SciELO - Scientific Electronic Library Online

 
vol.28 número3Análise da velocidade do vento e altura de onda em incidentes de naufrágio na costa brasileira entre os estados do Sergipe e do Rio Grande do SulTendência das séries temporais de precipitação da região sul do Brasil índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Revista Brasileira de Meteorologia

versão impressa ISSN 0102-7786

Resumo

MOURA, Carlos Roberto Weide; ESCOBAR, Gustavo Carlos Juan  e  ANDRADE, Kelen Martins. Surface and altitude circulation patterns associated to intense rainfall events over the metropolitan region of Rio de Janeiro. Rev. bras. meteorol. [online]. 2013, vol.28, n.3, pp.267-280. ISSN 0102-7786.  https://doi.org/10.1590/S0102-77862013000300004.

In this study we performed a synoptic classification of a sea level pressure (SLP) sequence field and 500 hPa geopotencial heights associated with occurrence of intense precipitation in the city of Rio de Janeiro - RJ. The rotated "Principal Component Analysis" (PCA) was used in order to find the basic patterns of SLP sequence and 500 hPa geopotential heights. The outcomes show three dominant types of synoptic patterns that have caused intense rainfall events in the city of Rio de Janeiro along the period from 1997 to 2010, which explain approximately 56% of the total variance of the cases. The main pattern shows cold front passages of with predominantly zonal trajectory. The second pattern is related to the entry of classical cold fronts, accompanied by intense postfrontal anticyclones. At last, it was observed a pattern related to the positioning of an anticyclone to the East of Rio Grande do Sul State, producing winds from the south quadrant over the city of Rio de Janeiro.

Palavras-chave : synoptic classification; extreme events; principal components.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons