Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Model description paper
25 Sep 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Model Development (GMD).
VEIN v0.2.2: an R package for bottom-up Vehicular Emissions Inventories
Sergio Ibarra-Espinosa1, Rita Ynoue1, Shane O'Sullivan2, Edzer Pebesma3, María de Fátima Andrade1, and Mauricio Osses4 1Department of Atmospheric Sciences, Universidade de São Paulo, Rua do Matão 1226, São Paulo, SP, Brazill
2Department of Pathology, Faculdade de Medicina, Universidade de São Paulo, Av. Dr. Arnaldo 455, São Paulo, SP, Brazil
3Institute for Geoinformatics, Westfälische Wilhelms-Universität Münster, Heisenbergstraße 2, 48149 Münster, Germany
4Department of Mechanical Engineering, Universidad Técnica Federico Santa María, Vicuña Mackenna 3939, Santiago, Chile
Abstract. Emission inventories are the quantification of pollutants from different sources. They provide important information not only for climate and weather studies, but also for urban planning and environmental health protection. We developed an open source model (named VEIN v0.2.2) that provides high resolution vehicular emissions inventories for different fields of studies. We focused on vehicular sources at street and hourly levels % they are the major source of air pollution in megacities. due to the current lack of information about these sources, mainly in developing countries. The type of emissions covered by VEIN are: exhaust (hot and cold) and evaporative considering the deterioration of the factors. VEIN also performs speciation and incorporates functions to generate and spatially allocate emissions databases. It allows users to load their own emissions factors, but it also provides emissions factors from the road transport model (Copert), the United States Environmental Protection Agency (EPA) and Brazilian databases. The VEIN model reads, distributes by age of use and extrapolates hourly traffic data, and estimates hourly and spatially emissions. Based on our knowledge, VEIN is the first bottom-up vehicle emissions software that allows input to the WRF-Chem model. Therefore, the VEIN model provides an important, easy and fast way of elaborating or analyzing vehicular emissions inventories, under different scenarios. The VEIN results can be used as an input for atmospheric models, health studies, air quality standardizations and decision making.

Citation: Ibarra-Espinosa, S., Ynoue, R., O'Sullivan, S., Pebesma, E., Andrade, M. D. F., and Osses, M.: VEIN v0.2.2: an R package for bottom-up Vehicular Emissions Inventories, Geosci. Model Dev. Discuss.,, in review, 2017.
Sergio Ibarra-Espinosa et al.
Sergio Ibarra-Espinosa et al.
Sergio Ibarra-Espinosa et al.


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Short summary
An emissions inventory is a compilation of the pollutants released in an area by different sources. The quantification of the vehicular emissions is difficult because these sources are in movement across streets. Also, the emissions processes are multiple and complex. In this paper, we are presenting an open source software for calculating vehicular emissions, including exhaust, cold-start, evaporative and wear. The software is an R package available at
An emissions inventory is a compilation of the pollutants released in an area by different...