Spatio-temporal variation in fine particulate matter and effect on air quality during the COVID-19 in New Delhi, India

Bhupendra Pratap Singh; Pramod Kumar

doi:10.1016/j.uclim.2021.101013

Spatio-temporal variation in fine particulate matter and effect on air quality during the COVID-19 in New Delhi, India

Bhupendra Pratap Singh
, Pramod Kumar

University of Delhi

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

Novel Coronavirus disease has affected almost all the countries; which leads to the pandemic, impacting adversely on environment. The impact on environment during pre-and during lockdowns needs an attention to correlate the pollutants from industrial emissions and other factors. Therefore, the current study demonstrates the changes in fine particulate matter PM_2.5, PM₁₀ and effect on air quality during lockdown. The highest reduction was observed in lockdown I (25 March - 14 April) as compared to others lockdowns (between 15 April and 31st May 2020) due to the complete shutdown of industrial, transport, and construction activities. A significant reduction in PM_2.5 and PM₁₀ from 114.27 μg/m³ and 194.48 μg/m³ for pre-lockdown period to 41.41 μg/m³ and 86.81 μg/m³ for lockdown I was observed. The levels of air quality index fall under satisfactory category for lockdown I whereas satisfactory to moderate category for other lockdowns. The present study revealed a strong correlation between PM_2.5 and PM₁₀ levels during the pre-lockdown period (0.71) and through lockdown IV (0.76), which indicate that change in the PM₁₀ level influences the PM_2.5 level greatly. The findings of the present study could be scaled up nationwide and might be useful in formulating air pollution reduction policies in the future.

Original language	English
Article number	101013
Journal	Urban Climate
Volume	40
DOIs	https://doi.org/10.1016/j.uclim.2021.101013
State	Published - Dec 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021

Funding

The first author thanks to Ms. Sonia Kumari, Mr. Sumit Singh Dhalan, Miss Pallvi Rana, Ms. Pooja Deep and Miss Nishtha Mittal for insightful discussion and valuable suggestions during preparation of the manuscript. This paper and the research behind it would not have been possible without the exceptional support of Dr. Shalender Singh Chauhan of Deshbandhu college, University of Delhi.

Funders
University of Delhi

Keywords

COVID-19
Emission reduction
Lockdown period
Particulate matter

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10.1016/j.uclim.2021.101013

Cite this

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abstract = "Novel Coronavirus disease has affected almost all the countries; which leads to the pandemic, impacting adversely on environment. The impact on environment during pre-and during lockdowns needs an attention to correlate the pollutants from industrial emissions and other factors. Therefore, the current study demonstrates the changes in fine particulate matter PM2.5, PM10 and effect on air quality during lockdown. The highest reduction was observed in lockdown I (25 March - 14 April) as compared to others lockdowns (between 15 April and 31st May 2020) due to the complete shutdown of industrial, transport, and construction activities. A significant reduction in PM2.5 and PM10 from 114.27 μg/m3 and 194.48 μg/m3 for pre-lockdown period to 41.41 μg/m3 and 86.81 μg/m3 for lockdown I was observed. The levels of air quality index fall under satisfactory category for lockdown I whereas satisfactory to moderate category for other lockdowns. The present study revealed a strong correlation between PM2.5 and PM10 levels during the pre-lockdown period (0.71) and through lockdown IV (0.76), which indicate that change in the PM10 level influences the PM2.5 level greatly. The findings of the present study could be scaled up nationwide and might be useful in formulating air pollution reduction policies in the future.",

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AB - Novel Coronavirus disease has affected almost all the countries; which leads to the pandemic, impacting adversely on environment. The impact on environment during pre-and during lockdowns needs an attention to correlate the pollutants from industrial emissions and other factors. Therefore, the current study demonstrates the changes in fine particulate matter PM2.5, PM10 and effect on air quality during lockdown. The highest reduction was observed in lockdown I (25 March - 14 April) as compared to others lockdowns (between 15 April and 31st May 2020) due to the complete shutdown of industrial, transport, and construction activities. A significant reduction in PM2.5 and PM10 from 114.27 μg/m3 and 194.48 μg/m3 for pre-lockdown period to 41.41 μg/m3 and 86.81 μg/m3 for lockdown I was observed. The levels of air quality index fall under satisfactory category for lockdown I whereas satisfactory to moderate category for other lockdowns. The present study revealed a strong correlation between PM2.5 and PM10 levels during the pre-lockdown period (0.71) and through lockdown IV (0.76), which indicate that change in the PM10 level influences the PM2.5 level greatly. The findings of the present study could be scaled up nationwide and might be useful in formulating air pollution reduction policies in the future.

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Spatio-temporal variation in fine particulate matter and effect on air quality during the COVID-19 in New Delhi, India

Abstract

Bibliographical note

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Keywords

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