Biblioteca Digital de VanguardiaTHE ATMOSPHERIC DYNAMICS IN THE SOUTH CENTRAL BRAZIL IN THE SUMMER AND THE INFLUENCE OF THE EL NINO SOUTHERN OSCILLATION (ENSO)
The atmospheric dynamics of the Central Southern Brazil was studied by means of four weather stations situated in the area of Campo Mourao, PR, Caceres, MT, Brasilia, DF and Caparaó MG in three summers. The summer is characterized by abundant convective rains, mainly in the north of the Tropic of Ca...
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| Formato: | info:eu-repo/semantics/article |
| Lenguaje: | Portugués |
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Universidade de São Paulo. Faculdade de Filosofia, Letras e Ciências Humanas
2011
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| Acceso en línea: | https://www.revistas.usp.br/rdg/article/view/47223 http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/41856 |
| _version_ | 1782334093269139456 |
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| author | Borsato, Victor da Assunção |
| author_facet | Borsato, Victor da Assunção |
| author_sort | Borsato, Victor da Assunção |
| collection | Repositorio |
| description | The atmospheric dynamics of the Central Southern Brazil was studied by means of four weather stations situated in the area of Campo Mourao, PR, Caceres, MT, Brasilia, DF and Caparaó MG in three summers. The summer is characterized by abundant convective rains, mainly in the north of the Tropic of Capricorn. In southern Brazil the interannual variability is increased in years of El Nino and La Nina, and on the region lying north of the tropics there is no accurate information. To investigate the dynamics of air masses that were active in the South-Center of Brazil and the genesis of the rain, weather systems were studied by means of the spatial- temporal patterns. The main aim was to determine the percentage of frontal and convective rainfall and account for the involvement of the air masses in the atmospheric dynamics in the summer, in a climatologic normal year (2008/2009), in a year with the manifestation of the La Nina (2007/2008) and in a year with El Nino (2009/2010). In Caceres and in Brasilia the time of action of the Polar Atlantic mass is limited to sporadic events, while the continental Equatorial mass increases at the same rate. The main consequence of this is the convective rainfall. It was also found that for Campo Mourao and Caparaó the frontal systems, the Polar Atlantic and the Atlantic Tropical masses contributed actively to the types of weather. Although there are few researches regarding this theme, in this study it was found that in the summer of 2007/2008, of La Nina event, the rainfall was higher. |
| format | info:eu-repo/semantics/article |
| id | clacso-CLACSO41856 |
| institution | CLACSO, Repositorio Digital |
| language | Portugués |
| publishDate | 2011 |
| publisher | Universidade de São Paulo. Faculdade de Filosofia, Letras e Ciências Humanas |
| record_format | greenstone |
| spelling | clacso-CLACSO418562022-03-17T15:13:45Z THE ATMOSPHERIC DYNAMICS IN THE SOUTH CENTRAL BRAZIL IN THE SUMMER AND THE INFLUENCE OF THE EL NINO SOUTHERN OSCILLATION (ENSO) A DINÂMICA ATMOSFÉRICA NO CENTRO-SUL DO BRASIL NO VERÃO E AS INFLUENCIAS DO EL NIÑO OSCILAÇÃO SUL (ENOS) Borsato, Victor da Assunção Climatology Weather systems rainfall sistemas atmosféricos análise rítmica pluviosidade The atmospheric dynamics of the Central Southern Brazil was studied by means of four weather stations situated in the area of Campo Mourao, PR, Caceres, MT, Brasilia, DF and Caparaó MG in three summers. The summer is characterized by abundant convective rains, mainly in the north of the Tropic of Capricorn. In southern Brazil the interannual variability is increased in years of El Nino and La Nina, and on the region lying north of the tropics there is no accurate information. To investigate the dynamics of air masses that were active in the South-Center of Brazil and the genesis of the rain, weather systems were studied by means of the spatial- temporal patterns. The main aim was to determine the percentage of frontal and convective rainfall and account for