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Communication Dans Un Congrès Année : 2009

Recent studies on UV radiation in Brazil

Résumé

This presentation shows a summary of UV index measurements performed in the last years in Southeastern (SE) and Northeastern (NE) Brazilian regions. Brazil has an area of 8.5 million km2 distributed between latitudes 5Ë N and 35Ë S and longitudes 5Ë W and 75Ë W. SE is the most important economic pole of South America and the NE coast is an important tourist region. This large area has a great diversity of climatic, atmospheric and geographical conditions in addition to very diverse social and cultural habits. Non-melanoma skin cancer (NMSC) is an epidemiological health problem with more than 120,000 new cases each year. The most of these cases are found in the South and Southeast regions, with about 70 new NMSC per 100,000 inhabitants. Solar Light UV501 biometers are installed in the SE cities of São Paulo (23.6Ë S, 46.7Ë W, 865 m ASL), Itajubá/Minas Gerais (22.4Ë S; 45.5Ë W, 846 m ASL) and the NE city of Ilhéus/Bahia (14.8Ë S; 39.3Ë W; 54 m ASL). First measurements began in 2005 in São Paulo city, while Itajubá and Ilhéus have regular measurements from the beginning of 2008. Other studies related to the UV radiation modeling and interactions with atmosphere components, as ozone, aerosols and clouds, have also been performed. For example: a) UVI modelling calculations performed by a multiple-scattering spectral models; b) studies on the aerosol radiative properties based on satellite (MODIS/Terra-Aqua) and ground-based (Aeronet) observation; c) ozone content variability from satellite (OMI/Aura) and ground-based (Microtops ozonometer) measurements; d) behavioral profile of the population, as regarding habits of solar exposure and sun protection measures.
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Dates et versions

hal-04113670 , version 1 (01-06-2023)

Identifiants

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Marcelo de Paula Correa, J. C. Ceballos, A. Moregula, E. Okuno, A. Fausto, et al.. Recent studies on UV radiation in Brazil. EGU General Assembly 2009, Apr 2009, Vienna (Austria), Austria. pp.GU2009-9522-1. ⟨hal-04113670⟩
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