OVERVIEW OF TROPOSPHERIC NO<sub>2</sub> USING THE OZONE MONITORING OBSERVATIONS INSTRUMENT AND HUMAN PERCEPTION ABOUT AIR QUALITY FOR THE MOST POLLUTING COUNTRIES ACCROSS THE WORLD, Carpathian Journal of Earth and Environmental Sciences, August 2019, Vol. 14, No. 2, p. 423 - 430; DOI:10.26471/cjees/2019/014/091 - Carpathian Journal of Earth And Environmental Sciences

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Adrian ROȘU*, Bogdan ROŞU¹, Daniel-Eduard CONSTANTIN¹, Maxim ARSENI¹, Mirela VOICULESCU¹, Lucian Puiu GEORGESCU¹, Gabriel MURARIU¹ & Ionel POPA²

¹Faculty of Science and Environment, European Center of Excellence for the Environment, “Dunarea de Jos” University of Galati, 111, Domneasca Street, RO-800201, Galati, Romania

²National Institute of Research and Development in Forestry ”Marin Drăcea” – Campulung Moldovenesc. Calea Bucovinei Street, no. 73 bis, 725100, Suceava, Romania

*Corresponding author: rosu_adrian_90@yahoo.ro

OVERVIEW OF TROPOSPHERIC NO₂ USING THE OZONE MONITORING OBSERVATIONS INSTRUMENT AND HUMAN PERCEPTION ABOUT AIR QUALITY FOR THE MOST POLLUTING COUNTRIES ACCROSS THE WORLD, Carpathian Journal of Earth and Environmental Sciences, August 2019, Vol. 14, No. 2, p. 423 - 430; DOI:10.26471/cjees/2019/014/091

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In this study, we present the assessment of air pollution for the period 2007 – 2017 for the first five most polluting countries from each continent according to World Health Organization (WHO) and NUMBEO databases. Spatial variation of NO₂ in each studied region is analyzed. Concurrent measurements of the NO₂ pollution come from long-term satellite observations using the spaceborne instrument Ozone Monitoring Instrument (OMI). The satellite OMI instrument performs daily global measurements of NO2 using nadir Differential Optical Absorption Spectroscopy (DOAS) observations at a spatial resolution of 13x24 km². Nitrogen dioxide data was extracted from OMI observations using Geospatial Interactive Online Visualization and ANalysis Infrastructure (GIOVANNI v4.24). The space observations represent the 30% cloud screened tropospheric vertical column densities of NO₂ integrated over a surface of a binned pixel of 25x25 km².