Data/hora: 13/06/2024 07:11:38

Provedor de dados: | 42
País: | Brazil
Título: | Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon
Autores: | SILVA JÚNIOR,RENATO O. DA; SOUZA,EVERALDO B. DE; TAVARES,ALEXANDRA L.; MOTA,JOSÉ A.; FERREIRA,DOUGLAS B.S.; SOUZA-FILHO,PEDRO W.M.; ROCHA,EDSON J.P. DA.
Data: | 2017-01-01
Ano: | 2017
Palavras-chave: | Calibration; Decades; Eastern Amazon; Evapotranspiration; Methods; Watershed.
Resumo: | ABSTRACT This study estimated the reference evapotranspiration rate (ETo) for the Itacaiúnas River Watershed (IRW), Eastern Amazonia, and measured the accuracy of eight empirical equations: Penman-Monteith (PM), Priestley-Taylor (PT), Hargreaves and Samani (HS), Camargo (CAM), Thornthwaite (TH), Hamon (HM), Kharrufa (KF) and Turc (TC) using monthly data from 1980 to 2013. In addition, it verifies the regional applicability to the IRW using a for the Marabá-PA station. The methods TC and PM (FAO56) presented the best results, which demonstrate that radiation and higher temperatures are the dominant drivers in the Evapotranspiration process, while relative humidity and wind speed have a much smaller impact. The temporal and spatial variability of ETo for IRW show has strong seasonality, increasing during the dry season and decreasing during the rainy season. The statistical analyses at 1% level of significance, indicates that there is no correlation of the residuals between the dry and rainy seasons, and test of the physical parameters such as mean temperature, solar radiation and relative air humidity explains the variations of ETo.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000501985
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201720170147
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.89 n.3 suppl.0 2017
Fonte: | info:eu-repo/semantics/openAccess