the involvement of the air masses in the atmospheric dynamics in the summer, in a climatologic normal year (2008/2009), in a year with the manifestation of the La Nina (2007/2008) and in a year with El Nino (2009/2010). In Caceres and in Brasilia the time of action of the Polar Atlantic mass is limited to sporadic events, while the continental Equatorial mass increases at the same rate. The main consequence of this is the convective rainfall. It was also found that for Campo Mourao and Caparaó the frontal systems, the Polar Atlantic and the Atlantic Tropical masses contributed actively to the types of weather. Although there are few researches regarding this theme, in this study it was found that in the summer of 2007/2008, of La Nina event, the rainfall was higher. Estudou-se a dinâmica atmosférica do Centro-Sul do Brasil a partir de quatro estações climatológicas circunscritas na região a partir de Campo Mourão, PR, Cáceres, MT, Brasília, DF, e Caparaó, MG, na estação do verão em 2007/2008, 2008/2009 e 2009/2010, estação que se destaca pelas abundantes chuvas convectivas, principalmente na região ao norte da linha do trópico de Capricórnio. No Sul do Brasil a variabilidade interanual se amplia em anos de El Niño e de La Niña, e sobre a região situada ao norte do trópico não há informações precisas. Para investigar a dinâmica das massas de ar que atuaram no Centro-Sul do Brasil foram estudados os sistemas atmosféricos através da espacialização temporal. O objetivo principal foi contabilizar a participação das massas de ar na dinâmica atmosférica na estação do verão em um ano climatológico normal (2008/2009) em um de manifestação da La Niña (2007/2008) e em um de El Niño (2009/2010). Em Cáceres e Brasília o tempo de atuação da massa Polar atlântica se limita a eventos esporádicos, enquanto a massa Equatorial continental aumenta na mesma proporção. Constatou-se também que para Campo Mourão e Caparaó a massa Polar atlântica e a Tropical atlântica participaram ativamente nos tipos de tempo, e ainda, que a La Niña e o El Niño não proporcionaram aumento ou diminuição na participação de qualquer sistema capaz de alterar o volume das chuvas. 2011-11-20 2022-03-17T15:13:45Z 2022-03-17T15:13:45Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.revistas.usp.br/rdg/article/view/47223 10.7154/RDG.2011.0022.0007 http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/41856 por https://www.revistas.usp.br/rdg/article/view/47223/50959 Copyright (c) 2011 Victor da Assunção Borsato application/pdf Universidade de São Paulo. Faculdade de Filosofia, Letras e Ciências Humanas Revista do Departamento de Geografia; ##issue.vol## 22 (2011); 135-157 Revista do Departamento de Geografia; v. 22 (2011); 135-157 Revista do Departamento de Geografia; Vol. 22 (2011); 135-157 2236-2878 0102-4582 |
| spellingShingle | Climatology Weather systems rainfall sistemas atmosféricos análise rítmica pluviosidade Borsato, Victor da Assunção THE ATMOSPHERIC DYNAMICS IN THE SOUTH CENTRAL BRAZIL IN THE SUMMER AND THE INFLUENCE OF THE EL NINO SOUTHERN OSCILLATION (ENSO) |
| title | THE ATMOSPHERIC DYNAMICS IN THE SOUTH CENTRAL BRAZIL IN THE SUMMER AND THE INFLUENCE OF THE EL NINO SOUTHERN OSCILLATION (ENSO) |
| title_full | THE ATMOSPHERIC DYNAMICS IN THE SOUTH CENTRAL BRAZIL IN THE SUMMER AND THE INFLUENCE OF THE EL NINO SOUTHERN OSCILLATION (ENSO) |
| title_fullStr | THE ATMOSPHERIC DYNAMICS IN THE SOUTH CENTRAL BRAZIL IN THE SUMMER AND THE INFLUENCE OF THE EL NINO SOUTHERN OSCILLATION (ENSO) |
| title_full_unstemmed | THE ATMOSPHERIC DYNAMICS IN THE SOUTH CENTRAL BRAZIL IN THE SUMMER AND THE INFLUENCE OF THE EL NINO SOUTHERN OSCILLATION (ENSO) |
| title_short | THE ATMOSPHERIC DYNAMICS IN THE SOUTH CENTRAL BRAZIL IN THE SUMMER AND THE INFLUENCE OF THE EL NINO SOUTHERN OSCILLATION (ENSO) |
| title_sort | atmospheric dynamics in the south central brazil in the summer and the influence of the el nino southern oscillation (enso) |
| topic | Climatology Weather systems rainfall sistemas atmosféricos análise rítmica pluviosidade |
| url | https://www.revistas.usp.br/rdg/article/view/47223 http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/41856 |