Análise Quantitativa e Qualitativa Horária de dados do Radar, TRMM e Estações Meteorológicas na região Amazônica (Quantitative and Qualitative Analysis Hourly Data Radar, TRMM and Weather Stations in the Amazon Region)
DOI:
https://doi.org/10.26848/rbgf.v06.1.p110-117Keywords:
Palavras chave, Precipitação, Radar meteorológico, TRMM.Abstract
Este trabalho apresenta uma comparação entre os totais horários e mensais de precipitação observada, estimada por radar e TRMM (Tropical Rainfall Measuring Mission) para as cidades de Santarém, Pará (-2º 26’ 35’’ S e -54º 42’ 30’’ W) e Macapá, Amapá (00º 02’ 20’’ N e -51º 03’ 59’’ W). Para a análise dos produtos gerados por radar foi utilizado linguagem Fortran para a conversão em arquivos binários e depois submetidos a relação de Z-R para precipitação convectiva e em seguida confrontados com os registros de precipitação obtidos pelo sensor do Tropical Rainfall Measuring Mission (TRMM) e estações de superfície. Foi estudado o padrão da precipitação nos horários de atividade convectiva mais intensa na região amazônica e o seu comportamento no acumulado mensal compreendendo o período chuvoso e seco. Os instrumentos obtiveram registro da precipitação de forma parecida, onde os máximos e mínimos tiveram a mesma localização espacial, porém houve superestimativas por parte do radar e subestimativas da precipitação por parte do TRMM. Abstract This paper presents a comparison between the total hourly and monthly observed precipitation estimated by radar and Tropical Rainfall Measuring Mission (TRMM) to the city of Santarém, Pará (-2º26'35''S and 54°42'30''W) and Macapá, Amapá (00º02'20''N and -51°03'59''W). For the analysis of the products generated by radar was used Fortran for conversion to binary and then subjected to ZR relationship for convective rainfall, and then faced with the precipitation records obtained by the sensor of the TRMM and stations surface. The rainfall pattern (PRP) at times of intense convective activity over the Amazon region and its behavior in the monthly cumulative comprising the period rainy and dry were studied. The instruments recorded rainfall with similar results, where the maxima and minima have the same spatial location, but there was overestimation by the radar and underestimates the precipitation from the TRMM.Downloads
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Copyright (c) 2013 Giordani Rafael Sodré, Luciano Borges, Juarez Ventura, Francisco de Assis Cruz Melo
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