Including a-priori assessment of actual evapotranspiration for green roof daily scale hydrological modelling

  • In the last decades, there has been a widespread implementation of Green Infrastructures worldwide. Among these, green roofs appear to be particularly flexible sustainable drainage facilities. To predict their effectiveness for planning purposes, a tool is required that provides information as a function of local meteorological variables. Thus, a relatively simple daily scale, one-dimensional water balance approach has been proposed. The crucial evapotranspiration process, usually considered as a water balance dependent variable, is replaced here by empirical relationships providing an a-priori assessment of soil water losses through actual evapotranspiration. The modelling scheme, which under some simplification can be used without a calibration process, has been applied to experimental runoff data monitored at a green roof located near Bernkastel (Germany), between April 2005 and December 2006. Two different empirical relationships have been used to model actual evapotranspiration, considering a water availability limited and an energy limited scheme. Model errors quantification, ranging from 2% to 40% on the long-term scale and from 1% to 36% at the event scale, appear strongly related to the particularly considered relationship.

Download full text files

Export metadata

Author:Mirka Mobilia, Antonia Longobardi, Joachim F. Sartor
Parent Title (English):Water
Document Type:Article (specialist journals)
Date of OPUS upload:2022/09/05
Date of first Publication:2017/01/24
Publishing University:Hochschule Trier
Release Date:2022/09/05
Tag:actual evapotranspiration; advection-aridity method; antecedent precipitation index method; green infrastructures; green roof; sustainable urban drainage
GND Keyword:Stadtentwässerung; Dachbegrünung; Evapotranspiration
Page Number:13
First Page:1
Last Page:13
Departments:FB Bauen + Leben
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 69 Hausbau, Bauhandwerk
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International