Analysis of evapotranspiration estimation by different models for Amparo de São Francisco – Sergipe

• Autor(a) principal: Fança, Manoel Vieira de
• Data de Publicação: 2021
• Outros Autores: Medeiros, Raimundo Mainar de, Holanda, Romildo Morant de, Saboya, Luciano Marcelo Fallé, Rolim Neto, Fernando Cartaxo, Araújo, Wagner Rodolfo de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Research, Society and Development
• Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/21505
• topic: Climatological data; Different ETo methods; irrigation management.; Climatological data; Different ETo methods; Irrigation management.; Dados climatológicos; Diferentes métodos ETo; Manejo de irrigação.; Dados climatológicos; Diferentes métodos ETo; Manejo de irrigação.; Datos climatológicos; datos climatológicos; Diferentes métodos ETo; manejo de riego.; Diferentes métodos ETo; Manejo de riego.

It is of fundamental importance to make the population aware of the use of water resources, increasingly exposing society that they depend on a period of regeneration and that irresponsible use causes water shortages. The objective is to evaluate and compare the performance of empirical methods for estimating evapotranspiration by the methods of Hargreaves, Hargreaves-Samani, Camargo and Thorntwaite with the standard method of Penman-Monteih, suggested by FAO-56, for Amparo de São Francisco – Sergipe. The rainfall data were from the period 1963-2020 and the thermal data were estimated by the software estima - T. The climatological data were estimated by the simplified interpolation method. With the results, it became clear that land use changes, such as agriculture, grazing and reforestation, cause changes in the water dynamics of a watershed. The Penman - Monteith method indicated by the FAO for the determination of ETp, present values ​​different from the real water conditions, at least in the studied area, overestimating the monthly ETp in all studied land uses. This behavior may be linked to solar radiation and temperature, which are the determining factors for the estimation of evapotranspiration by the Penman-Monteith method.