Impact of Covid-19 lockdown on air quality in the Poland, Eastern Europe.
Impact of Covid-19 lockdown on air quality in the Poland, Eastern Europe.
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DOI：
10.1016/j.envres.2020.110454
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发表时间：
2021-07
影响因子：
8.3
通讯作者：
Yan H
中科院分区：
文献类型：
--
作者：
Filonchyk M;Hurynovich V;Yan H
波兰首例新冠肺炎病例于2020年3月4日登记。政府措施严重限制了社会和经济活动。这项研究调查了政府为管理新冠肺炎而采取的预防措施对空气质量的影响。研究利用中分辨率成像光谱仪(MODIS)卫星获取的气溶胶光学厚度(AOD)和臭氧监测仪(OMI)观测的对流层柱NO2。从该国五个大城市的地面空气质量站反演的大气污染物(PM2.5、PM10、NO2和SO2)的浓度也被用于定量评估空气质量变化。地面和卫星数据显示，与2018年和2019年同期相比，封闭期内污染物有所减少。特别是，AOD数据显示，与2018年至2019年相比，4月和5月空气柱中的气溶胶浓度下降了约−23%和−18%。4月和5月的PM2.5收缩幅度最大，−分别下降11.1%至−26.4%，−由8.7下降至−21.1%。与2019年同期相比，PM10的降幅由−8.6%降至−33.9%，−由8.5%降至−31.5%。结果显示，为防止新冠肺炎传播而实施的限制措施显著改善了波兰的空气质量。
The first case of COVID-19 in Poland was registered on 4 March 2020. Governmental measures significantly restricted social and economic activities. This study investigates the impact on air quality resulting from the preventive measures taken by the government to manage Covid-19. The study was carried out with use of aerosol optical depth (AOD) retrieved from Moderate Resolution Imaging Spectrometer (MODIS) satellite and tropospheric column NO2 observed by Ozone Monitoring Instrument (OMI). Concentrations of atmospheric pollutants (PM2.5, PM10, NO2 and SO2) retrieved from ground-based air quality stations, located in five large cities of the country, were also used for quantitative assessment of air quality change. Ground-based and satellite data demonstrated the reduction of pollutants in the period of lockdown as compared to the same periods in 2018 and 2019. In particular, AOD data shows reductions of aerosol concentrations in the air column in April and May of approximately by −23% and −18% as compared to 2018–2019. The greatest contraction was for PM2.5 in April and May with reductions of −11.1% to −26.4% and from −8.7 to −21.1% respectively. For PM10, the reductions were from −8.6% to −33.9% and from −8.5% to −31.5% as compared to the same months in 2019. The results showed that restrictions imposed to prevent the spread of COVID-19 significantly improved Poland's air quality.
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影响因子：
8.3
作者：
Bontempi, E.
通讯作者：
Bontempi, E.
影响因子：
5
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