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Traffic data in air quality modeling: a review of key variables, improvements in results, open problems and challenges in current research

Pinto, Janaina Antonino, Kumar, Prashant, Alonso, Marcelo Félix, Andreão, Willian Lemker, Pedruzzi, Rizzieri, Soares dos Santos, Fábio, Martins Moreira, Davidson and Toledo de Almeida Albuquerque, Taciana (2019) Traffic data in air quality modeling: a review of key variables, improvements in results, open problems and challenges in current research Atmospheric Pollution Research.

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Outdoor air pollution was responsible for approximately 4.2 million deaths around the world in 2016, with the emissions from road vehicles being the main source of air pollution in urban areas. To fulfill the need to identify the contribution of pollutants emitted by on-road vehicles and examine the limitations of various air quality models (boundary conditions, wind behavior representations, chemical mechanisms and reactions), a systematic review of the main traffic variables used in emissions and air quality modeling was performed. The discussion of their relationships, connections, and relevance showed a consistent sequence to generate traffic data using different traffic models. A list of key traffic variables to use as input data for vehicle emissions modeling and consequently to improve the accuracy of air quality modeling was proposed. A revision over 125 published articles was realized approaching methods to integrate traffic, emissions, air quality models, and detailing how these data can improve the results generated by the air quality model. Traffic models (macroscopic, mesoscopic, and microscopic) require variables at different levels of detail, such as traffic flow, speed, fuel consumption, and fleet composition. The emissions models (static and dynamic) are the key inputs to regional air quality models, but there is a tradeoff between the accuracy in emission estimates and the level of detail in model inputs. Meteorological data also influence the results. The conclusions showed that gaps remain on consistent emissions factors, spatial and temporal distributions, allocations of emissions on grid cells, and performance of the meteorological models. The average link-based traffic parameters are a persistent limitation. The proposed key traffic variables list point to flow per vehicle type as the most important variable. There is a need for scientific efforts to integrate traffic engineering data into emissions models to improve air quality modeling results using better traffic flow representations. Uncertainties in traffic data must first be analyzed, and accordingly a guidance with an accuracy reference for distinctive applications in different regions should be proposed.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
Pinto, Janaina Antonino
Alonso, Marcelo Félix
Andreão, Willian Lemker
Pedruzzi, Rizzieri
Soares dos Santos, Fábio
Martins Moreira, Davidson
Toledo de Almeida Albuquerque, Taciana
Date : 2019
Copyright Disclaimer : © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Uncontrolled Keywords : Traffic model; Emission inventory; Emission model; Air quality modeling; Urban area
Related URLs :
Depositing User : Clive Harris
Date Deposited : 25 Nov 2019 13:46
Last Modified : 25 Nov 2019 13:46

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