2010•Facta universitatis - series Architecture and Civil EngineeringOpen access

Comparison of some empirical equations for estimating daily reference evapotranspiration

Slaviša Trajković, Milan Gocić

Abstract

In this paper, results of certain empirical equations for estimating the daily reference evapotranspiration for the area of southern Italy have been given. Evaluation of the daily values of evapotranspiration of Policoro was conducted by the following equations: FAO-56Penman-Monteith (FAOPM), FAO-24 Penman (FAOPn), FAO-24 Blaney-Criddle (FAOBC), FAO-24 Radiation (FAOR), FAO-24 Pan, Priestley-Tailor (PT) and Hargreaves (HARG). The results strongly support the use of the FAO-24 pan and FAO-56 Penman-Monteith equations for the calculation of daily reference evapotranspiration at the location of Policoro.

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Key concepts: Evapotranspiration, Mathematics, Penman–Monteith equation, Environmental science, Hydrology (agriculture), Geology, Ecology, Geotechnical engineering