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| DOI | 10.1016/j.atmosenv.2020.117794 |
| The Effect of Corona Virus Lockdown on Air Pollution: Evidence from the City of Brescia in Lombardia Region (Italy) | |
| Cameletti M. | |
| 发表日期 | 2020 |
| ISSN | 1352-2310 |
| 卷号 | 239 |
| 英文摘要 | After the outbreak of Corona virus pandemic in Italy, the government has taken extraordinary measures, including a national lockdown, to prevent the spread of the infection. This extraordinary situation has led to a reduction in air pollution levels measured in the whole Po Valley, usually known as one of the most polluted areas in Europe in terms of particulate matter (PM) and nitrogen dioxide (NO2) concentrations. The main aim of this paper is to evaluate the effectiveness of the lockdown on the air quality improvement. In particular, an interrupted time series modelling approach is employed to test if a significant change in the level and the trend of the pollutant time series has occurred after the lockdown measure. The case study regards the city of Brescia (Northern Italy) and focuses on the comparison of the period before (January 1st–March 7th, 2020) and after (March 8th–March 27th, 2020) the lockdown. By adjusting for meteorology and Sunday effect, the results show that a significant change in air quality occurring in the post intervention period was observed only for a single NO2 station located in a heavy traffic zone. In particular, the estimate of the time series slope, i.e. the expected change in the concentration associated with a time unit increase, decreases from -0.25 to -1.67 after the lockdown. For the remaining stations, no significant change was found in the concentration time series when comparing the two periods. This confirms the complexity of air pollutant concentration dynamics for the considered area, which is not merely related to emission sources but depends also on other factors as, for example, (micro and macro) meteorological conditions and the chemical and physical processes in the atmosphere, which are all independent of the lockdown measure. © 2020 Elsevier Ltd |
| 关键词 | ARMAX modelChange in level and trendCounterfactualInterrupted time series regressionPM10 and NO2 concentrationsPo Valley |
| 语种 | 英语 |
| scopus关键词 | Air quality; Nitrogen oxides; Viruses; Air pollutant concentrations; Air quality improvement; Concentration-time; Meteorological condition; Nitrogen dioxides; Particulate Matter; Post interventions; Time-series modelling; Time series; nitrogen dioxide; air quality; atmospheric pollution; disease spread; infectious disease; nitrogen dioxide; particulate matter; spatiotemporal analysis; virus; air pollution; air quality; Article; combustion; comparative study; controlled study; Coronavirinae; human; particulate matter; physical phenomena; priority journal; time series analysis; traffic accident; wind speed; Brescia; Italy; Lombardy; Coronavirus |
| 来源期刊 | ATMOSPHERIC ENVIRONMENT
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/249011 |
| 作者单位 | Department of Management, Economics and Quantitative Methods, University of Bergamo, Italy |
| 推荐引用方式 GB/T 7714 | Cameletti M.. The Effect of Corona Virus Lockdown on Air Pollution: Evidence from the City of Brescia in Lombardia Region (Italy)[J],2020,239. |
| APA | Cameletti M..(2020).The Effect of Corona Virus Lockdown on Air Pollution: Evidence from the City of Brescia in Lombardia Region (Italy).ATMOSPHERIC ENVIRONMENT,239. |
| MLA | Cameletti M.."The Effect of Corona Virus Lockdown on Air Pollution: Evidence from the City of Brescia in Lombardia Region (Italy)".ATMOSPHERIC ENVIRONMENT 239(2020). |
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