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| DOI | 10.1016/j.atmosenv.2021.118386 |
| Impact of lockdown during the COVID-19 outbreak on multi-scale air quality | |
| Bray C.D.; Nahas A.; Battye W.H.; Aneja V.P. | |
| 发表日期 | 2021 |
| ISSN | 1352-2310 |
| 卷号 | 254 |
| 英文摘要 | One of the multi-facet impacts of lockdowns during the unprecedented COVID-19 pandemic was restricted economic and transport activities. This has resulted in the reduction of air pollution concentrations observed globally. This study is aimed at examining the concentration changes in air pollutants (i.e., carbon monoxide (CO), nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3), and particulate matters (PM2.5 and PM10) during the period March–April 2020. Data from both satellite observations (for NO2) and ground-based measurements (for all other pollutants) were utilized to analyze the changes when compared against the same months between 2015 and 2019. Globally, space borne NO2 column observations observed by satellite (OMI on Aura) were reduced by approximately 9.19% and 9.57%, in March and April 2020, respectively because of public health measures enforced to contain the coronavirus disease outbreak (COVID-19). On a regional scale and after accounting for the effects of meteorological variability, most monitoring sites in Europe, USA, China, and India showed declines in CO, NO2, SO2, PM2.5, and PM10 concentrations during the period of analysis. An increase in O3 concentrations occurred during the same period. Meanwhile, four major cities case studies i.e. in New York City (USA), Milan (Italy), Wuhan (China), and New Delhi (India) have also shown a similar reduction trends as observed on the regional scale, and an increase in ozone concentration. This study highlights that the reductions in air pollutant concentrations have overall improved global air quality likely driven in part by economic slowdowns resulting from the global pandemic. © 2021 Elsevier Ltd |
| 关键词 | Air pollutionCOVID-19Global analysisGround-based measurementsSatellite measurements |
| 语种 | 英语 |
| scopus关键词 | Air quality; Carbon monoxide; Nitrogen oxides; Ozone; Sulfur dioxide; Ultraviolet spectrometers; % reductions; COVID-19; Global analysis; Ground based measurement; NO $-2$; PM$-10$; PM$-2.5$; Regional scale; Satellite measurements; SO$-2$; Satellites; carbon monoxide; nitrogen dioxide; ozone; sulfur dioxide; air quality; atmospheric pollution; carbon monoxide; concentration (composition); COVID-19; nitrogen dioxide; public health; urban pollution; viral disease; Africa; air monitoring; air pollutant; air pollution; air quality; Article; Asia; Australia; China; concentration (parameter); controlled study; coronavirus disease 2019; economic recession; environmental impact; Europe; human; India; Italy; meteorology; national lockdown; New York; North America; Pacific islands; pandemic; particulate matter 10; particulate matter 2.5; pollution monitoring; priority journal; South America; travel restriction; trend study; United States; China; Delhi; Europe; Hubei; India; Italy; Lombardy; Milan [Milano]; Milan [Milano]; Milano [Lombardy]; New Delhi; New York [New York (STT)]; New York [United States]; United States; Wuhan; 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/248441 |
| 作者单位 | Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC, United States |
| 推荐引用方式 GB/T 7714 | Bray C.D.,Nahas A.,Battye W.H.,et al. Impact of lockdown during the COVID-19 outbreak on multi-scale air quality[J],2021,254. |
| APA | Bray C.D.,Nahas A.,Battye W.H.,&Aneja V.P..(2021).Impact of lockdown during the COVID-19 outbreak on multi-scale air quality.ATMOSPHERIC ENVIRONMENT,254. |
| MLA | Bray C.D.,et al."Impact of lockdown during the COVID-19 outbreak on multi-scale air quality".ATMOSPHERIC ENVIRONMENT 254(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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