Spatial Intra-Annual Variability of Precipitation Based on Geostatistics. A Case Study for the Paraiba Do Sul Basin, Southeastern Brazil

Walquiria Marins Silva, Silvio Jorge C. Simões

Environmental Engineering Department, Institute of Science and Technology, Sao Paulo State University (UNESP), S?o José dos Campos, Brazil.

DOI: 10.4236/ijg.2014.54039                

Abstract

The emphasis in this research is to evaluate the spatial distribution of the precipitation using a geostatistics approach. Seasonal time scales records considering DJF, MAM, JJA e SON periods performed the analysis. Procedures to evaluate the variogram selection and to produce kriging maps were performed in a GIS environment . The results showed that kriging method was very suitable to detect both large changes in the whole area as those local small and subtle changes. Kriging demonstrated be a powerful statistical interpolation method that might be very useful in regions with great complexity in climatology and geomorphology.

Keywords

Spatial Rainfall, Semivariogram, Kriging, Hydroclimatologic Analysis

Conflicts of Interest

The authors declare no conflicts of interest.

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