NDLI: Nitrogen Dioxide $(NO_{2}$) Pollution Monitoring with Sentinel-5P Satellite Imagery over Europe during the Coronavirus Pandemic Outbreak

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Nitrogen Dioxide $(NO_{2}$) Pollution Monitoring with Sentinel-5P Satellite Imagery over Europe during the Coronavirus Pandemic Outbreak

Content Provider	MDPI
Author	Marina, Vîrghileanu Ionu, ț Săvulescu Mihai, Bogdan-Andrei Nistor, Constantin Dobre, Robert
Copyright Year	2020
Description	Nitrogen dioxide (NO2) is one of the main air quality pollutants of concern in many urban and industrial areas worldwide, and particularly in the European region, where in 2017 almost 20 countries exceeded the NO2 annual limit values imposed by the European Commission Directive 2008/50/EC (EEA, 2019). NO2 pollution monitoring and regulation is a necessary task to help decision makers to search for a sustainable solution for environmental quality and population health status improvement. In this study, we propose a comparative analysis of the tropospheric NO2 column spatial configuration over Europe between similar periods in 2019 and 2020, based on the ESA Copernicus Sentinel-5P products. The results highlight the NO2 pollution dynamics over the abrupt transition from a normal condition situation to the COVID-19 outbreak context, characterized by a short-time decrease of traffic intensities and industrial activities, revealing remarkable tropospheric NO2 column number density decreases even of 85% in some of the European big cities. The validation approach of the satellite-derived data, based on a cross-correlation analysis with independent data from ground-based observations, provided encouraging values of the correlation coefficients (R2), ranging between 0.5 and 0.75 in different locations. The remarkable decrease of NO2 pollution over Europe during the COVID-19 lockdown is highlighted by S-5P products and confirmed by the Industrial Production Index and air traffic volumes.
Starting Page	3575
e-ISSN	20724292
DOI	10.3390/rs12213575
Journal	Remote Sensing
Issue Number	21
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2020-10-31
Access Restriction	Open
Subject Keyword	Remote Sensing No2 Tropomi Sensor Air Quality Atmospheric Pollution Remote Sensing Data Covid-19 Outbreak
Content Type	Text
Resource Type	Article

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