| Popis: |
O ozonio (O3) representa menos de 1% dos gases da atmosfera terrestre, entretanto, e indispensavel para a vida na Terra, devido sua influencia no balanco energetico do planeta filtrando a Radiacao Ultravioleta (RUV) do tipo UV-B, nociva a saude. O objetivo geral deste trabalho e investigar o impacto da coluna total de ozonio sobre a variabilidade da RUV na America do Sul, utilizando dados diarios de RUV e Coluna Total de Ozonio (CTO) do sensor Ozone Monitoring Instrument (OMI) da Aura/NASA (National Aeronautics and Space Administration). Na analise mensal, o valor medio da coluna total de ozonio para o decenio de 2005 a 2014 apresentou uma maior variabilidade no trimestre SON na regiao da America do Sul. A Analise de Componentes Principais mostrou que nos meses JJA e SON apresenta-se uma correlacao direta entre CTO e RUV. As analises dos casos estudados comprovaram que apenas os baixos niveis de ozonio nao sao determinantes para os altos valores de RUV. Os meses entre julho e outubro apresentam grandes areas no da America do Sul com forte correlacao inversa apresentando regioes estatisticamente significantes. Os resultados exprimem a relacao entre a CTO e RUV que dependente da sazonalidade nas diferentes regioes, 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 (O 3 ) 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 |
