Variabilidade espaço-temporal da coluna total de ozônio e sua relação com a radiação ultravioleta na América do Sul

Abstract

O ozônio (O3) representa menos de 1% dos gases da atmosfera terrestre, entretanto, é indispensável para a vida na Terra, devido sua influência no balanço energético do planeta filtrando a Radiação Ultravioleta (RUV) do tipo UV-B, nociva à saúde. O objetivo geral deste trabalho é investigar o impacto da coluna total de ozônio sobre a variabilidade da RUV na América do Sul, utilizando dados diários de RUV e Coluna Total de Ozônio (CTO) do sensor Ozone Monitoring Instrument (OMI) da Aura/NASA (National Aeronautics and Space Administration). Na análise mensal, o valor médio da coluna total de ozônio para o decênio de 2005 a 2014 apresentou uma maior variabilidade no trimestre SON na região da América do Sul. A Análise de Componentes Principais mostrou que nos meses JJA e SON apresenta-se uma correlação direta entre CTO e RUV. As análises dos casos estudados comprovaram que apenas os baixos níveis de ozônio não são determinantes para os altos valores de RUV. Os meses entre julho e outubro apresentam grandes áreas no da América do Sul com forte correlação inversa apresentando regiões estatisticamente significantes. Os resultados exprimem a relação entre a CTO e RUV que dependente da sazonalidade nas diferentes regiões, entre outros fatores. Spatio-temporal variability of total ozone column and ultraviolet radiation: assessment of relationship in South America A B S T R A C T Ozone (O3) represents less than 1% of the earth's atmosphere gases, however, it is indispensable for life on Earth, due to its influence on the planet's energy balance as well as filtering out harmful UV-B type UVR-B the health. The general objective of this work is to investigate the impact of the total ozone column on UVR variability in South America, using daily Aura/NASA Ozone Monitoring Instrument (OMI) sensor and Total Column Ozone (TOC) data daily. National Aeronautics and Space Administration). In the monthly analysis, the average value of the total ozone column for the decade from 2005 to 2014 showed a greater variability in the SON quarter in the South American region. The Analisys Principals Components pattern showed that in the JJA and SON months, there is a direct correlation between TOC and RUV. Analyzes of the case studies have shown that only low ozone levels are not determinant for high UVR values. The months between July and October present large areas in southern South America with strong inverse correlation showing statistically significant regions. The results express that the relationship between TOC and UVR depends on seasonality and different regions, among other factors. Keywords: Solar Radiation, OMI Sensor, Daily Erythmic Dose

Impacts of the antartic ozone hole influence events over southern Brazil in October 2015

“…Dias Nunes et al (2020), analyzed the impact of ozone content on UVR variability in South America between 2005 and 2014. This analysis proved that only low ozone levels are not determinant for high UVR values.…”

A comparative assessment of air quality spatial distribution in Alagoas and Asia

“…(2013) and Nunes et al (2020), this research study broadens the horizon of the air quality scrutiny in Alagoas by integrating a more extensive array of pollutants and implementing a spatial examination throughout the entire state. While Mollmann Junior et al (2013) concentrated on the dispersion of carbon monoxide emanating from sugarcane burning, and Nunes et al (2013) probed into the spatial-temporal variability of ozone and its correlation with ultraviolet radiation, this research explores and enriches these viewpoints by presenting an all-encompassing perspective on multiple pollutants and their dispersion over a spatial distribution map for the state.…”

“…The employment of satellite and reanalysis data for environmental surveillance offers intricate insights into air pollutants' dispersion and concentration levels (García-Burgos et al, 2022;Abecasis et al, 2022). In the past, a few studies on the air pollution were carried out in the State of Alagoas, in the Eastern Northeast of Brazil (ENEB), for instance Mollmann Junior et al (2013) and Nunes et al (2020). However, these studies were limited in their spatial approach and confined to a single pollutant.…”