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Lessons from the COVID-19 air pollution decrease in Spain: Now what?
dc.contributor.author | Querol, Xavier | |
dc.contributor.author | Massagué, Jordi | |
dc.contributor.author | Alastuey, Andres | |
dc.contributor.author | Moreno, Teresa | |
dc.contributor.author | Gangoiti, Gotzon | |
dc.contributor.author | Mantilla, Enrique | |
dc.contributor.author | Duéguez, José Jaime | |
dc.contributor.author | Escudero Tellechea, Miguel | |
dc.contributor.author | Monfort, Eliseo | |
dc.contributor.author | Pérez García-Pando, Carlos | |
dc.contributor.author | Petetin, Hervé | |
dc.contributor.author | Jorba, Oriol | |
dc.contributor.author | Manzanares-Vázquez, Víctor | |
dc.contributor.author | de la Rosa, Jesús D | |
dc.contributor.author | Campos, Alberto | |
dc.contributor.author | Muñóz, Marta | |
dc.contributor.author | Monge, Silvia | |
dc.contributor.author | Hervás, María | |
dc.contributor.author | Javato, Rebeca | |
dc.contributor.author | Cornide, María J. | |
dc.date.accessioned | 2021-04-13T08:20:50Z | |
dc.date.available | 2021-04-13T08:20:50Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 0048-9697 | |
dc.identifier.uri | http://hdl.handle.net/10234/192806 | |
dc.description.abstract | We offer an overview of the COVID-19 -driven air quality changes across 11 metropolises in Spain with the focuson lessons learned on how continuing abating pollution. Trafficflow decreased by up to 80% during the lockdownand remained relatively low during the full relaxation (June and July). After the lockdown a significant shift frompublic transport to private vehicles (+21% in Barcelona) persisted due to the pervasive fear that using publictransport might increase the risk of SARS-CoV-2 infection, which need to be reverted as soon as possible. NO2levels fell below 50% of the WHO annual air quality guidelines (WHOAQGs), but those of PM2.5were reducedless than expected due to the lower contributions from traffic, increased contributions from agricultural and do-mestic biomass burning, or meteorological conditions favoring high secondary aerosol formation yields. Evenduring the lockdown, the annual PM2.5WHOAQG was exceeded in cities within the NE and E regions withhigh NH3emissions from farming and agriculture. Decreases in PM10levels were greater than in PM2.5due to reduced emissions from road dust, vehicle wear, and construction/demolition. Averaged O3daily maximum 8-h(8hDM) experienced a generalized decrease in the rural receptor sites in the relaxation (June–July) with−20%reduced mobility. For urban areas O38hDM responses were heterogeneous, with increases or decreases depend-ing on the period and location. Thus, after canceling out the effect of meteorology, 5 out of 11 cities experiencedO3decreases during the lockdown, while the remaining 6 either did not experience relevant reductions or in-creased. During the relaxation period and coinciding with the growing O3season (June–July), most cities expe-rienced decreases. However, the O3WHOAQG was still exceeded during the lockdown and full relaxationperiods in several cities. For secondary pollutants, such as O3and PM2.5, further chemical and dispersion model-ing along with source apportionment techniques to identify major precursor reduction targets are required toevaluate their abatement potential. | ca_CA |
dc.format.extent | 19 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Air quality | ca_CA |
dc.subject | Tropospheric ozone | ca_CA |
dc.subject | Air quality policy | ca_CA |
dc.subject | Pollution abatement | ca_CA |
dc.title | Lessons from the COVID-19 air pollution decrease in Spain: Now what? | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | https://doi.org/10.1016/j.scitotenv.2021.146380 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | https://www.sciencedirect.com/science/article/pii/S0048969721014480?via%3Dihub | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
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