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On the impact of excess diesel NOX emissions upon NO2 pollution in a compact city
dc.contributor.author | Benavides, Jaime |
dc.contributor.author | Guevara Vilardell, Marc |
dc.contributor.author | Snyde, Michelle G |
dc.contributor.author | Rodríguez Rey, Daniel |
dc.contributor.author | Soret, Albert |
dc.contributor.author | Pérez García-Pando, Carlos |
dc.contributor.author | Jorba Casellas, Oriol |
dc.contributor.other | Barcelona Supercomputing Center |
dc.date.accessioned | 2021-02-24T15:47:11Z |
dc.date.available | 2021-02-24T15:47:11Z |
dc.date.issued | 2021 |
dc.identifier.citation | Benavides, J. [et al.]. On the impact of excess diesel NOX emissions upon NO2 pollution in a compact city. "Environmental Research Letters", 2021, vol. 16, núm. 2, 024024. |
dc.identifier.uri | http://hdl.handle.net/2117/340453 |
dc.description.abstract | NOX emissions from diesel light-duty-vehicles (LDV) largely exceed the Euro emission standards in real-world driving conditions. Recent studies have quantified their impact upon air quality and human health primarily based on air quality models at mesoscale and large-scale resolutions. Here, we show that these approaches can significantly underestimate the impact of diesel LDV excess NOX emissions upon NO2 pollution in cities, particularly in the more compact and heavily trafficked ones. We compare an air quality mesoscale model at both 4 and 1 km resolution with a street-scale model in Barcelona, a compact city where the EU annual NO2 limits are repeatedly exceeded and a large share of passenger cars are diesel (65%). We compare consistently two emissions scenarios: a business-as-usual scenario where diesel LDV emit NOX in excess, and a counterfactual standard limits scenario where emissions are compliant with the Euro emission standards. We first show that in contrast to the mesoscale model, the street scale model is able to largely represent the observed NO2 concentration gradients between traffic and background stations in the city. In a second step, we find that the mesoscale model strongly underestimates the impact of diesel LDV excess NOX emissions upon NO2 pollution both in absolute terms (by 38%–48%) and relative terms (by 10%–35%). We argue that such underestimated impacts should be considered when assessing NOX excess emissions by LDV in cities. Using the street scale model, we find that diesel LDV excess NOX emissions are associated with about 20% of NO2 levels in the city, contributing substantially to an increased number of citizens exposed to high NO2 pollution in Barcelona. |
dc.description.sponsorship | The authors thank the Generalitat de Catalunya for providing access to the measurements of the official monitoring network XVPCA and Pablo Martínez from the urban planning studio 300 000 km s−1 for providing the census-level population dataset disaggregated at the address level. The authors acknowledge PRACE and RES for awarding access to Marenostrum4 based in Spain at the Barcelona Supercomputing Center through the eFRAGMENT2 and AECT-2020-1-0007 projects. Jaime Benavides was funded by grant BES-2014-070637 from the FPI programme by the Spanish Ministry of the Economy and Competitiveness. The authors also acknowledge the support from the Ministerio de Ciencia, Innovación y Universidades (MICINN) as part of the BROWNING project RTI2018-099894-B-I00 and NUTRIENT project CGL2017-88911-R and the support from the Agencia Estatal de Investigacion (AEI) as part of the VITALISE project (PID2019-108086RA-I00/AEI/10.13039/501100011033). Carlos Pérez García-Pando acknowledges the long-term support from the AXA Research Fund, as well as the support received through the Ramón y Cajal programme (Grant RYC-2015-18690) of the Spanish Ministry of Economy and Competitiveness. |
dc.format.extent | 12 p. |
dc.language.iso | eng |
dc.publisher | IOP Publishing Ltd |
dc.rights | Attribution 3.0 Spain |
dc.rights | Attribution 4.0 International (CC BY 4.0) |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ |
dc.subject | Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica |
dc.subject.lcsh | Diesel automobiles |
dc.subject.other | Air quality |
dc.subject.other | Model resolution |
dc.subject.other | Light duty vehicles |
dc.subject.other | Excess diesel NOX emissions |
dc.subject.other | NO2 concentrations |
dc.subject.other | NO2 exposure |
dc.title | On the impact of excess diesel NOX emissions upon NO2 pollution in a compact city |
dc.type | Article |
dc.subject.lemac | Motors dièsel -- Gas d'escapament |
dc.subject.lemac | Qualitat ambiental |
dc.subject.lemac | Aire -- Contaminació |
dc.identifier.doi | 10.1088/1748-9326/abd5dd |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://iopscience.iop.org/article/10.1088/1748-9326/abd5dd#erlabd5dds6 |
dc.rights.access | Open Access |
dc.description.version | Postprint (published version) |
local.citation.other | 024024 |
local.citation.publicationName | Environmental Research Letters |
local.citation.volume | 16 |
local.citation.number | 2 |
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