Publicación:
THE EFFECT OF COVID-19 LOCKDOWNS ON THE AIR POLLUTION OF URBAN AREAS OF CENTRAL AND SOUTHERN CHILE

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dc.creatorKARINA ELIZABETH MORALES SOLÍS
dc.creatorHERNÁN RAÚL AHUMADA GUTIÉRREZ
dc.date2021
dc.date.accessioned2025-01-10T15:25:55Z
dc.date.available2025-01-10T15:25:55Z
dc.date.issued2021
dc.description.abstractWE PRESENT THE EFFECTS OF THE CONFINEMENT AND PHYSICAL DISTANCING POLICIES APPLIED DURING THE COVID-19 PANDEMIC ON THE CONCENTRATIONS OF PM10, PM2.5, NO, NO2 AND O3 IN 16 CITIES IN CENTRAL AND SOUTHERN CHILE. THE PERIOD BETWEEN MARCH AND MAY IN 2020 WAS COMPARED WITH THE CORRESPONDING MONTHS DURING 2017?2019, USING SURFACE DATA AND SATELLITE INFORMATION. THE RELATIVE PERCENT CHANGES IN THE CONCENTRATION OF ATMOSPHERIC POLLUTANTS, AND THE METEOROLOGICAL VARIABLES OBSERVED BETWEEN THESE TWO PERIODS WERE USED TO QUANTIFY THE EFFECTS OF THE LOCKDOWNS ON THE LOCAL AIR QUALITY OF THE URBAN AREAS STUDIED. THE RESULTS SHOWED STATISTICALLY SIGNIFICANT CHANGES IN 11 OF THE 16 CITIES. SIGNIFICANT RELATIVE CHANGES BETWEEN +14% AND ?33% WERE OBSERVED FOR PM10 IN 9 CITIES; WHILE STATISTICALLY SIGNIFICANT CHANGES BETWEEN -6% AND -48% WERE EVIDENT FOR PM2.5 IN 10 CITIES. SIGNIFICANT DECREASES BETWEEN ?27% AND ?55%, WERE OBSERVED IN 4 CITIES IN WHICH NO2 DATA WERE AVAILABLE; WHILE SIGNIFICANT INCREASES IN O3, BETWEEN 18% AND 43%, WERE FOUND IN 4 OF THE 5 CITIES WITH AVAILABLE DATA. THE LOCAL METEOROLOGICAL VARIABLES DID NOT SHOW SIGNIFICANT CHANGES BETWEEN BOTH PERIODS. IN ALL THE CITIES STUDIED, ONE OF THE MAIN PM SOURCES IS WOOD BURNING FOR RESIDENTIAL HEATING. ALTHOUGH THE QUARANTINE IMPOSED DURING THE HEALTH EMERGENCY COULD HAVE INDUCED AN INCREASE IN RESIDENTIAL EMISSIONS, THESE WERE COMPENSATED WITH THE REDUCTIONS IN VEHICULAR AND/OR INDUSTRIAL EMISSIONS. THEREFORE, THESE RESULTS SHOULD BE CAREFULLY INTERPRETED AND SHOULD INSPIRE NEW RESEARCH CONSIDERING THE SOCIAL, CULTURAL, AND ECONOMIC FACTORS THAT COULD ALTER THE COMMON EMISSION PATTERNS AND AIR QUALITY OF URBAN CENTERS.
dc.formatapplication/pdf
dc.identifier.doi10.4209/aaqr.200677
dc.identifier.issn2071-1409
dc.identifier.issn1680-8584
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/11984
dc.languagespa
dc.publisherAEROSOL AND AIR QUALITY RESEARCH
dc.relation.uri10.4209/aaqr.200677
dc.rightsPUBLICADA
dc.titleTHE EFFECT OF COVID-19 LOCKDOWNS ON THE AIR POLLUTION OF URBAN AREAS OF CENTRAL AND SOUTHERN CHILE
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.SedeCHILLÁN
ubb.SedeCHILLÁN
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