Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/8518
Title: Procedures for estimation of modelling uncertainty in air quality assessment
Author: Borrego, C.
Monteiro, A.
Ferreira, J.
Miranda, A. I.
Costa, A. M.
Carvalho, A. C.
Lopes, M.
Keywords: Air quality
Modelling
Quality indicators
Uncertainty
Issue Date: Jul-2008
Publisher: Elsevier
Abstract: The main objectives of this work focus, firstly, on a review of the current existent methodologies to estimate air quality modelling uncertainty, and, secondly, in the preparation of guidelines for modelling uncertainty estimation, which can be used by local and regional authorities responsible for air quality management. From the application exercise, it was concluded that it is possible to define a subset of statistical parameters able to reproduce the general uncertainties estimation. Concerning the quality indicators defined by EU directives, the results show that the legislated uncertainty estimation measures are ambiguous and inadequate in several aspects, mainly in what concerns the error measures for hourly and daily indicators based on the highest observed concentration. A relative error at the percentile correspondent to the allowed number of exceedances of the limit value was suggested and tested, showing that is a more robust and appropriate parameter for model performance evaluation.
Peer review: yes
URI: http://hdl.handle.net/10773/8518
DOI: 10.1016/j.envint.2007.12.005
ISSN: 0160-4120
Publisher Version: 10.1016/j.envint.2007.12.005
Appears in Collections:DAO - Artigos

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