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Doctoral Thesis
DOI
https://doi.org/10.11606/T.18.2018.tde-22052018-174146
Document
Author
Full name
Gustavo Zen de Figueiredo Neves
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2018
Supervisor
Committee
Vecchia, Francisco Arthur da Silva (President)
Bourscheidt, Vandoir
Fischer, Evandro Gaiad
Mauad, Frederico Fabio
Venturi, Luis Antonio Bittar
Title in Portuguese
Distribuição geográfica das chuvas no Estado de Goiás e Distrito Federal: dinâmica e aplicações nos estudos rítmicos
Keywords in Portuguese
Centro-Oeste
Clima
Mudança
Precipitação
Variabilidade
Abstract in Portuguese
O objetivo deste trabalho foi de compreender a distribuição espaço-temporal das chuvas no Estado de Goiás e o Distrito Federal, e suas principais características quali-quantitativas no período de 1975 a 2015. A metodologia baseou-se no levantamento do referencial teórico-metodológico; obtenção dos dados; espacialização dos postos e de séries temporais consistentes; tratamento estatístico, análise da distribuição mensal da precipitação, dos eventos de extremos climáticos e a identificação de "anos-padrão". Elaborou-se a climatologia das frentes frias e a representação cartográfica da distribuição das chuvas anuais e sazonais na área de estudo. Os resultados observados apontam para uma variabilidade e irregularidade da distribuição das chuvas entre a região norte de Goiás e valores ligeiramente mais reduzidos no sentido sudoeste do Estado de Goiás. Os mecanismos de precipitação são impostos pela atuação dos sistemas atmosféricos intertropicais. Ressalta-se ainda interação do Planalto Central Brasileiro na participação das chuvas locais ocasionadas pelos efeitos termodinâmicos de superfície e dos aglomerados convectivos locais provocados pela Zona de Convergência do Atlântico Sul. Destacamse a importância na atualização do conhecimento climático do Estado de Goiás e Distrito Federal e as possibilidades que se ampliam para um futuro próximo.
Title in English
Geographic distribution of rains in the State of Goiás and Federal District: dynamics and applications in rhythmic studies
Keywords in English
Change
Climate
Midwest
Precipitation
Variability
Abstract in English
The objective of this work was to understand the spatial-temporal distribution of rainfall in the State of Goiás and the Federal District, and its main qualitative and quantitative characteristics from 1975 to 2015. The methodology was based on the survey of the theoretical-methodological reference; obtainment the data; spatialization of stations and consistent time series; statistical treatment, analysis of the monthly distribution of precipitation, climatic extreme events and the identification of "standard years". The climatology of the cold fronts and the cartographic representation of the annual and seasonal rainfall distribution in the study area were elaborated. The observed results point to a variability and irregularity of the rainfall distribution between the northern region of Goiás and slightly lower values in the southwest direction. Precipitation mechanisms are imposed by the performance of the atmospheric systems equatorials and intertropicals. It is also worth mentioning the interaction of the Brazilian Central Plateau in the participation of the local rains caused by the thermodynamic effects of the surface and of the local convective agglomerates caused by the Convergence Zone of the South Atlantic. The importance of updating the climatic knowledge of the State of Goiás and District and the possibilities that amplify for the near future.
 
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Publishing Date
2018-07-13
 
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