Sensitivity and uncertainty analyses of retention performance of green roofs considering aleatory and epistemic uncertainties

L. W. You, Y. K. Tung, Chulsang Yoo

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

A methodological framework is presented to integrate epistemic uncertainties into an aleatory-based probabilistic green roof model. In doing so, the sensitivity and uncertainty of the mean and standard deviation of retention ratio are assessed. Regression-based global sensitivity analysis showed that the first-order effect of model parameters plays the dominant role over the higher-order effect in contributing the overall uncertainty of statistical moments of retention ratio from the probabilistic green roof model used. Inclusion of epistemic uncertainties allows comprehensive evaluation of uncertainty associated with the performance of a green roof system, which further facilitates risk-based design of green roof systems.

Original languageEnglish
Article number012001
JournalIOP Conference Series: Earth and Environmental Science
Volume191
Issue number1
DOIs
Publication statusPublished - 2018 Nov 5
Externally publishedYes
Event4th International Conference on Water Resource and Environment, WRE 2018 - Kaohsiung City, Taiwan, Province of China
Duration: 2018 Jul 172018 Jul 21

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roof
sensitivity analysis
effect

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Sensitivity and uncertainty analyses of retention performance of green roofs considering aleatory and epistemic uncertainties. / You, L. W.; Tung, Y. K.; Yoo, Chulsang.

In: IOP Conference Series: Earth and Environmental Science, Vol. 191, No. 1, 012001, 05.11.2018.

Research output: Contribution to journalConference article

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