Impact of COVID-19 Event on the Air Quality in Iran

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dc.contributor.authorBroomandi, Parya
dc.contributor.authorKaraca, Ferhat
dc.contributor.authorNikfal, Amirhossein
dc.contributor.authorJahanbakhshi, Ali
dc.contributor.authorTamjidi, Mahsa
dc.contributor.authorKim, Jong Ryeol
dc.date.accessioned2020-09-22T05:26:09Z
dc.date.available2020-09-22T05:26:09Z
dc.date.issued2020-07-03
dc.description.abstractThe first novel coronavirus case was confirmed in Iran in mid-February 2020. This followed by the enforcement of lockdown to tackle this contagious disease. This study aims to examine the potential effects of the COVID-19 lockdown on air quality in Iran. From 21st March to 21st April in 2019 and 2020, The Data were gathered from 12 air quality stations to analyse six criteria pollutants, namely O3, NO2, SO2, CO, PM10, and PM2.5. Due to the lack of ground-level measurements, using satellite data equipped us to assess changes in air quality during the study on Iranian megacities, especially in Tehran, i.e., the capital of Iran. In this city, concentrations of primary pollutants (SO2 5–28%, NO2 1–33%, CO 5–41%, PM10 1.4–30%) decreased with spatial variations. Although, still SO2, NO2, and PM10 exceeded the WHO daily limit levels for 31 days, 31 days, and four days, respectively. Conversely, O3 and PM2.5 increased by 0.5–103% and 2–50%. In terms of the national air quality, SO2 and NO2 levels decreased while AOD increased during the lockdown. Unfavourable meteorological conditions hindered pollutant dispersion. Moreover, reductions in the height of planetary boundary layer and rainfall were observed during the lockdown period. Despite the adverse weather conditions, a decrease in primary pollutant levels, confirms the possible improvements on the air quality in Iran.en_US
dc.identifier.citationBroomandi, P., Karaca, F., Nikfal, A., Jahanbakhshi, A., Tamjidi, M., & Kim, J. R. (2020). Impact of COVID-19 Event on the Air Quality in Iran. Aerosol and Air Quality Research, 20(8), 1793–1804. https://doi.org/10.4209/aaqr.2020.05.0205en_US
dc.identifier.issn1680-8584
dc.identifier.urihttps://doi.org/10.4209/aaqr.2020.05.0205
dc.identifier.urihttps://aaqr.org/articles/aaqr-20-05-covid-0205
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/4977
dc.language.isoenen_US
dc.publisherTaiwan Association for Aerosol Researchen_US
dc.relation.ispartofseriesAerosol and Air Quality Research;Volume 20, Issue 8, August 2020
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectSARS-CoV-2en_US
dc.subjectAtmospheric pollutionen_US
dc.subjectLockdownen_US
dc.subjectTehranen_US
dc.subjectNitrogen dioxideen_US
dc.subjectCarbon monoxideen_US
dc.subjectResearch Subject Categories::NATURAL SCIENCESen_US
dc.titleImpact of COVID-19 Event on the Air Quality in Iranen_US
dc.typeArticleen_US
workflow.import.sourcescience

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