Evolution of SO₂ and NOx Emissions from Several Large Combustion Plants in Europe during 2005–2015

• Main Authors: Daniel-Eduard Constantin, Corina Bocăneala, Mirela Voiculescu, Adrian Roşu, Alexis Merlaud, Michel Van Roozendael, Puiu Lucian Georgescu
• Format: Article
• Language: English
• Published: MDPI AG 2020-05-01
• Series: International Journal of Environmental Research and Public Health
• Subjects: Large Combustion Plant (LCP); NOx; SO2; emissions; Ozone Monitoring Instrument
• Online Access: https://www.mdpi.com/1660-4601/17/10/3630
• ISSN: 1661-7827; 1660-4601

The aim of this paper is to investigate the evolution of SO₂ and NOx emissions of ten very large combustion plants (LCPs >500 MW) located in the European Union (EU) during 2005–2015. The evolution of NOx and SO₂ emissions were analyzed against the EU Directives in force during 2005–2015. The investigation was performed using space-borne observations and estimated emissions collected from the EEA (European Environment Agency) inventory of air pollutant emissions. The power plants were chosen according to their capacity and emissions, located in various parts of Europe, to give an overall picture of atmospheric pollution with NOx and SO₂ associated with the activity of very large LCPs in Europe. Satellite observations from OMI (Ozone Monitoring Instrument) are compared with calculated emissions in order to assess whether satellite observations can be used to monitor air quality, as a standard procedure, by governmental or nongovernmental institutions. Our results show that both space observations and estimated emissions of NOx and SO₂ atmospheric content have a descending trend until 2010, complying with the EU Directives. The financial and economic crisis during 2007–2009 played an important role in reducing emissions.