2021
DOI: 10.3390/pollutants1030011
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Reviewing the Crop Residual Burning and Aerosol Variations during the COVID-19 Pandemic Hit Year 2020 over North India

Abstract: The north Indian states of Haryana and Punjab are believed to be the key sources of air pollution in the National Capital Region due to massive agricultural waste burning in crop harvesting seasons. However, with the pandemic COVID-19 hitting the country, the usual practices were disrupted. COVID-19 preventive lockdown led to restricted vehicular and industrial emissions and caused the labours to leave the agricultural business in Haryana and Punjab. With the changed scenario of 2020, the present study investi… Show more

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Cited by 7 publications
(3 citation statements)
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References 42 publications
(49 reference statements)
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“…Therefore, the impact of lockdown, viz., closure of vehicular traffic in the 1st phase, is not seen in Guwahati, instead a spike is observed because of possible enhancement in fires and residential activities. Hari et al ( 2021 ) observed a shift in the peak fire counts over Patiala to the end of May of 2020 instead of the beginning of May which occur during the normal periods due to the imposition of lockdown. Hence, Patiala experiences a positive change after a delay when compared to the normal years.…”
Section: Resultsmentioning
confidence: 99%
“…Therefore, the impact of lockdown, viz., closure of vehicular traffic in the 1st phase, is not seen in Guwahati, instead a spike is observed because of possible enhancement in fires and residential activities. Hari et al ( 2021 ) observed a shift in the peak fire counts over Patiala to the end of May of 2020 instead of the beginning of May which occur during the normal periods due to the imposition of lockdown. Hence, Patiala experiences a positive change after a delay when compared to the normal years.…”
Section: Resultsmentioning
confidence: 99%
“…Over the Indian region, the primary focus for analyzing the reduction in atmospheric pollution remains on particulate matter, NOx and SO2 (e.g., Sahu et al (2020), Singh et al (2020), Hari et al (2021), Tyagi et al (2021)). Limited studies have reported the variations in CH4 during the lockdown period.…”
Section: Accepted Manuscriptmentioning
confidence: 99%
“…TROPOMI -TROPOsferic Monitoring Instrument of Sentinel 5P platform traces major air pollutants: CO, CH4, HCHO, O3, NO2 and SO2 at the top of the Atmosphere (TOA) with a higher spatial resolution of 7.5 km daily (Hari et al, 2021). For this study, level 2 of the CH4, retrieved by the TROPOMI/WFM-DOAS algorithm, which is limited to cloud-free scenes, was selected and analyzed.…”
Section: Sentinel-5p Datamentioning
confidence: 99%