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dc.contributor.authorToro, Richard
dc.contributor.authorCatalán, Francisco
dc.contributor.authorUrdanivia Lermo, Francesco Renato
dc.contributor.authorRojas Quincho, Jhojan Pool
dc.contributor.authorManzano, Carlos A.
dc.contributor.authorSeguel, Rodrigo
dc.contributor.authorGallardo, Laura
dc.contributor.authorOsses, Mauricio
dc.contributor.authorPantoja, Nicolás
dc.contributor.authorLeiva-Guzmán, Manuel A.
dc.date.accessioned2021-02-22T16:22:41Z
dc.date.available2021-02-22T16:22:41Z
dc.date.issued2021-02
dc.identifier.urihttps://hdl.handle.net/20.500.12542/769
dc.description.abstractThe implementation of confinement and physical distancing measures to restrict people's activities and transit in the midst of the COVID-19 pandemic allowed us to study how these measures affect the air quality in urban areas with high pollution rates, such as Santiago, Chile. A comparative study between the concentrations of PM10, PM2.5, NOx, CO, and O3 during the months of March to May 2020 and the corresponding concentrations during the same period in 2017–2019 is presented. A combination of surface measurements from the air quality monitoring network of the city, remote satellite measurements, and simulations of traffic activity and road transport emissions allowed us to quantify the change in the average concentrations of each pollutant. Average relative changes of traffic emissions (between 61% and 68%) implied statistically significant concentrations reductions of 54%, 13%, and 11% for NOx, CO, and PM2.5, respectively, during the pandemic period compared to historical period. In contrast, the average concentration of O3 increased by 63% during 2020 compared to 2017–2019. The nonlinear response observed in the pollution levels can be attributed to the changes in the vehicular emission patterns during the pandemic and to the role of other sources such as residential emissions or secondary PM.es_PE
dc.formatapplication/pdf
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofurn:issn:2212-0955
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S221209552100033X
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Estados Unidos de América*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.sourceRepositorio Institucional - SENAMHIes_PE
dc.sourceServicio Nacional de Meteorología e Hidrología del Perúes_PE
dc.subjectCalidad del Airees_PE
dc.subjectContaminantes Atmosféricoses_PE
dc.subjectCalidad Ambientales_PE
dc.subjectVigilancia de Contaminanteses_PE
dc.subjectAir Quality
dc.subjectCOVID-19es_PE
dc.subjectSouth America
dc.titleAir pollution and COVID-19 lockdown in a large South American city: Santiago Metropolitan Area, Chile
dc.typeinfo:eu-repo/semantics/article
dc.identifier.isni0000 0001 0746 0446
dc.description.peerreviewPor pares
dc.identifier.doihttps://doi.org/10.1016/j.uclim.2021.100803
dc.identifier.journalUrban Climate
dc.subject.ocdehttps://purl.org/pe-repo/ocde/ford#1.05.08
dc.subject.ocdehttps://purl.org/pe-repo/ocde/ford#1.05.09


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