Espacialização da Precipitação Pluvial no Município de Piranhas, Alagoas
DOI:
https://doi.org/10.5902/2179460X12581Abstract
A precipitação pluvial é uma das principais variáveis meteorológicas, influenciando diretamente em diversos setores da sociedade. Dela depende toda a vida na terra. Porém, essa variável climática possui alta variabilidade tanto em quantidade como na distribuição em uma região. Assim, o presente estudo objetivou estimar a precipitação pluvial para todo o município de Piranhas, Alagoas. Foram utilizadas médias mensais de precipitação pluvial para o período de 1960 a 1990 das cidades de Água Branca, Delmiro Gouveia, Mata Grande, Pão de Açúcar e Piranhas. Esses dados foram aplicados a análises estatísticas, utilizando-se o método da regressão linear múltipla. Os dados foram interpolados através do método da Kriging. O Modelo Digital de Elevação (MDE) foi utilizado para caracterizar a altitude da região. Constatou-se que o modelo de regressão linear múltipla mostrou-se uma ferramenta eficaz para justificar a variabilidade espacial das precipitações na região de estudo. Climatologicamente, foi observado que 96,2% da precipitação pluvial anual estão relacionadas com a altitude. Apesar da variabilidade temporal provocado pelos fenômenos climáticos e meteorológicos, a altitude foi crucial para a variabilidade espacial da precipitação pluvial.
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