COVID-19 Pandemic: Impacts on Air Quality during Partial Lockdown in the Metropolitan Area of Sao Paulo
文献类型：期刊论文
| 作者 | Alvim, Debora Souza5,6; Herdies, Dirceu Luis5,6; Correa, Sergio Machado3; Basso, Luana Santamaria5,6; Khalid, Bushra1,2; Silva, Gabriella Fernandes Prazeres9; Oyerinde, Gabriel8; de Carvalho, Nicolli Albuquerque7; da Costa Coelho, Simone Marilene Sievert5,6; Figueroa, Silvio Nilo5,6 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2023-03-01 |
| 卷号 | 15期号:5页码:1262 |
| 关键词 | atmospheric pollution COVID-19 pandemic MERRA-2 OMI metropolitan area of Sao Paulo lockdown |
| DOI | 10.3390/rs15051262 |
| 文献子类 | Article |
| 英文摘要 | Air pollution has become one of the factors that most affect the quality of life, human health, and the environment. Gaseous pollutants from motor vehicles have a significantly harmful effect on air quality in the Metropolitan Area of Sao Paulo (MASP)-Brazil. Motor vehicles emit large amounts of particulate matter (PM), carbon monoxide (CO), nitrogen oxides (NOx), and volatile organic compounds (VOCs), the last three acting as the main tropospheric ozone (O-3) precursors. In this study, we evaluated the effects of these pollutants on air quality in the MASP during the partial lockdown that was imposed to ensure the social distancing necessitated by the COVID-19 pandemic. We compared the monthly data for nitrogen dioxide (NO2) from the Ozone Monitoring Instrument (OMI) and CO, SO2, and BC from MERRA-2 for the period between April and May 2020 (during the pandemic) with the average for the same period for the (pre-pandemic) years 2017 to 2019 in the southeast region of Brazil. The meteorological and pollutant concentration data from the CETESB air quality monitoring stations for the MASP were compared with the diurnal cycle of three previous years, with regard to the monthly averages of April and May (2017, 2018, and 2019) and the same period in 2020, when the partial lockdown was first imposed in southeast Brazil. Our findings showed that there was a decrease in NO2 concentrations ranging from 10% to more than 60% in the MASP and the Metropolitan Area of Rio de Janeiro (MARJ), whereas in the Metropolitan Area of Belo Horizonte and Vitoria (MABH and MAV, respectively), there was a reduction of around 10%. In the case of the concentrations of CO and BC from MERRA-2, there was a considerable decrease (approx. 10%) during the period of partial lockdown caused by COVID-19 throughout almost the entire state of Sao Paulo, particularly in the region bordering the state of Rio de Janeiro. The concentration of SO2 from MERRA-2 was 5 to 10% lower in the MASP and MARJ and the west of the MABH, and there was a decrease of 30 to 50% on the border between the states of Sao Paulo and Rio de Janeiro, while in the MAV region, there was an increase in pollutant levels, as this region was not significantly affected by the COVID-19 pandemic. Sharp reductions in the average hourly concentrations of CO (38.8%), NO (44.9%), NO2 (38.7%), and PM2.5 (6%) were noted at the CETESB air quality monitoring stations in the MASP during the partial lockdown in 2020 compared with the hourly average rate in the pre-pandemic period. In contrast, there was an increase of approximately 16.0% in O-3 concentrations in urban areas that are seriously affected by vehicular emissions, which is probably related to a decrease in NOx. |
| WOS关键词 | OZONE FORMATION ; URBAN AREAS ; CHEMISTRY ; POLLUTION ; DIOXIDE ; VOCS |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS记录号 | WOS:000947950200001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200729]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Rio De Janeiro State Univ UERJ, Fac Technol, BR-237000 Resende, RJ, Brazil 3.Natl Inst Space Res INPE, Gen Coordinat Earth Sci CGCT, BR-12630000 Cachoeira Paulista, SP, Brazil 4.Fed Univ Alagoas UFAL, Environm Engn Dept, BR-57072900 Maceio, Alagoas, Brazil 5.Natl Inst Space Res INPE, Ctr Weather Forecasting & Climate Studies CPTEC, BR-12630000 Cachoeira Paulista, SP, Brazil 6.Univ Sao Paulo, Lorena Sch Engn EEL, BR-05508050 Lorena, SP, Brazil 7.Sheda Sci & Technol Complex, Phys Adv Res Ctr, Abuja 900103, Nigeria 8.Univ Fed Ouro Preto, Environm Engn Dept, BR-35402163 Ouro Preto, MG, Brazil 9.Int Islamic Univ, Dept Environm Sci, Islamabad 46300, Pakistan |
| 推荐引用方式 GB/T 7714 | Alvim, Debora Souza,Herdies, Dirceu Luis,Correa, Sergio Machado,et al. COVID-19 Pandemic: Impacts on Air Quality during Partial Lockdown in the Metropolitan Area of Sao Paulo[J]. REMOTE SENSING,2023,15(5):1262. |
| APA | Alvim, Debora Souza.,Herdies, Dirceu Luis.,Correa, Sergio Machado.,Basso, Luana Santamaria.,Khalid, Bushra.,...&Figueroa, Silvio Nilo.(2023).COVID-19 Pandemic: Impacts on Air Quality during Partial Lockdown in the Metropolitan Area of Sao Paulo.REMOTE SENSING,15(5),1262. |
| MLA | Alvim, Debora Souza,et al."COVID-19 Pandemic: Impacts on Air Quality during Partial Lockdown in the Metropolitan Area of Sao Paulo".REMOTE SENSING 15.5(2023):1262. |
入库方式： OAI收割
来源：地理科学与资源研究所
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