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  1. Article ; Online: Did the COVID-19 lockdown in Delhi and Kolkata improve the ambient air quality of the two cities?

    Datta, Arindam / Rahman, Md Hafizur / Suresh, R

    Journal of environmental quality

    2021  Volume 50, Issue 2, Page(s) 485–493

    Abstract: To control the spread of COVID-19, the government of India imposed a nationwide lockdown ... on all nonessential activities from 22 Mar. to 3 May 2020. Daily ambient particulate matter ≤10 μm in diameter (PM ...

    Abstract To control the spread of COVID-19, the government of India imposed a nationwide lockdown on all nonessential activities from 22 Mar. to 3 May 2020. Daily ambient particulate matter ≤10 μm in diameter (PM
    MeSH term(s) Air Pollutants/analysis ; Air Pollution/analysis ; COVID-19 ; Cities ; Communicable Disease Control ; Environmental Monitoring ; Humans ; India ; Particulate Matter/analysis ; SARS-CoV-2
    Chemical Substances Air Pollutants ; Particulate Matter
    Language English
    Publishing date 2021-01-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 120525-0
    ISSN 1537-2537 ; 0047-2425
    ISSN (online) 1537-2537
    ISSN 0047-2425
    DOI 10.1002/jeq2.20192
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2958: Show issues Location:
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  2. Article: Did the COVID‐19 lockdown in Delhi and Kolkata improve the ambient air quality of the two cities?

    Datta, Arindam / Rahman, Md. Hafizur / Suresh, R.

    Journal of environmental quality. 2021 Mar., v. 50, no. 2

    2021  

    Abstract: ... the impact of the COVID‐19 lockdown on ambient pollutant concentrations. In 2020, average ambient ... in both cities. Average ambient O₃ concentration in Delhi was significantly lower in 2020 (38.5 μg m–³) compared ... particulate matter ≤2.5 μm in diameter (PM₂.₅), NO, NO₂, and O₃ concentrations in Delhi and Kolkata from 1 March to 3 ...

    Abstract To control the spread of COVID‐19, the government of India imposed a nationwide lockdown on all nonessential activities from 22 Mar. to 3 May 2020. Daily ambient particulate matter ≤10 μm in diameter (PM₁₀), particulate matter ≤2.5 μm in diameter (PM₂.₅), NO, NO₂, and O₃ concentrations in Delhi and Kolkata from 1 March to 3 May in both 2019 and 2020 were collected from different monitoring stations along with meteorological data to study the impact of the COVID‐19 lockdown on ambient pollutant concentrations. In 2020, average ambient concentrations of PM₁₀ and PM₂.₅ were significantly decreased (Delhi: 59 and 43%, respectively; Kolkata: 49 and 50%, respectively) during the lockdown period compared with the same period during 2019 in both cities. Average ambient O₃ concentration in Delhi was significantly lower in 2020 (38.5 μg m–³) compared with 2019 (44.7 μg m–³) during the study period. However, average ambient O₃ concentration was significantly higher during 2020 (46.9 μg m–³) compared with 2019 (31.4 μg m–³) in Kolkata. Effect size analysis of different predictive variables reveals that the lockdown period explains maximum variation in ambient concentrations of PM₁₀ and PM₂.₅ during 2020 in both cities. However, maximum variation in ambient O₃ concentrations in both cities was explained primarily by spatial variation rather than by the lockdown period. This study suggests that major policy implementation related to the transport and industrial sectors that aims to address the ambient air pollution problem in India may reduce the ambient particulate matter concentrations, although it may not have a significant effect on other ambient air pollutants such as O₃ in major Indian cities.
    Keywords COVID-19 infection ; air ; air pollution ; air quality ; issues and policy ; meteorological data ; particulates ; India
    Language English
    Dates of publication 2021-03
    Size p. 485-493.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 120525-0
    ISSN 1537-2537 ; 0047-2425
    ISSN (online) 1537-2537
    ISSN 0047-2425
    DOI 10.1002/jeq2.20192
    Database NAL-Catalogue (AGRICOLA)

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    Z 2687: Show issues

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