Spatial-temporal variability of rainfall and mean air temperature for the state of Bahia, Brazil



Título del documento: Spatial-temporal variability of rainfall and mean air temperature for the state of Bahia, Brazil
Revue: Anais da Academia Brasileira de Ciencias
Base de datos: PERIÓDICA
Número de sistema: 000436252
ISSN: 0001-3765
Autores: 1
2
1
3
1
Instituciones: 1Universidade Estadual de Santa Cruz, Departamento de Ciencias Agrarias e Ambientais, Ilheus, Bahia. Brasil
2Universidade Federal do Espirito Santo, Departamento de Engenharia Rural, Alegre, Espirito Santo. Brasil
3Universidade de Sa Paulo, Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba, Sao Paulo. Brasil
Año:
Volumen: 92
Número: 1
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, descriptivo
Resumen en inglés The aim of this study was to evaluate spatial behavior and temporal stability of rainfall and mean air temperature in the state of Bahia, using historical series from 1975 to 2011 and 1961 to 2009, respectively. The analyses were performed considering the accumulated variables of each month of the historical series. The accumulated monthly totals were divided by the number of years of observation, obtaining the monthly average values of rainfall and air temperature for each measurement point. The data were submitted to descriptive statistical analysis and linear correlation studies. Geostatistical analysis was used to verify the existence and quantify spatial dependence between the values of the studied variables. In addition, the maps were submitted to algebra operations, calculating the spatial difference between months for each of the variables. For that purpose, the difference between one month and its subsequent period was calculated in order to establish the behavior of the variables over time. Climatic variables showed a close relationship between each other, demonstrating their spatial and temporal variation, which is mainly dependent on the seasons of the year. The rainfall and mean air temperature variables showed stable spatial behavior and high temporal stability between subsequent months
Disciplinas: Geociencias
Palabras clave: Ciencias de la atmósfera,
Variables climáticas,
Meteorología,
Geoestadística,
Precipitación,
Temperatura ambiental,
Variabilidad estacional,
Brasil
Keyword: Atmospheric sciences,
Climate variables,
Meteorology,
Geostatistics,
Rainfall,
Environmental temperature,
Seasonal variation,
Brazil
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