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- Title
PRECIPITATION EVALUATION BASED ON CHIRPS AND GPCC DATA WITH SURFACE MEASUREMENTS IN THE GUAMÁ RIVER SUB-BASIN IN NORTHEASTERN PARÁ, BRAZIL.
- Authors
DA COSTA BARBOSA, IVAN CARLOS; DA SILVA, EMERSON RENATO MACIEL; DA SILVA, HELDER JOSÉ FARIAS; DA SILVA COSTA, LUIZ GONZAGA; ISABEL VITORINO, MARIA; DE SOUSA, ADRIANO MARLISOM LEÃO
- Abstract
Rain is one of the most important variables in climate studies in te Amazon because of it is large variability in spatio-temporal scales. Many basins and sub-basins in the region are deficient in regular and uniform monitoring of data at the surface. Today, the remote sensing products available provide rainfall data for a large spatio-temporal distribution and for almost every place on the globe. This study evaluates the performance of rainfall data obtained from remote sensing for the sub-basin region of the Guamá River, northeastern Pará state, compared to data obtained from terrestrial rain gauges, as well as to identify the spatiotemporal behavior of rain in the area. The rainfall data used were measured by rain gauge ( Hidroweb ) and estimated by remote sensing, obtained from the high-resolution precipitation databases of the Global Precipitation Climatology Center (GPCC) and the Climate Hazards Group Infrared Precipitation with Stations (CHIRPS), for the period from 1988 to 2018. The data comparison showed remarkably high correlation (r = 0.99) and satisfactory agreement index (d = 0.98). The two estimated databases showed an approximate overestimation of the observed precipitation and a spatio-temporal distribution consistent with that expected for the region.
- Subjects
BELEM (Brazil); RAIN gauges; REMOTE sensing; CLIMATOLOGY; RAINFALL
- Publication
Revista Ciência e Natura, 2020, Vol 42, p1
- ISSN
0100-8307
- Publication type
Article