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| Format: | Artículo científico |
| Sprache: | en |
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Academia Brasileira de Ciências
2017
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=32753602003 |
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| author | RENATO O. DA SILVA JÚNIOR |
| author_facet | RENATO O. DA SILVA JÚNIOR |
| contents | Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon RENATO O. DA SILVA JÚNIOR EVERALDO B. DE SOUZA ALEXANDRA L. TAVARES JOSÉ A. MOTA DOUGLAS B.S. FERREIRA PEDRO W.M. SOUZA-FILHO EDSON J.P. DA ROCHA Multidisciplinaria (Ciencias Naturales y Exactas) decades methods watershed Calibration eastern Amazon 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. 2017 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32753602003 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.89 |
| format | Artículo científico |
| id | redalyc_32753602003 |
| language | en |
| publishDate | 2017 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon RENATO O. DA SILVA JÚNIOR Multidisciplinaria (Ciencias Naturales y Exactas) decades methods watershed Calibration eastern Amazon Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon RENATO O. DA SILVA JÚNIOR EVERALDO B. DE SOUZA ALEXANDRA L. TAVARES JOSÉ A. MOTA DOUGLAS B.S. FERREIRA PEDRO W.M. SOUZA-FILHO EDSON J.P. DA ROCHA Multidisciplinaria (Ciencias Naturales y Exactas) decades methods watershed Calibration eastern Amazon 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. 2017 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32753602003 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.89 |
| title | Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) decades methods watershed Calibration eastern Amazon |
| url | https://www.redalyc.org/articulo.oa?id=32753602003 |