Dataset Information

Global and regional variations in aerosol loading during COVID-19 imposed lockdown.

ABSTRACT: In the backdrop of upward trend in anthropogenic aerosols over global hotspot regions, the air quality had improved worldwide post declaration of the Corona virus disease-2019 (COVID-19) as a global pandemic in mid-March-2020. Present study using Moderate Resolution Imaging Spectroradiometer (MODIS) satellite derived aerosol optical depth (AOD) and the Modern-Era Retrospective analysis for Research and Applications (MERRA) version-2 datasets however, demonstrates the regional variation in aerosol loading during peak of the lockdown period. Reduction in aerosol loading over majority of the aerosol hotspots is observed from mid-March/April-2020 with highest percentage reduction in the month of May. Reduction in aerosol loading over global hotspots resulted in positive surface aerosol radiative forcing (ARF, up to 6 Wm^-2). Albeit reduction in aerosol loading observed worldwide, the considerable above normal aerosol burden was identified during April-May 2020 over the Amazon river basin, northern parts of the South America, Mexico region, South-West parts of the Africa and South East Asian region. Analysis revealed that the wildfire emission contributed significantly in anomalous aerosol burden over these regions during the lockdown period. An appropriate mitigation measures to reduce wildfire emissions is essential in addition to controlled anthropogenic emissions as far as air quality, deforestation and ecosystem is concerned.

SUBMITTER: Sanap SD

PROVIDER: S-EPMC7722495 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Global and regional variations in aerosol loading during COVID-19 imposed lockdown.

Sanap S D SD

Atmospheric environment (Oxford, England : 1994) 20201208

In the backdrop of upward trend in anthropogenic aerosols over global hotspot regions, the air quality had improved worldwide post declaration of the Corona virus disease-2019 (COVID-19) as a global pandemic in mid-March-2020. Present study using Moderate Resolution Imaging Spectroradiometer (MODIS) satellite derived aerosol optical depth (AOD) and the Modern-Era Retrospective analysis for Research and Applications (MERRA) version-2 datasets however, demonstrates the regional variation in aeroso ...[more]

PMID: 33318725

Similar Datasets

Project description:Introduction: COVID-19 lockdown measures have been sources of both potential stress and possible psychological and addiction complications. A lack of activity and isolation during lockdown are among the factors thought to be behind the growth in the use of psychoactive substances and worsening addictive behaviors. Previous studies on the pandemic have attested to an increase in alcohol consumption during lockdowns. Likewise, data suggest there has also been a rise in the use of cannabis, although it is unclear how this is affected by external factors. Our study used quantitative data collected from an international population to evaluate changes in cannabis consumption during the lockdown period between March and October, 2020. We also compared users and non-users of the drug in relation to: (1) socio-demographic differences, (2) emotional experiences, and (3) the information available and the degree of approval of lockdown measures. Methods: An online self-report questionnaire concerning the lockdown was widely disseminated around the globe. Data was collected on sociodemographics and how the rules imposed had influenced the use of cannabis and concerns about health, the economic impact of the measures and the approach taken by government(s). Results: One hundred eighty two respondents consumed cannabis before the lockdown vs. 199 thereafter. The mean cannabis consumption fell from 13 joints per week pre-lockdown to 9.75 after it (p < 0.001). Forty-nine respondents stopped using cannabis at all and 66 admitted to starting to do so. The cannabis users were: less satisfied with government measures; less worried about their health; more concerned about the impact of COVID-19 on the economy and their career; and more frightened of becoming infected in public areas. The risk factors for cannabis use were: age (OR = 0.96); concern for physical health (OR = 0.98); tobacco (OR = 1.1) and alcohol consumption during lockdown (OR = 1.1); the pre-lockdown anger level (OR = 1.01); and feelings of boredom during the restrictions (OR = 1.1). Conclusion: In a specific sub-population, the COVID-19 lockdown brought about either an end to the consumption of cannabis or new use of the drug. The main risk factors for cannabis use were: a lower age, co-addictions and high levels of emotions.

Dataset Information

Global and regional variations in aerosol loading during COVID-19 imposed lockdown.

Publications

Global and regional variations in aerosol loading during COVID-19 imposed lockdown.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets