Title: An approach for road air emissions calculation: Portuguese case-study

Authors: Pedro M. Torres, Francisco Ferreira, Vitor F. Gois

Addresses: Department of Sciences and Environmental Engineering, College of Sciences and Technology of the New University of Lisbon, Quinta da Torre, P 2829-516 Caparica, Portugal. ' Department of Sciences and Environmental Engineering, College of Sciences and Technology of the New University of Lisbon, Quinta da Torre, P 2829-516 Caparica, Portugal. ' Inventar, Estudos e Projectos, Unip., LDA, Rua Sarmento Beiros, 15 – 8^°1esq, P 1900-410 Lisboa, Portugal

Abstract: A methodology to estimate road transportation emissions was developed with the main objective of improving emission estimates for those pollutants that are most dependent on the vehicle class and abatement technology. Emissions were estimated with a detailed level of disaggregation allowing the evaluation of measures aiming key source groups rather than road traffic in general. Those measures include reduction of speed limits, changes in fleet age or engine capacity, introduction of new technologies, among others. The methodology is coherent with the National Emission Inventory in terms of assumptions, activity data and emission factors.

Keywords: road transport; atmospheric emissions; climate change; air quality; air pollution; environmental pollution; traffic emissions; vehicle emissions; Portugal.

DOI: 10.1504/IJEP.2009.028698

International Journal of Environment and Pollution, 2009 Vol.39 No.3/4, pp.365 - 384

Published online: 23 Sep 2009 *

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