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Assessment of temporal shifting of PM(2.5), lockdown effect, and influences of seasonal meteorological factors over the fastest-growing megacity, Dhaka
Dhaka is subjected to high pollution levels throughout the year, holding some relatively high amounts of pollution readings, making its air unhealthy to breathe. The study examined hourly, shifting, seasonal fluctuations in particulate matter (PM(2.5)), the effects of seasonal meteorological variabl...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Nature Singapore
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8933196/ http://dx.doi.org/10.1007/s41324-022-00441-w |
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author | Faisal, Abdullah-Al- Kafy, Abdulla - Al Abdul Fattah, Md. Amir Jahir, Dewan Md. Al Rakib, Abdullah Rahaman, Zullyadini A. Ferdousi, Jannatul Huang, Xiao |
author_facet | Faisal, Abdullah-Al- Kafy, Abdulla - Al Abdul Fattah, Md. Amir Jahir, Dewan Md. Al Rakib, Abdullah Rahaman, Zullyadini A. Ferdousi, Jannatul Huang, Xiao |
author_sort | Faisal, Abdullah-Al- |
collection | PubMed |
description | Dhaka is subjected to high pollution levels throughout the year, holding some relatively high amounts of pollution readings, making its air unhealthy to breathe. The study examined hourly, shifting, seasonal fluctuations in particulate matter (PM(2.5)), the effects of seasonal meteorological variables, and the lockdown effect over the megacity of Dhaka from 2019 to 2021 using data from AirNow. The results indicate the daily average PM(2.5) concentration between 2019 and 2021 was 112.49 µg/m(3), about four times higher than the WHO limit and two times higher than the Bangladesh standard. Daily PM(2.5) concentrations was high during morning and evening pick-up hours, reaching a maximum hourly concentration of 472.9 µg/m(3) in February 2020. The maximum average PM(2.5) concentration was 211.23 µg/m(3) in March 2021 (winter season), and the lowest average was 27.58 µg/m(3) in August 2020 (rainy season). The Pearson correlation coefficient (r) between the PM(2.5) and meteorological variables were inverse with rainfall (− 0.62), temperature (− 0.73), humidity (− 0.82), but positive with wind (0.09). Daily average Air Quality Index (AQI) concentrations improved from 108.53 to 67.99 µg/m(3) during the lockdown period. Finally, the study recommended many mitigation strategies that might assist accountable authorities in lowering the number of life-threatening components in the air. |
format | Online Article Text |
id | pubmed-8933196 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Springer Nature Singapore |
record_format | MEDLINE/PubMed |
spelling | pubmed-89331962022-03-21 Assessment of temporal shifting of PM(2.5), lockdown effect, and influences of seasonal meteorological factors over the fastest-growing megacity, Dhaka Faisal, Abdullah-Al- Kafy, Abdulla - Al Abdul Fattah, Md. Amir Jahir, Dewan Md. Al Rakib, Abdullah Rahaman, Zullyadini A. Ferdousi, Jannatul Huang, Xiao Spat. Inf. Res. Article Dhaka is subjected to high pollution levels throughout the year, holding some relatively high amounts of pollution readings, making its air unhealthy to breathe. The study examined hourly, shifting, seasonal fluctuations in particulate matter (PM(2.5)), the effects of seasonal meteorological variables, and the lockdown effect over the megacity of Dhaka from 2019 to 2021 using data from AirNow. The results indicate the daily average PM(2.5) concentration between 2019 and 2021 was 112.49 µg/m(3), about four times higher than the WHO limit and two times higher than the Bangladesh standard. Daily PM(2.5) concentrations was high during morning and evening pick-up hours, reaching a maximum hourly concentration of 472.9 µg/m(3) in February 2020. The maximum average PM(2.5) concentration was 211.23 µg/m(3) in March 2021 (winter season), and the lowest average was 27.58 µg/m(3) in August 2020 (rainy season). The Pearson correlation coefficient (r) between the PM(2.5) and meteorological variables were inverse with rainfall (− 0.62), temperature (− 0.73), humidity (− 0.82), but positive with wind (0.09). Daily average Air Quality Index (AQI) concentrations improved from 108.53 to 67.99 µg/m(3) during the lockdown period. Finally, the study recommended many mitigation strategies that might assist accountable authorities in lowering the number of life-threatening components in the air. Springer Nature Singapore 2022-03-19 2022 /pmc/articles/PMC8933196/ http://dx.doi.org/10.1007/s41324-022-00441-w Text en © The Author(s), under exclusive licence to Korean Spatial Information Society 2022 This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic. |
spellingShingle | Article Faisal, Abdullah-Al- Kafy, Abdulla - Al Abdul Fattah, Md. Amir Jahir, Dewan Md. Al Rakib, Abdullah Rahaman, Zullyadini A. Ferdousi, Jannatul Huang, Xiao Assessment of temporal shifting of PM(2.5), lockdown effect, and influences of seasonal meteorological factors over the fastest-growing megacity, Dhaka |
title | Assessment of temporal shifting of PM(2.5), lockdown effect, and influences of seasonal meteorological factors over the fastest-growing megacity, Dhaka |
title_full | Assessment of temporal shifting of PM(2.5), lockdown effect, and influences of seasonal meteorological factors over the fastest-growing megacity, Dhaka |
title_fullStr | Assessment of temporal shifting of PM(2.5), lockdown effect, and influences of seasonal meteorological factors over the fastest-growing megacity, Dhaka |
title_full_unstemmed | Assessment of temporal shifting of PM(2.5), lockdown effect, and influences of seasonal meteorological factors over the fastest-growing megacity, Dhaka |
title_short | Assessment of temporal shifting of PM(2.5), lockdown effect, and influences of seasonal meteorological factors over the fastest-growing megacity, Dhaka |
title_sort | assessment of temporal shifting of pm(2.5), lockdown effect, and influences of seasonal meteorological factors over the fastest-growing megacity, dhaka |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8933196/ http://dx.doi.org/10.1007/s41324-022-00441-w |
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