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

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dc.contributor.authorParya Broomandi
dc.contributor.authorFerhat Karaca
dc.contributor.authorAmirhossein Nikfal
dc.contributor.authorAli Jahanbakhshi
dc.contributor.authorMahsa Tamjidi
dc.contributor.authorJong Ryeol Kim
dc.date.accessioned2025-08-19T12:40:04Z
dc.date.available2025-08-19T12:40:04Z
dc.date.issued2020-01-01
dc.description.abstractThis study examines changes in air quality during Iran’s COVID-19 lockdown (21 March–21 April 2020 vs same period 2019) using data from 12 ground stations and satellite observations. In Tehran, primary pollutants SO2 (−5–28%), NO2 (−1–33%), CO (−5–41%), and PM10 (−1.4–30%) decreased, while O3 (↑0.5–103%) and PM2.5 (↑2–50%) increased. Nationally, SO2 and NO2 decreased, but aerosol optical depth (AOD) increased. Unfavorable meteorology—including reduced planetary boundary layer height and rainfall—limited dispersion, yet air quality improved due to reduced emissions. en
dc.identifier.citationBroomandi P, Karaca F, Nikfal A, Jahanbakhshi A, Tamjidi M, Kim JR (2020). Impact of COVID-19 Event on the Air Quality in Iran. Aerosol and Air Quality Research, 20:1793–1804. doi:10.4209/aaqr.2020.05.0205 en
dc.identifier.doi10.4209/aaqr.2020.05.0205
dc.identifier.urihttps://doi.org/10.4209/aaqr.2020.05.0205
dc.identifier.urihttps://nur.nu.edu.kz/handle/123456789/9626
dc.language.isoen
dc.publisherTaiwan Association for Aerosol Research
dc.relation.ispartofAerosol and Air Quality Researchen
dc.sourceAerosol and Air Quality Research, 20(8), (2020)en
dc.subject[COVID-19, air quality, Iran, lockdown, Tehran, NO2, SO2, PM10, PM2.5, O3, AOD], en
dc.titleImpact of COVID-19 Event on the Air Quality in Iranen
dc.typeJournal Articleen

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