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

Broomandi, Parya ; Karaca, Ferhat ; Nikfal, Amirhossein ; Jahanbakhshi, Ali ; Tamjidi, Mahsa ; Kim, Jong Ryeol

Aerosol and Air Quality Research, 2020-08, Vol.20 (8), p.1793-1804 [Periódico revisado por pares]

Taoyuan City: 社團法人台灣氣膠研究學會

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Título:
Impact of COVID-19 Event on the Air Quality in Iran
Autor: Broomandi, Parya ; Karaca, Ferhat ; Nikfal, Amirhossein ; Jahanbakhshi, Ali ; Tamjidi, Mahsa ; Kim, Jong Ryeol
Assuntos: Air pollution ; Air quality ; Air quality criteria ; Boundary layers ; Carbon monoxide ; Coronaviruses ; COVID-19 ; Ground stations ; Megacities ; Nitrogen dioxide ; Outdoor air quality ; Particulate matter ; Planetary boundary layer ; Pollutants ; Pollution dispersion ; Pollution levels ; Population growth ; Quality assessment ; Rainfall ; Spatial variations ; Sulfur dioxide ; Viral diseases ; Weather
É parte de: Aerosol and Air Quality Research, 2020-08, Vol.20 (8), p.1793-1804
Descrição: The 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 21^(st) March to 21^(st) April in 2019 and 2020, The Data were gathered from 12 air quality stations to analyse six criteria pollutants, namely O_3, NO_2, SO_2, CO, PM_(10), and PM_(2.5). 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 (SO_2 5-28%, NO_2 1-33%, CO 5-41%, PM_(10) 1.4-30%) decreased with spatial variations. Although, still SO_2, NO_2, and PM_(10) exceeded the WHO daily limit levels for 31 days, 31 days, and four days, respectively. Conversely, O_3 and PM_(2.5) increased by 0.5-103% and 2-50%. In terms of the national air quality, SO_2 and NO_2 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.
Editor: Taoyuan City: 社團法人台灣氣膠研究學會
Idioma: Inglês

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

Broomandi, Parya ; Karaca, Ferhat ; Nikfal, Amirhossein ; Jahanbakhshi, Ali ; Tamjidi, Mahsa ; Kim, Jong Ryeol

Taoyuan City: 社團法人台灣氣膠研究學會

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