Study of the maximum and minimum total columns of NO2 on the northeastern region of Brazil

Paulo Antunes Dias Pereira Calado, Glauber Lopes Mariano, Ericka Voss Chagas Mariano

Abstract


Nitrogen dioxide (NO2) is a gas emitted from anthropogenic sources directly into the atmosphere, with the most relevant being automotive vehicles. In this work were used the  softwares Erdas Imagine, GRADS and R with data obtained from the NASA Geovanni platform (available at http://giovanni.gsfc.nasa.gov/giovanni/) from the Ozone Monitoring Instrument (OMI) sensor located on the satellite AURA. In the data series, averages, minimum and maximum were used to observe and identify the areas with the highest concentration of NO2 in the Northeast region and the behavior of the pollutant on the same region. Among the maximum values identified in each of the months, nine occurred in Bahia including the maximum value of the whole series in July in the region near Roda Velha in Bahia and has a value of 4.88E+15 1/cm2, the state with the lowest occurrence of high concentration values is Rio Grande do Norte, but the lowest mean (2.06E+15 1/cm2) and the lowest value (1.75E+15 1/cm2) occur in the region near the city of São Luís (Maranhão) at 2.06E+15 1/cm2.

Keywords


Atmospheric pollution; Photochemical smog; Remote sensing

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DOI: https://doi.org/10.5902/2179460X30752

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