Spatiotemporal Analysis of Black Carbon Sources: Case of Santiago, Chile, under SARS-CoV-2 Lockdowns

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dc.catalogadorjca
dc.contributor.authorAdasme, Carla
dc.contributor.authorVillalobos, Ana María
dc.contributor.authorJorquera, Héctor
dc.date.accessioned2024-06-06T14:28:10Z
dc.date.available2024-06-06T14:28:10Z
dc.date.issued2022
dc.description.abstractBackground: The SARS-CoV-2 pandemic has temporarily decreased black carbon emissions worldwide. The use of multi-wavelength aethalometers provides a quantitative apportionment of black carbon (BC) from fossil fuels (BCff) and wood-burning sources (BCwb). However, this apportionment is aggregated: local and non-local BC sources are lumped together in the aethalometer results. Methods: We propose a spatiotemporal analysis of BC results along with meteorological data, using a fuzzy clustering approach, to resolve local and non-local BC contributions. We apply this methodology to BC measurements taken at an urban site in Santiago, Chile, from March through December 2020, including lockdown periods of different intensities. Results: BCff accounts for 85% of total BC; there was up to an 80% reduction in total BC during the most restrictive lockdowns (April–June); the reduction was 40–50% in periods with less restrictive lockdowns. The new methodology can apportion BCff and BCwb into local and non-local contributions; local traffic (wood burning) sources account for 66% (86%) of BCff (BCwb). Conclusions: The intensive lockdowns brought down ambient BC across the city. The proposed fuzzy clustering methodology can resolve local and non-local contributions to BC in urban zones.
dc.fuente.origenORCID
dc.identifier.doi10.3390/ijerph192417064
dc.identifier.issn1660-4601
dc.identifier.urihttps://doi.org/10.3390/ijerph192417064
dc.identifier.urihttps://www.mdpi.com/1660-4601/19/24/17064
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/86512
dc.information.autorucEscuela de Ingeniería; Jorquera Gonzalez, Hector Ivan Joaquin; 0000-0002-7462-7901; 100302
dc.issue.numero24
dc.language.isoen
dc.nota.accesocontenido completo
dc.pagina.final20
dc.pagina.inicio1
dc.revistaInternational Journal of Environmental Research and Public Health
dc.rightsacceso abierto
dc.subjectBlack carbon
dc.subjectAethalometer model
dc.subjectSpatiotemporal patterns
dc.subjectFuzzy clustering
dc.subjectFUSTA
dc.subject.ddc610
dc.subject.deweyMedicina y saludes_ES
dc.titleSpatiotemporal Analysis of Black Carbon Sources: Case of Santiago, Chile, under SARS-CoV-2 Lockdowns
dc.typeartículo
dc.volumen19
sipa.codpersvinculados100302
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