Data/hora: 01/06/2024 00:52:49

Biblioteca(s): | Embrapa Cerrados.
Data corrente: | 13/02/2017
Data da última atualização: | 13/02/2017
Autoria: | GOTARGO, J. T.; RODRIGUES, L. N.; GOMES, B. M.
Afiliação: | Jackeline T. Gotardo, Universidade Estadual do Oeste do Paraná; LINEU NEIVA RODRIGUES, CPAC; Benedito M. Gomes, Universidade Estadual do Oeste do Paraná.
Título: | Comparison of methods for estimating reference evapotranspiration: an approach to the management of water resources within an experimental basin in the Brazilian Cerrado.
Ano de publicação: | 2016
Fonte/Imprenta: | Engenharia Agrícola, Jaboticabal, v. 36, n. 6, p. 1016-1026, nov./dez. 2016.
Idioma: | Português
Conteúdo: | ABSTRACT: This study aimed to compare methods for estimating reference evapotranspiration using an experimental basin in the Brazilian Cerrado, for water management purposes. For that, we estimated daily reference evapotranspiration over a certain period (time series between 1982 and 2012) through different empirical methods. These methods consisted of Blaney-Criddle (BC), Hargreaves & Samani (HS), ASCE Penman-Monteith (ASCE- PM), Penman (1948/1963) (PO), Priestley-Taylor (PT), which were all compared to the standard Penman-Monteith FAO-56 (PM-FAO56). Based on statistics, ASCE- PM, P and BC methods should be recommended for cerrado areas, either in rainy or dry seasons. After these, the PT also stood out. Among the less complex methods, based on temperature and energy data, PT method is recommended whether climatological data are scarce either in rainy or dry seasons. Yet, HS reached the greatest errors, a broad data spread and low estimate accuracy, but showing better performance in dry periods, thus remaining under restricted use.
Palavras-Chave: | Penman Monteith FAO 56; Recursos hídricos.
Thesagro: | Cerrado; Evapotranspiração; Método.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/155428/1/1809-4430-eagri-36-06-1016.pdf
Registro original: | Embrapa Cerrados (CPAC)
Exemplares: | CPAC - (35766-1) - UPC - AP - DD -  -  -  - DIS