Produção Nacional
Revisado por pares
A Diagnosis of Rainfall over South America during the 1997/98 El Niño Event. Part I: Validation of NCEP–NCAR Reanalysis Rainfall Data
2002; American Meteorological Society; Volume: 15; Issue: 5 Linguagem: Inglês
10.1175/1520-0442(2002)015 2.0.co;2
ISSN1520-0442
AutoresV. Brahmananda Rao, Clóvis E. Santo, Sérgio H. Franchito,
Tópico(s)Precipitation Measurement and Analysis
ResumoA comparison between the National Centers for Environmental Predictions–National Center for Atmospheric Research (NCEP–NCAR) reanalysis rainfall data and the Agência Nacional de Energia Elétrica (ANEEL) rain gauge data over Brazil is made. It is found that over northeast Brazil, NCEP–NCAR rainfall is overestimated. But over south and southeast Brazil, the correlation between the two datasets is highly significant showing the utility of NCEP–NCAR rainfall data. Over other parts of Brazil the validity of NCEP–NCAR rainfall data is questionable. A detailed comparison between NCEP–NCAR rainfall data over northwest South America and rain gauge data showed that NCEP–NCAR rainfall data are useful despite important differences between the characteristics in the two data sources. NCEP–NCAR reanalysis data seem to have difficulty in correctly reproducing the strength and orientation of the South Atlantic convergence zone.
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