variabilidade espacial das precipitações pluviais diárias em uma estação experimental, em pindorama, sp spatial variability of daily rainfall in an experimental station in pindorama, state of são paulo

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ID: 133193
2005
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Abstract
Estudou-se a variabilidade espacial das chuvas diárias em uma escala reduzida em Pindorama, São Paulo, Brasil, utilizando dados que cobriram um período de 32 anos. Os dados históricos de cinco pluviômetros, cujas distâncias entre si variam de 257 a 3.900 metros, foram submetidos à análise de correlação para determinar a variabilidade espacial. À medida que a distância entre os pluviômetros aumentou, o coeficiente de correlação dos dados de chuvas por eles medidos diminuiu, revelando que a precipitação pluvial depende das posições onde se localizam os pluviômetros. As médias diárias mostraram que pluviômetros próximos, porém sob maiores variações de altitude, possuem diferenças superiores a pluviômetros mais distantes, mas sob altitudes similares. Quanto ao comprimento da série, evidenciou-se que, para o estudo, as séries deveriam possuir no mínimo sete anos.
Short distance spatial variability for rainfall data was studied for Pindorama, State of São Paulo, Brazil, using 32-years-long daily rainfall data. Thirty-two-years-long daily rainfall series for 5 rain gauges, for which the separation distances range from 257 to 3900 meters, where submitted to correlation analysis for the assessment of the spatial variability. It was concluded that as the distance between the rain gauges increases the correlation coefficient between them decreases, which indicates that the rainfall depends on the spatial location of the rain gauges. When daily data was analyzed, it was found that even for rain gauges located close together but with difference in altitude, the differences in rainfall between them is higher than when they are farther apart but in similar altitude. With respect to the length of the series, it was concluded that they should have at least seven years of data.
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bega2005bragantiavariabilidade Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Rodrigo Merighi Bega;Sidney Rosa Vieira;Isabella Clerici de Maria;Sonia Carmela Falci Dechen;Orlando Melo de Castro
Journal revista espanola de salud publica
Year 2005
DOI
10.1590/S0006-87052005000100016
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052005000100016
Keywords
time series spatial dependence

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