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| DOI | 10.1016/j.atmosenv.2020.118132 |
| Global and regional variations in aerosol loading during COVID-19 imposed lockdown | |
| Sanap S.D. | |
| 发表日期 | 2021 |
| ISSN | 1352-2310 |
| 卷号 | 246 |
| 英文摘要 | 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. © 2020 Elsevier Ltd |
| 关键词 | Aerosol optical depthAerosol radiative forcingCOVID-19LockdownRegional variationWildfire |
| 语种 | 英语 |
| scopus关键词 | Aerosols; Air quality; Atmospheric radiation; Deforestation; Fires; Quality control; Radiometers; Viruses; Aerosol optical depths; Aerosol radiative forcing; Anthropogenic aerosols; Anthropogenic emissions; Mitigation measures; Moderate resolution imaging spectroradiometer satellites; Research and application; Retrospective analysis; Loading; aerosol; aerosol property; air quality; anthropogenic effect; global perspective; health impact; MODIS; regional climate; satellite altimetry; aerosol; air quality; Article; coronavirus disease 2019; deforestation; East Asian; Mexico; optical depth; priority journal; radiative forcing; river basin; wildfire; Africa; Amazonas [Brazil]; Brazil; Mexico [North America]; South America; Coronavirus |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/248655 |
| 作者单位 | Climate Research and Services, India Meteorological Department, Ministry of Earth Sciences, Shivajinagar, Pune 411005, India |
| 推荐引用方式 GB/T 7714 | Sanap S.D.. Global and regional variations in aerosol loading during COVID-19 imposed lockdown[J],2021,246. |
| APA | Sanap S.D..(2021).Global and regional variations in aerosol loading during COVID-19 imposed lockdown.ATMOSPHERIC ENVIRONMENT,246. |
| MLA | Sanap S.D.."Global and regional variations in aerosol loading during COVID-19 imposed lockdown".ATMOSPHERIC ENVIRONMENT 246(2021). |
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