INTERDECADAL AND SEASONAL ANALYSIS OF EXTRATROPICAL CYCLONES OVER SOUTHERN BRAZILIAN COAST FROM 1957-2010

Authors

  • Maurício Granzotto Mello Centro de Previsão do Tempo e Estudos Climáticos – Instituto Nacional de Pesquisas Espaciais, CPTEC/INPE; Cachoeira Paulista, SP
  • Michel Nobre Muza Curso Técnico de Meteorologia, Departamento Acadêmico de Saúde e Serviços, DASS/IFSC; Florianópolis, SC
  • Mário Francisco Leal Quadro Curso Técnico de Meteorologia, Departamento Acadêmico de Saúde e Serviços, DASS/IFSC; Florianópolis, SC

DOI:

https://doi.org/10.5902/2179460X16222

Keywords:

Ciclone extratropical, tempo de vida, análise, sazonal, interdecadal, Brasil.

Abstract

http://dx.doi.org/10.5902/2179460X16222

This work presents the occurrence and the lifetime of extratropical cyclones over the coast of Brazil, presenting a seasonal and interdecadal analysis. The data of extratropical cyclones events were obtained through a detection scheme for trajectory data from NCEP reanalysis-1. In the current work, was made a selection of cyclones with persistence equal or major than 24 hours, for the period 1957-2010, in an area correspondent to 15ºS to 45ºS latitude and 20ºW to 60ºW of longitude. The interdecadal and seasonal proposed comparative is based in recent research of interdecadal variability. During this 54 years period, winter was the season with most occurrence of cyclones, there was 822 events. However, analyzing the time series in distinct periods is possible identify the interdecadal and seasonal variability.

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Published

2015-03-07

How to Cite

Mello, M. G., Muza, M. N., & Quadro, M. F. L. (2015). INTERDECADAL AND SEASONAL ANALYSIS OF EXTRATROPICAL CYCLONES OVER SOUTHERN BRAZILIAN COAST FROM 1957-2010. Ciência E Natura, 37, 98–103. https://doi.org/10.5902/2179460X16222

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