Uv Extreme Events in Northeast of Brazil

Authors

  • Alexandre Boleira Lopo Universidade do Estado da Bahia
  • Maria Helena Constantino Spyrides Universidade Federal do Rio Grande do Norte UFRN-CCET
  • Paulo Sérgio Lucio Universidade Federal do Rio Grande do Norte UFRN-CCET
  • Sebastião Milton Pinheiro da Silva Departamento de Geografia, PPGe/UFRN

DOI:

https://doi.org/10.5902/2179460X12816

Keywords:

UV Index, ozone total column, cloud cover, Ozone Monitoring Instrument, 95th percentile.

Abstract

The main objective of this paper is to analyze extremes UV episodes in Northeast of Brazil (NEB), generally associated to cloud cover and levels of total ozone column (total ozone). The methodology consisted of the calculation of the 95th percentile to define the extreme value in the seasons of UV in city of Natal-RN (reference city) and analysis of NEB obtained from Ozone Monitoring Instrument (OMI) to UV index, total ozone and cloud cover in dates of extreme events in reference city. The results of UV index for Natal city indicated 14.4 for the extreme event in summer and images selected of OMI showed that extreme event were associated mainly with absence of cloudiness and levels below average annual of total ozone. Analysis of extreme episodes of UV index in NEB indicated that the extreme event occurred in reference city does not happen in the entire region, because of the large spatial variability of cloud cover and total ozone.

 

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Author Biographies

Alexandre Boleira Lopo, Universidade do Estado da Bahia

Doutor em Ciências Climáticas na UFRN-PPGCC. Mestre em Eng.Mecanica-UFRN. Membro do grupo de pesquisa do CNPq denominado Clima, ambiente, saúde e educação.

Maria Helena Constantino Spyrides, Universidade Federal do Rio Grande do Norte UFRN-CCET

Doutora e Mestre em Estatística. Professora do CCET/UFRN e do PPGCC-UFRN

Paulo Sérgio Lucio, Universidade Federal do Rio Grande do Norte UFRN-CCET

Doutor e Mestre em Estatística. Professor da UFRN e Coordenador do PPGCC-UFRN. Líder do grupo de pesquisa do CNPq denominado Clima, ambiente, saúde e educação

Sebastião Milton Pinheiro da Silva, Departamento de Geografia, PPGe/UFRN

Graduado em Geologia pela Universidade Federal de Pernambuco. Mestre em Sensoriamento Remoto e Aplicações pelo INPE. Doutorado em Geociências pela UNICAMP. É Professor Adjunto da UFRN.

Published

2014-11-14

How to Cite

Lopo, A. B., Spyrides, M. H. C., Lucio, P. S., & Silva, S. M. P. da. (2014). Uv Extreme Events in Northeast of Brazil. Ciência E Natura, 36(2), 482–490. https://doi.org/10.5902/2179460X12816

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