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  1. Article: Changes in ambient particulate matter during the COVID-19 and associations with biomass burning and Sahara dust in northern Colombia.

    Rojano, Roberto / Arregocés, Heli / Gámez Frías, Eider

    Heliyon

    2021  Volume 7, Issue 12, Page(s) e08595

    Abstract: The restriction of mobility due to preventive social isolation has improved air quality in many regions of the world. At the same time, global and regional atmospheric phenomena such as biomass burning or dust transport from Sahara can exacerbate ... ...

    Abstract The restriction of mobility due to preventive social isolation has improved air quality in many regions of the world. At the same time, global and regional atmospheric phenomena such as biomass burning or dust transport from Sahara can exacerbate particulate matter (PM) mass. In this study, PM
    Language English
    Publishing date 2021-12-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2021.e08595
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Changes in ambient particulate matter during the COVID-19 and associations with biomass burning and Sahara dust in northern Colombia

    Rojano, Roberto / Arregocés, Heli / Gámez Frías, Eider

    Heliyon. 2021 Dec., v. 7, no. 12

    2021  

    Abstract: The restriction of mobility due to preventive social isolation has improved air quality in many regions of the world. At the same time, global and regional atmospheric phenomena such as biomass burning or dust transport from Sahara can exacerbate ... ...

    Abstract The restriction of mobility due to preventive social isolation has improved air quality in many regions of the world. At the same time, global and regional atmospheric phenomena such as biomass burning or dust transport from Sahara can exacerbate particulate matter (PM) mass. In this study, PM₁₀ and PM₂.₅ concentrations were evaluated in industrial and urban areas during the lockdown period due to COVID-19 in northern Colombia. Aerosol Optical Depth (AOD) observations obtained from the spaceborne MODIS (MOD04-3k) and the active fire data was obtained from VIIRS Active Fire. We measured surface contamination at several stations to quantify the PM₁₀ and PM₂.₅ changes associated with the general closure of anthropogenic and industrial activities driven by COVID-19 and by the macroscale and/or mesoscale contributions. In the industrial zone, a slight decrease in daily concentrations was detected at the stations located near the mining operations. In the urban area, the decrease is more salient in COVID-19 lockdown. A reduction rate in the daily averages of PM10 of 23.3%, 6.0%, and 19.0% was observed in the SCa, SBi, and SUn stations, respectively. The biomass burning episode has contributed 52% to the daily average of PM₁₀ and 45% to the daily average of PM₂.₅. The episode due to the passage of Saharan dust through the Caribbean Sea has contributed 79% to the daily average of PM₁₀ (150.75 μg/m³) and on 57% to the daily average of PM₂.₅.
    Keywords COVID-19 infection ; aerosols ; air quality ; biomass ; dust ; particulates ; urban areas ; Caribbean Sea ; Colombia
    Language English
    Dates of publication 2021-12
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2021.e08595
    Database NAL-Catalogue (AGRICOLA)

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    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

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