2026-09-30T10:14:58Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/145552026-06-16T06:15:51Zcom_20.500.11984_473com_20.500.11984_14090col_20.500.11984_478

The role of local urban traffic and meteorological conditions in air pollution: a data-based case study in Madrid, Spain Laña, Ibai Del Ser, Javier Padró, Ales Vélez, Manuel Casanova Mateo, Carlos Urban air pollution Traffic flow Metereological conditions Supervised learning Random Forest Urban air pollution is a matter of growing concern for both public administrations and citizens. Road traffic is one of the main sources of air pollutants, though topography characteristics and meteorological conditions can make pollution levels increase or diminish dramatically. In this context an upsurge of research has been conducted towards functionally linking variables of such domains to measured pollution data, with studies dealing with up to one-hour resolution meteorological data. However, the majority of such reported contributions do not deal with traffic data or, at most, simulate traffic conditions jointly with the consideration of different topographical features. The aim of this study is to further explore this relationship by using high-resolution real traffic data. This paper describes a methodology based on the construction of regression models to predict levels of different pollutants (i.e. CO, NO, NO2, O3 and PM10) based on traffic data and meteorological conditions, from which an estimation of the predictive relevance (importance) of each utilized feature can be estimated by virtue of their particular training procedure. The study was made with one hour resolution meteorological, traffic and pollution historic data in roadside and background locations of the city of Madrid (Spain) captured over 2015. The obtained results reveal that the impact of vehicular emissions on the pollution levels is overshadowed by the effects of stable meteorological conditions of this city. 2026-06-15T13:32:03Z 2026-06-15T13:32:03Z 2016-04-19 1878-2442 https://hdl.handle.net/20.500.11984/14555 eng @ 2016 The authors, Published by Elsevier Ltd. Elsevier