of the green roof. The runoff from the system is described by the non-linear reservoir method and the storage capacity of the green roof is continuously re-established by evapotranspiration. Runoff data from a green roof in Denmark are collected and used for parameter calibration.
Original languageEnglish
Publication date2013
Number of pages6
Publication statusPublished - 2013
Event8th International Conference on Planning and Technologies for Sustainable Urban Water Management - Lyon, France
Duration: 23 Jun 201327 Jun 2013
http://www.novatech.graie.org/a_index.php

Conference

Conference8th International Conference on Planning and Technologies for Sustainable Urban Water Management
CountryFrance
CityLyon
Period23/06/201327/06/2013
Internet address

Keywords

  • Evapotranspiration
  • Green roofs performance
  • Modelling
  • Peak-flow
  • Runoff
  • Single events
  • Urban drainage

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