<abstract xmlns="http://www.w3.org/1999/xhtml">

The paper highlights the contribution of the road traffic to PM2.5 air pollution, taking in consideration the atmospheric parameters. But, despite other studies, temperature and relative humidity are considered as moderating variable. The concentration of particulate matter is also influenced by local geography, urban structure, and streets shape. The case study was done in Bucharest, in an open area. The PM2.5 air concentration time series is proved stationary, an autoregressive model with two lags being tested. While the main effects of road traffic and humidity are significant, temperature has not a significant direct effect. But both moderators show interactive effects. The conditional effects are getting down with increase in temperature and humidity, due to changes in air dynamics and precipitation phenomena.
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The paper highlights the contribution of the road traffic to PM2.5 air pollution, taking in consideration the atmospheric parameters. But, despite other studies, temperature and relative humidity are considered as moderating variable. The concentration of particulate matter is also influenced by local geography, urban structure, and streets shape. The case study was done in Bucharest, in an open area. The PM2.5 air concentration time series is proved stationary, an autoregressive model with two lags being tested. While the main effects of road traffic and humidity are significant, temperature has not a significant direct effect. But both moderators show interactive effects. The conditional effects are getting down with increase in temperature and humidity, due to changes in air dynamics and precipitation phenomena.

A Moderation effect of atmospheric conditions on PM2.5 traffic related concentration

Professor, University Politehnica of Bucharest

Associated Professor, University Politehnica of Bucharest

Lecturer, University Politehnica of Bucharest

Ph.D. student, University Politehnica of Bucharest

Romanian Journal of Transport Infrastructure

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A Moderation effect of atmospheric conditions on PM traffic related concentration

The paper highlights the contribution of the road traffic to PM2.5 air pollution, taking in consideration the atmospheric parameters. But, despite other...

A Moderation effect of atmospheric conditions on PM_2.5 traffic related concentration

Published Online: Oct 06, 2023

Page range: 1 - 17

DOI: https://doi.org/10.2478/rjti-2023-0007

Keywords
particulate matter (PM), road traffic, urban congestion, atmospheric conditions, moderation model

© 2023 Eugen Roșca et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A Moderation effect of atmospheric conditions on PM2.5 traffic related concentration

Published Online: Oct 06, 2023

Page range: 1 - 17

DOI: https://doi.org/10.2478/rjti-2023-0007

Keywordsparticulate matter (PM), road traffic, urban congestion, atmospheric conditions, moderation model

© 2023 Eugen Roșca et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A Moderation effect of atmospheric conditions on PM_2.5 traffic related concentration

Keywords
particulate matter (PM), road traffic, urban congestion, atmospheric conditions, moderation model