Avaliação do Efeito da Densidade do Pluviômetro na Fusão Radar-Rain Gauge

• Rafael Ignacio Navas Nuñez Departamento del Agua, Centro Universitario Regional Norte, Universidad de la Repúplica. Gral Rivera 1350, Salto, 50000, Uruguay https://orcid.org/0000-0001-8559-9523
• Pablo Andrés Gamazo-Rusnac Departamento del Agua, Centro Universitario Regional Norte, Universidad de la Repúplica. Gral Rivera 1350, Salto, 50000, Uruguay https://orcid.org/0000-0003-1991-3822
• Armando Alexis Borrero-Hernandez Departamento del Agua, Centro Universitario Regional Norte, Universidad de la Repúplica. Gral Rivera 1350, Salto, 50000, Uruguay https://orcid.org/0000-0003-0016-6214

DOI: https://doi.org/10.22209/rt.v45n3a02

Palavras-chave: densidade da rede pluviométrica, fusão radar-chuva, krigado com deriva externa

Resumo

Hidrometeorólogos há anos têm a necessidade de interpolar a precipitação registrada em estações pluviométricas, para descrever o campo de precipitação. O surgimento de novas tecnologias, como o radar meteorológico, deu lugar a técnicas alternativas de estimativa de precipitação, que se baseiam na fusão radar- pluviômetro. A krigagem de deriva externa é um método de fusão que captura as vantagens de ambos os sensores. Neste trabalho é explicado como a densidade da rede afeta a incerteza da fusão radar- pluviômetro. Adicionalmente, a krigagem ordinária foi utilizada como método de referência e é discutida a possibilidade de dispensar o pluviômetro quando na presença de radar meteorológico. A área de estudo localizava-se no sul da França, que possui 4 radares meteorológicos e mais de 200 estações pluviométricas. Os resultados deste trabalho sugerem que a aplicação da fusão radar- pluviômetro traz benefícios como estimativas menos tendenciosas e melhores correlacionadas, nas quais o pluviômetro continua a oferecer informações valiosas

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