Nitrogen Dioxide (NO2) Pollution Monitoring with Sentinel-5P Satellite Imagery over Europe during the Coronavirus Pandemic Outbreak
Autor: | Robert Dobre, Constantin Nistor, Marina Vîrghileanu, Ionuț Săvulescu, Bogdan-Andrei Mihai |
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Rok vydání: | 2020 |
Předmět: |
Pollution
COVID-19 outbreak 010504 meteorology & atmospheric sciences media_common.quotation_subject Industrial production index Context (language use) 010501 environmental sciences NO2 01 natural sciences Environmental protection TROPOMI sensor air quality atmospheric pollution remote sensing data Satellite imagery lcsh:Science Air quality index Environmental quality 0105 earth and related environmental sciences media_common Pollutant Air traffic control General Earth and Planetary Sciences Environmental science lcsh:Q |
Zdroj: | Remote Sensing, Vol 12, Iss 3575, p 3575 (2020) Remote Sensing; Volume 12; Issue 21; Pages: 3575 |
ISSN: | 2072-4292 |
Popis: | 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. |
Databáze: | OpenAIRE |
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